What Plants Give Us

The Hook (The Mystery & Discovery)

A. Imagine if you woke up in a world where your cotton clothes, your wooden pencils, your cricket bats, your sweet chocolate, and even the very air you breathe suddenly vanished! That is the great mystery of plants—the quiet, green biochemical factories of our planet. They perform the silent, constant scientific process of air purification by producing oxygen and taking in carbon dioxide to keep our atmosphere fresh and clean.

B. Did you know that some of the most powerful shields against deadly diseases are hidden inside the dry bark of trees? For centuries, humanity struggled against malaria, a devastating global fever, until explorers discovered that a natural chemical cure called quinine was locked inside the bark of the wild cinchona tree! At the same time, simple domestic herbs like basil (tulsi) protect us from colds and coughs, while mint calms our digestive systems.

C. Did you know that the fastest-growing plant on Earth is not actually a tree at all, but a giant grass? The bamboo plant is capable of growing an astonishing 91 cm within a single 24-hour period! From this rapid-growing grass, we engineer the very paper you write on, while we tap the liquid sap/juice of rubber trees to manufacture bouncy rubber and gather the sticky secretions of acacia trees to make gum.

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Real-World Lesson (Why This Matters)

This chapter is not just a list of plant parts; it is a blueprint for survival, industry, medicine, and global technology:

• Air Purification & Climate Regulation: In modern industrial societies, air pollution is an existential crisis. Plants serve as the primary natural air-purifiers on Earth, absorbing greenhouse gases like carbon dioxide and releasing vital oxygen. By doing so, they actively control air pollution, keep our immediate surroundings cool, and physically facilitate global water cycles to bring down rain.
• Pharmaceutical and Hygiene Industries: Many of the active ingredients in modern medicines and hygiene products originate directly from plants. The discovery of quinine from cinchona bark laid the groundwork for modern pharmacology to treat malaria. Daily consumer products like toothpastes and soaps rely on neem for its natural germ-killing properties, and mint is a staple for treating digestive ailments.
• Industrial Materials & Manufacturing: Sustainable forestry and manufacturing are driven by plant-based raw materials. Highly durable timbers like sal, sheesham, and teak provide the wood necessary for infrastructure, furniture, bats, and musical instruments. Furthermore, plant-based secretions like the sap of rubber trees and the gum of acacia trees provide the elastic materials and adhesives used across global logistics and packaging.
• Textiles and Fashion: The global clothing industry relies heavily on plant fibres. Cotton plants provide the soft fibres for everyday garments, jute plants supply durable fibres for sacks, curtains, and carpets, and coconut trees yield coarse coir fibres used for making heavy-duty ropes, mats, nets, and bags.
• Sustainable Agriculture: When plants die, they do not go to waste. They undergo natural decomposition over time, mixing with the soil to form organic manure. This manure acts as a natural, eco-friendly fertilizer in agriculture, which is vital for modern organic farming and preserving the chemical health of our soil.

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Activities

These activities bridge the gap between classroom theory and real-world experiential learning:

1. The School Herbal Garden Project (In-Book Activity): Establish a dedicated herbal garden patch in the school yard. Students will plant and take care of medicinal herbs such as basil (tulsi), mint, and neem. Students must observe growth rates and document their medicinal uses on chart paper displayed in the classroom.
2. The Parent-Student Winter Health Interview (In-Book Activity): During winter, students will interview their parents to ask why basil (tulsi) leaves are brewed into tea, especially when someone suffers from a cold or cough, and record other home remedies and health benefits of basil.
3. The “Underground Stem vs. True Root” Investigation (Out-of-Book Activity): Bring specimens of potatoes, ginger, carrots, and radishes to class. Guide students to examine their structures. Explain that despite growing underground, potatoes and ginger are stems (bearing nodes or “eyes”), while carrots and radishes are true roots.
4. Seed Crushing and Oil Extraction Demonstration (Out-of-Book Activity): Place a handful of groundnut seeds, sunflower seeds, or mustard seeds between two sheets of brown paper. Have students safely crush the seeds using a heavy object. Examine the paper for translucent grease stains to demonstrate how cooking oil is extracted by crushing seeds.
5. The Botanical Fibre Texture & Strength Matchup (Out-of-Book Activity): Provide raw samples of cotton, jute, and coir. Have students feel the textures (soft cotton vs. rough coir) and test their tensile strengths by hanging small weights from ropes made of each. Discuss how these physical properties dictate their uses (cotton for clothes, jute for carpets, coir for heavy-duty nets and ropes).
6. Decomposition & Manure-Making Observation Jar (Out-of-Book Activity): Fill a glass jar with soil, dry leaves, and small plant clippings. Keep the soil moist and observe it over several weeks. Watch how the dead plant matter slowly decomposes and blends into the soil, creating rich organic manure.
7. The Spice Aroma and Texture Mock Show (Out-of-Book Activity): Set up blindfolded smelling stations featuring chillies, cardamom, black pepper, turmeric, cloves, and cumin seeds. Students must identify the spices by aroma and texture alone and explain how they add flavor to food.
8. The Botanical Classification Challenge (Quick Check): Write the following 15 items on cards: Corn, Apple, Carrot, Broccoli, Brinjal, Sugarcane, Potato, Banana, Green pea, Rice, Ginger, Coffee, Cauliflower, Wheat, Coriander. Have students race to sort them into their correct botanical categories: Flower, Stem, Root, Seed, Leaf, or Fruit.

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Diagrams & Maps

These visual diagrams help students map out botanical structures and ecological cycles:

Diagram 1: The Edible Plant Parts Anatomy

• Description: A detailed illustration of a plant showing its various anatomical structures, with lines pointing to the specific edible components mentioned in the chapter.
• Labels:
  • Roots: Labelled with Turnip, Radish, Beetroot, and Carrot.
  • Stems: Labelled with Potato, Ginger (noting both grow underground), and Sugarcane.
  • Fruits: Labelled with Coconut, Mango, and Lemon (noted as the soft, fleshy parts).
  • Leaves: Labelled with Spinach, Mint, Coriander, and Young Tea Leaves.
  • Flowers: Labelled with Cauliflower and Broccoli.
  • Seeds: Labelled with Wheat, Corn, Rice, and Green Peas.

Diagram 2: The Photosynthesis and Climate Purification Cycle

• Description: A circular flow diagram representing how plants interact with the atmosphere to purify the air and influence weather.
• Labels:
  • Plant Intake: Arrows pointing into leaves labeled “Carbon Dioxide ($CO_2$) Absorption”.
  • Plant Output: Arrows pointing out of leaves labeled “Oxygen ($O_2$) Production”.
  • Surroundings: A temperature gauge labeled “Cooler Surroundings” and “Air Pollution Control”.
  • Skyward Cycle: Moisture rising from foliage toward a rain cloud, labeled “Rain Facilitation”.

Diagram 3: Industrial Secretions and Plant Processing Flowchart

• Description: A flowchart mapping raw, unrefined plant substances to their processed, everyday consumer products.
• Labels:
  • Bamboo Grass $\rightarrow$ Processing $\rightarrow$ Paper.
  • Rubber Tree Sap/Juice $\rightarrow$ Tapping $\rightarrow$ Rubber.
  • Acacia Tree Secretions $\rightarrow$ Extraction $\rightarrow$ Gum (Adhesive).
  • Cinchona Tree Bark $\rightarrow$ Extraction $\rightarrow$ Quinine (Malaria Medicine).
  • Cocoa Beans $\rightarrow$ Roasting/Processing $\rightarrow$ Chocolate.

Diagram 4: Natural Fibre Processing Pathways

• Description: A visual schematic dividing plant fibres into their botanical origins and final woven products.
• Labels:
  • Cotton Plant $\rightarrow$ Cotton Fibre $\rightarrow$ Clothes.
  • Jute Plant $\rightarrow$ Jute Fibre $\rightarrow$ Bags, Curtains, and Carpets.
  • Coconut Tree (Husk) $\rightarrow$ Coir Fibre $\rightarrow$ Ropes, Mats, Nets, and Bags.

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The Exhaustive Sequence / Process / Timeline

The following sequences map out the exact logical and biological processes detailed in the chapter:

1. Atmospheric Gas Exchange & Purification Process

[Industrial/Animal Emissions] ──> [Plants absorb Carbon Dioxide] ──> [Plants release Oxygen] ──> [Air becomes Fresh & Cool]
                                                                                                          │
                                                                                                          └──> [Controls Air Pollution]

(Reference:)

2. Decomposition & Soil Fertilization Cycle

[Dead Plants & Leaves] ──> [Decompose organically over time] ──> [Mix thoroughly with Soil] ──> [Form Manure (Natural Fertilizer)]

(Reference:)

3. Extreme Growth Botany (Bamboo Life Cycle)

[Bamboo Rhizome/Shoot] ──> [Rapid water/nutrient absorption] ──> [Fastest growth rate on Earth (up to 91 cm in 24 hours)]

(Reference:)

4. Seed Oil Extraction Process

[Harvest Seeds (Groundnut, Sunflower, Mustard)] ──> [Apply mechanical pressure (Crush hard)] ──> [Extract Oil] ──> [Cooking Food]

(Reference:)

5. Medicinal Extraction & Application Pathways

• Cinchona Pathway: [Cinchona Tree Bark] ──> [Extract Quinine chemical] ──> [Treat and cure Malaria infection]
• Basil (Tulsi) Pathway: [Basil / Tulsi Leaves] ──> [Brew/Consume as tea] ──> [Treat cold and cough symptoms]
• Mint Pathway: [Mint Leaves] ──> [Consume] ──> [Treat stomach ailments]
• Neem Pathway: [Neem Plant Extract] ──> [Blend into Soaps/Toothpastes] ──> [Kill germs and sanitize skin/teeth]

6. Industrial Fibre Manufacturing

• Cotton: [Cotton Plant] ──> [Harvest soft cotton fibres] ──> [Weave into Clothes]
• Jute: [Jute Plant] ──> [Harvest strong jute fibres] ──> [Manufacture Bags, Curtains, and Carpets]
• Coir: [Coconut Tree] ──> [Extract coarse coir from husk] ──> [Manufacture Ropes, Mats, Nets, and Bags]

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Comprehensive Vocabulary (The Word List)

• Edible – Something fit to be eaten – Used to describe parts of plants (roots, stems, leaves, flowers, fruits, and seeds) that humans can safely eat.
• Crush – To break something into small pieces by pressing hard – Used in the process of squeezing seeds like groundnut, sunflower, and mustard to extract cooking oil.
• Spices – Parts of plants used to add flavour to food – Refers to aromatic plant parts such as chillies, cardamom, black pepper, turmeric, cloves, and cumin seeds.
• Fibre – A thread-like material used to make clothes, etc. – Refers to raw textile materials like cotton, jute, and coir harvested from plants.
• Dyes – Substances used to colour things like cloth or hair – Refers to natural coloring agents like henna leaves.
• Environment – Surroundings in which a person, an animal or a plant lives – Refers to the physical surroundings that plants help clean and cool.
• Manure – Organic matter used as a fertiliser in agriculture – Formed when dead plants rot and mix with soil to make it fertile.
• Quinine – A specific medicine used for treating malaria – Extracted from the dry bark of cinchona trees.
• Cinchona – A medicinal tree – The bark of this tree is the source of the malaria-curing drug quinine.
• Basil (Tulsi) – A small, medicinal herb – Its leaves are used to treat cold and cough.
• Mint – A highly aromatic plant – Its leaves are eaten as food and used as a medicine to soothe stomach ailments.
• Neem – A medicinal tree – Used in soaps and toothpastes to kill harmful germs.
• Acacia – A genus of tree – The source of natural gum used as an adhesive.
• Bamboo – A giant, fast-growing grass – The main plant used to manufacture paper, capable of growing up to 91 cm in 24 hours.
• Sal – A strong timber tree – Used to harvest wood for making pencils, furniture, carts, and bats.
• Sheesham – A durable wood-yielding tree – Harvested for making furniture, carts, bats, and other wooden utilities.
• Teak – A premium timber-yielding tree – Used for creating high-quality wooden furniture and musical instruments.
• Coir – A coarse, strong fibre obtained from coconut trees – Used specifically to weave ropes, mats, nets, and bags.
• Decompose – To rot or break down organically over time – The process by which dead plant tissues turn into nutrient-rich soil manure.
• Oxygen – A gas produced during plant purification – Released by plants during gas exchange to refresh the atmosphere.
• Carbon Dioxide – A waste gas absorbed by plants – Taken in by plants to help purify the air and keep surroundings cool.

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Teacher’s Chapter Checklist

Teachers can use this checklist to track instructional targets and ensure 100% curriculum coverage:

• [ ] Explain the Air Purification Process (Oxygen production vs. Carbon Dioxide intake).
• [ ] Teach the definition of Edible plant parts.
• [ ] Detail Edible Roots with 4 exact examples (Turnip, Radish, Beetroot, Carrot).
• [ ] Detail Edible Stems with 3 exact examples (Potato, Ginger, Sugarcane).
• [ ] Clarify the Underground Stem concept (Potato and Ginger grow underground but are stems).
• [ ] Detail Edible Fruits with 3 exact examples (Coconut, Mango, Lemon) and explain that fruits are the soft and fleshy parts of plants.
• [ ] Detail Edible Leaves with 3 exact examples (Spinach, Mint, Coriander).
• [ ] Explain the origin of Tea (obtained from young tea leaves).
• [ ] Detail Edible Flowers with 2 exact examples (Cauliflower, Broccoli).
• [ ] Detail Edible Seeds with 4 exact examples (Wheat, Corn, Rice, Green peas).
• [ ] Explain Seed Oil Extraction and identify 3 oil seeds (Groundnut, Sunflower, Mustard).
• [ ] Define Spices and teach 6 exact examples (Chillies, Cardamom, Black pepper, Turmeric, Clove, Cumin seeds).
• [ ] Teach non-leaf/non-seed beverages and sweet treats:
  • [ ] Tea from young tea leaves.
  • [ ] Coffee from coffee beans.
  • [ ] Chocolate from cocoa beans.
  • [ ] Sugar from sugarcane plants (sweet in taste).
• [ ] Identify 4 Medicinal Plants and their exact uses:
  • [ ] Basil (Tulsi) leaves $\rightarrow$ Cold and cough.
  • [ ] Mint $\rightarrow$ Stomach ailments.
  • [ ] Cinchona bark $\rightarrow$ Quinine for malaria.
  • [ ] Neem $\rightarrow$ Germ killing, toothpastes, soaps.
• [ ] Teach Paper, Rubber, and Gum botanical sources:
  • [ ] Paper from Bamboo plants.
  • [ ] Rubber from Rubber tree juice.
  • [ ] Gum from Acacia trees.
• [ ] Identify 3 Wood Trees (Sal, Sheesham, Teak) and wood products (furniture, pencils, carts, bats, musical instruments).
• [ ] Define Fibres and teach their sources and exact products:
  • [ ] Cotton plant $\rightarrow$ Clothes.
  • [ ] Jute plant $\rightarrow$ Bags, curtains, carpets.
  • [ ] Coconut tree $\rightarrow$ Coir (ropes, mats, nets, bags).
• [ ] Teach Perfumes and Dyes:
  • [ ] Perfumes from Rose and Jasmine flowers.
  • [ ] Dyes from Henna leaves.
• [ ] Teach 5 Environmental Uses of plants:
  • [ ] Fresh air.
  • [ ] Cool surroundings.
  • [ ] Control air pollution.
  • [ ] Decomposition to form manure.
  • [ ] Help get rain.
• [ ] Teach the Bamboo Growth Fact: Giant grass, fastest growing, grows up to 91 cm in 24 hours.

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Ready-Reckoner Student Revision Notes

1. Introduction: The Green Purifiers

• Plants are incredibly useful organisms that sustain life on Earth.
• Air Purification: They take in carbon dioxide (a waste gas) and produce oxygen (the gas we breathe), making the air fresh and controlling air pollution.
• Weather and Soil: Plants keep our surroundings cool, help bring down rain, and decompose after death to form nutrient-rich manure.

2. Plants as Food (Edible Parts)

“Edible” means something is safe and fit to be eaten. Humans eat different parts of different plants:

A. Roots

• We eat the roots of some plants.
• Examples: Turnip, Radish, Beetroot, Carrot.

B. Stems

• We eat the stems of some plants.
• Underground Stems: Potato and ginger are stems that grow underground.
• Examples: Potato, Ginger, Sugarcane.

C. Leaves

• We eat the leaves of some plants.
• Examples: Spinach, Mint, Coriander.
• Tea Fact: Tea is made from young tea leaves.

D. Fruits

• A fruit is the soft and fleshy part of the plant.
• Examples: Coconut, Mango, Lemon.

E. Flowers

• We eat the blossoms/flowers of some plants.
• Examples: Cauliflower, Broccoli.

G. Seeds

• We eat the seeds of some plants.
• Examples: Wheat, Corn, Rice, Green peas.

3. Specialty Food & Beverage Products

• Cooking Oils: Obtained by crushing (pressing hard) seeds like groundnut, sunflower seeds, and mustard seeds.
• Spices: Parts of plants used to add flavour to our food. Examples include chillies, cardamom, black pepper, turmeric, clove, and cumin seeds.
• Beverages:
  • Tea comes from young tea leaves.
  • Coffee comes from coffee beans.
  • Chocolate comes from cocoa beans.
• Sweetener: Sugar is sweet in taste and comes from sugarcane plants.

4. Medicinal Plants

Plants are nature’s medicine chest. Specific plant parts heal specific ailments:

• Basil (Tulsi): Leaves are used to treat colds and coughs (especially during winter).
• Mint: Leaves/plants are used to treat stomach ailments.
• Cinchona: The dry bark of the cinchona tree yields quinine, a powerful medicine used to treat malaria.
• Neem: Used to make soaps and toothpastes because it helps in killing germs.

5. Industrial & Non-Food Uses of Plants

A. Paper, Rubber, and Gum

• Paper: Made from bamboo plants.
• Rubber: Made from the liquid juice of rubber trees.
• Gum: Made from acacia trees.

B. Wood and Timber

• Trees like sal, sheesham, and teak give us strong wood.
• Wood is processed to make furniture, pencils, carts, bats, and musical instruments.

C. Fibres

A fibre is a thin, thread-like material used to weave textiles and other goods:

• Cotton: Harvested from cotton plants; used to weave soft clothes.
• Jute: Harvested from jute plants; used to manufacture bags, curtains, and carpets.
• Coir: Extracted from coconut trees; coarse and strong, used to make ropes, mats, nets, and bags.

D. Perfumes and Dyes

• Perfumes: Extracted from highly aromatic flowers like rose and jasmine.
• Dyes: Natural coloring substances made from henna leaves.

6. Critical Botanical Fact File

• Bamboo is Grass: Bamboo is actually a giant grass, not a tree.
• Super Growth: Bamboo is the fastest-growing plant in the world, with certain species growing up to 91 cm within a single 24-hour period.
• Manure Formation: Dead plants decompose over time and mix with the soil to form organic manure, which makes the soil highly fertile for farming

QUESTIONS :

Master Question Bank: What Plants Give Us

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1. The “Hidden” In-Text Questions (Mid-Chapter Extraction)

Q1. Explain why potato and ginger are scientifically classified as stems even though they grow underground, and contrast them with roots.
Q2. Identify the exact botanical source and the specific plant part from which commercial black tea is obtained according to the chapter.
Q3. Describe the mechanical process required to extract cooking oil from plants and list three specific seeds mentioned in the text that undergo this process.
Q4. Define the term “spices” and explain how they differ conceptually from primary food items like wheat or rice.
Q5. In the text, beverages and sweet treats are derived from different plant parts. Explain the structural difference between the plant parts used to make coffee versus chocolate.
Q6. Detail the dual commercial application of the neem plant mentioned in the text and explain why it is included in these personal hygiene products.
Q7. Describe the botanical classification and unique growth characteristics of bamboo as detailed in the chapter’s “Fact Flash” box.
Q8. Explain the biological process of “decomposition” as described in the text, including what raw materials are involved and what final product is formed.
Q9. Identify the three distinct trees mentioned in the text that yield strong timber (wood) and list five consumer items manufactured from this wood.
Q10. Explain how the air purification process of plants functions as a balanced gas exchange cycle, specifying the exact inputs and outputs.

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2. The Textbook Exercise Integration (Back-of-Chapter)

Jump Start [Passage 1]

Q1. Write the names of plant products based on the picture clues:
(a) Stem: [Picture clue]
(b) Flower: [Picture clue]
(c) Root: [Picture clue]
(d) Fruit: [Picture clue]
(e) Leaves: [Picture clue]

Q2. Write the name of a plant from which we get paper.

Let’s Say (Give one word answer) [Passage 10-11]

Q1. Rubber is used to make
Q2. We get fibres from
Q3. Paper is made from

Let’s Write [Passage 11-13]

A. Tick (✓) the correct option.

Q1. Plants give out:
A) Nitrogen B) Oxygen C) Hydrogen D) Carbon dioxide

Q2. Acacia trees give us:
A) Perfumes B) Fibres C) Rubber D) Gum

Q3. Perfumes are obtained from:
A) Rose B) Mint C) Cinchona D) Neem

Q4. These are used for treating cold and cough.
A) Cinchona leaves B) Neem leaves C) Basil leaves D) Mango leaves

B. Fill in the blanks using the words from the help box [mint, flower, fruit, henna].

Q1. ______ is a soft and fleshy part of the plant.
Q2. ______ is used for treating stomach ailments.
Q3. Broccoli is the ______ of plant.
Q4. ______ leaves are used as a dye.

C. Write ‘T’ for true and ‘F’ for false statements.

Q1. Tea and coffee are beverages.
Q2. We get coir from jute plants.
Q3. Rose and jasmine flowers are used for making perfumes.
Q4. Trees also help us get rain.

D. Match the columns.

Q1. Match the Column A items with Column B:
Column A: Column B

1. Root Mango

2. Stem Turnip

3. Fruit Acacia tree

4. Gum Potato

E. Answer the following questions.

Q1. Name two plants that give us medicines. Name the medicine used for treating malaria, which we get from the bark of cinchona tree.
Q2. What are spices? Name two spices that are used in our kitchen.
Q3. How are plants useful to us? What is the use of neem leaves?
Q4. What are fibres? Name two plants that provide us fibre.

Mind Maze [HOTS] [Passage 13-14]

Q1. What might happen if plants are cut down excessively for their products?
Q2. How do plants help in purifying the air?

Learning Application (Picture-based Question) [Passage 14]

Q1. Identify the following plants and complete their product names:
(a) T_A
(b) T_RM_R_C
(c) CH__LL_
(d) M_STA_D

Life Skills [Passage 14]

Q1. Ask your parents why they use basil leaves in preparing tea, especially in winters, when you are suffering from cold or cough. Ask them about other benefits of basil leaves.

Project/Activity [Passage 14]

Q1. Create a herbal garden at school. Take proper care of the plants. Write the uses of the plants on a chart paper and display it in your classroom.

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3. Exhaustive Objective Bank (The Factual Baseline)

Multiple-Choice Questions (MCQs)

Q1. Which of the following gases do plants absorb from the atmosphere during the air purification process?
A) Oxygen B) Carbon dioxide C) Nitrogen D) Hydrogen

Q2. Turnip, radish, beetroot, and carrot are examples of which edible plant part?
A) Stems B) Roots C) Fruits D) Seeds

Q3. Which of the following edible plant parts grow underground but are botanically classified as stems?
A) Radish and carrot B) Potato and ginger C) Turnip and beetroot D) Spinach and coriander

Q4. What part of the plant is defined in the text as a “soft and fleshy part”?
A) Flower B) Stem C) Fruit D) Root

Q5. Coconut, mango, and lemon are studied in this chapter as examples of edible:
A) Seeds B) Leaves C) Flowers D) Fruits

Q6. spinach, mint, and coriander are consumed by humans as which part of the plant?
A) Roots B) Flowers C) Leaves D) Stems

Q7. According to the “Fact Flash” in the chapter, tea is obtained specifically from:
A) Crushed coffee beans B) Young tea leaves C) Roasted cocoa seeds D) Acacia tree sap

Q8. Cauliflower and broccoli represent which edible category of plant parts?
A) Flowers B) Seeds C) Stems D) Leaves

Q9. Wheat, corn, rice, and green peas are eaten as which part of the plant?
A) Fruits B) Roots C) Seeds D) Flowers

Q10. Cooking oils can be extracted by crushing the seeds of which group of plants?
A) Cinchona, neem, and basil B) Sal, sheesham, and teak C) Jute, coconut, and cotton D) Groundnut, sunflower, and mustard

Q11. Plant parts that are used specifically to add flavour to our food are defined as:
A) Fibres B) Spices C) Dyes D) Beverages

Q12. Which of the following sets of plant products contains only spices?
A) Wheat, corn, and rice B) Spinach, mint, and coriander C) Chillies, cardamom, and turmeric D) Turnip, radish, and beetroot

Q13. From which part of the plant do we obtain coffee?
A) Coffee seeds/beans B) Coffee leaves C) Coffee roots D) Coffee bark

Q14. We get chocolate from:
A) Sugarcane juice B) Cocoa beans C) Bamboo stalks D) Jasmine flowers

Q15. Which medicine used for treating malaria is obtained from the dry bark of the cinchona tree?
A) Neem B) Basil C) Quinine D) Mint

Q16. Which medicinal plant is used specifically for treating stomach ailments?
A) Basil (Tulsi) B) Mint C) Cinchona D) Neem

Q17. We get paper, rubber, and gum from which respective plant sources?
A) Rose, jasmine, and henna B) Sal, sheesham, and teak C) Jute, coconut, and cotton D) Bamboo, rubber tree, and acacia tree

Q18. Wood from sal, sheesham, and teak trees is used to manufacture which of the following?
A) Soaps, toothpastes, and perfumes B) Bags, carpets, and ropes C) Furniture, pencils, and musical instruments D) Dyes, medicines, and paper

Q19. Coir is a coarse and strong fibre obtained from which plant?
A) Cotton plant B) Jute plant C) Coconut tree D) Acacia tree

Q20. Which plant leaves are processed and used as a natural dye to colour hair or cloth?
A) Spinach leaves B) Henna leaves C) Basil leaves D) Mint leaves

Q21. Which botanical fact about bamboo is correct according to the text?
A) It is a slow-growing hardwood tree B) It is a giant grass that can grow up to 91 cm in 24 hours C) It is a medicinal flowering plant D) It is the primary source of commercial natural rubber

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Fill-in-the-Blanks

Q1. Plants purify the air by producing ______ and taking in carbon dioxide.
Q2. Turnip, radish, beetroot, and ______ are examples of edible roots.
Q3. Potato and ______ are stems that grow underground.
Q4. Fruit is a ______ and fleshy part of the plant.
Q5. Tea is obtained from ______ tea leaves.
Q6. Broccoli and ______ are examples of flowers that we eat as food.
Q7. Wheat, corn, rice, and ______ are edible seeds.
Q8. We get oil by ______ the seeds of groundnut, sunflower, and mustard.
Q9. Parts of some plants used to add flavour to our food are called ______.
Q10. Coffee is obtained from coffee ______.
Q11. Quinine, used to treat malaria, is obtained from the dry bark of ______ trees.
Q12. We get paper from ______ plants.
Q13. Gum is obtained from ______ trees.
Q14. Coir is a fibre obtained from ______ trees.
Q15. Dead plants decompose over time and mix with the soil to form ______.

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True/False Questions

Q1. Plants help control air pollution by producing carbon dioxide and taking in oxygen. (If False, correct the statement)
Q2. Turnips and carrots are examples of edible stems that grow underground. (If False, correct the statement)
Q3. Tea is obtained from young tea leaves, whereas coffee is obtained from coffee beans. (If False, correct the statement)
Q4. Sugar is sweet in taste and is obtained from beetroots. (If False, correct the statement)
Q5. Basil (Tulsi) leaves are used for treating stomach ailments. (If False, correct the statement)
Q6. Quinine is a medicine used for treating malaria, extracted from the bark of cinchona trees. (If False, correct the statement)
Q7. We get paper from rubber trees and rubber from bamboo plants. (If False, correct the statement)
Q8. Trees like sal, sheesham, and teak give us durable wood used for making furniture. (If False, correct the statement)
Q9. Coir is a coarse fibre obtained from jute plants. (If False, correct the statement)
Q10. Bamboo is actually a giant grass and is the fastest-growing plant on Earth. (If False, correct the statement)

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4. Subjective & Competency Bank (Higher-Order Thinking)

Short-Answer Questions

Q1. Explain how plants purify the air and why this is important for the environment.
Q2. Why are potatoes and ginger classified as stems rather than roots, despite growing underground?
Q3. Explain the method by which we get cooking oil from sunflower and mustard seeds.
Q4. Why are spices added to food, and what are three examples of spices mentioned in the text?
Q5. Explain how tea, coffee, and chocolate are obtained from different parts of their respective plants.
Q6. Why is neem used as an active ingredient in some commercial toothpastes and soaps?
Q7. How do dead plants and leaves help in making the soil fertile over time?
Q8. Explain the difference between cotton and jute in terms of their plant sources and primary uses.
Q9. Why does the chapter state that bamboo is highly unique, and how fast can certain species grow?
Q10. Explain how plants help in regulating local weather conditions and water cycles.

Scenario-Based / Competency Questions

Q1. Scenario: A farmer wants to make his crop soil fertile without using chemical fertilizers. How can he use his understanding of dead plants to achieve this?
Q2. Scenario: A person living in a swampy region contracts malaria. Based on the chapter, which specific tree should local healers search for to extract a remedy?
Q3. Scenario: A designer wants to manufacture heavy-duty, weather-resistant ropes and outdoor floor mats. Which plant fibre should they choose, and from which tree does it come?
Q4. Scenario: A student is given a tray containing a turnip, a potato, a ginger root, and a carrot, and is told to group them by botanical part. How should they sort them?
Q5. Scenario: A city is suffering from high levels of summer heat and heavy air pollution. How can an urban forestry initiative help solve both of these environmental issues?

Long-Answer / Essay Questions

Q1. Describe in detail the various edible parts of plants discussed in the chapter, providing at least two specific examples for each part.
Q2. Provide a comprehensive breakdown of the medicinal products we get from plants, detailing the source plant, the specific part used, and the ailment treated for each.
Q3. Explain how raw materials from plants support major manufacturing and textile industries, focusing on paper, rubber, gum, and different types of fibres.
Q4. Detail the complete relationship between plants and the environment, including air purification, temperature regulation, rain facilitation, and soil enrichment.
Q5. Analyze the commercial and domestic value of sheesham, sal, teak, rose, jasmine, and henna plants as detailed in the chapter.

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5. The Master Answer Key & Marking Rubric

1. The “Hidden” In-Text Questions (Mid-Chapter Extraction) Answer Key

• Q1 Answer: Potato and ginger are classified as stems because they possess structural features of stems (like nodes/buds), even though they develop underground. Roots do not have these stem structures and serve primarily for water absorption.
• Q2 Answer: Commercial black tea is obtained from young tea leaves.
• Q3 Answer: Oil is extracted by crushing (applying strong physical pressure to break into small pieces) the seeds. The three seeds are groundnut seeds, sunflower seeds, and mustard seeds.
• Q4 Answer: Spices are aromatic parts of certain plants used specifically to add flavour to our food, whereas primary food items like wheat or rice serve as the main nutritional bulk of the meal.
• Q5 Answer: Coffee is obtained from coffee beans (seeds), while chocolate is obtained from cocoa beans (seeds of the cocoa plant).
• Q6 Answer: Neem is used in toothpastes and soaps. It is added because it has natural properties that help in killing germs.
• Q7 Answer: Bamboo is classified as a giant grass and not a tree. It is the fastest-growing plant on Earth, capable of growing up to 91 cm within a 24-hour period.
• Q8 Answer: Decomposition is the process where dead plants rot over time and mix with the soil. The final product formed is organic manure, which fertilizes the soil.
• Q9 Answer: The three trees are sal, sheesham, and teak. The five consumer items are furniture, pencils, carts, bats, and musical instruments.
• Q10 Answer: Plants purify the air by taking in carbon dioxide (a waste gas) and producing/releasing oxygen (which animals and humans breathe), creating a balanced, clean atmosphere.

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2. Textbook Exercise Integration (Back-of-Chapter) Answer Key

Jump Start

• Q1: (a) Sugarcane / Potato / Ginger (b) Cauliflower / Broccoli (c) Turnip / Radish / Beetroot / Carrot (d) Coconut / Mango / Lemon (e) Spinach / Mint / Coriander.
• Q2: Bamboo plant.

Let’s Say (Give one word answer)

• Q1: Erasers / elastic bands / tyres (Text simply states: “Rubber is used to make…”)
• Q2: Plants (e.g., jute, coconut, cotton plants).
• Q3: Bamboo plants.

Let’s Write

• A. Tick (✓) the correct option:
  1. (b) Oxygen
  2. (d) Gum
  3. (a) Rose
  4. (c) Basil leaves
• B. Fill in the blanks:
  1. Fruit
  2. Mint
  3. flower
  4. Henna
• C. Write ‘T’ for true and ‘F’ for false:
  1. T
  2. F (We get coir from coconut trees, jute from jute plants)
  3. T
  4. T
• D. Match the columns:
  1. Root – (b) Turnip
  2. Stem – (d) Potato
  3. Fruit – (a) Mango
  4. Gum – (c) Acacia tree
• E. Answer the following questions:
  1. Two medicinal plants: Basil (Tulsi) and Mint (or Neem/Cinchona). Medicine for malaria: Quinine from cinchona bark.
  2. Spices: Parts of some plants used to add flavour to our food. Two kitchen examples: Chillies, cardamom (or black pepper, turmeric, clove, cumin seeds).
  3. Plants are useful because they provide food, medicines, rubber, gum, fibres, wood, fresh air, and cool surroundings. Neem leaves are used to kill germs and make soaps/toothpastes.
  4. Fibres: A thread-like material used to make clothes, bags, carpets, curtains, ropes, etc. Two plants: Cotton plant and Jute plant (or coconut tree).

Mind Maze [HOTS]

• Q1: If plants are cut down excessively, there would be less fresh air, increased air pollution, warmer surroundings, less rain, and a severe shortage of essential food, medicine, wood, and fibres.
• Q2: Plants help purify the air by producing oxygen and taking in carbon dioxide.

Learning Application (Picture-based Question)

• (a) TEA
• (b) TURMERIC
• (c) CHILLI
• (d) MUSTARD

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3. Exhaustive Objective Bank Answer Key

MCQs

• Q1: B) Carbon dioxide
• Q2: B) Roots
• Q3: B) Potato and ginger
• Q4: C) Fruit
• Q5: D) Fruits
• Q6: C) Leaves
• Q7: B) Young tea leaves
• Q8: A) Flowers
• Q9: C) Seeds
• Q10: D) Groundnut, sunflower, and mustard
• Q11: B) Spices
• Q12: C) Chillies, cardamom, and turmeric
• Q13: A) Coffee seeds/beans
• Q14: B) Cocoa beans
• Q15: C) Quinine
• Q16: B) Mint
• Q17: D) Bamboo, rubber tree, and acacia tree
• Q18: C) Furniture, pencils, and musical instruments
• Q19: C) Coconut tree
• Q20: B) Henna leaves
• Q21: B) It is a giant grass that can grow up to 91 cm in 24 hours

Fill-in-the-Blanks

• Q1: oxygen
• Q2: carrot
• Q3: ginger
• Q4: soft
• Q5: young
• Q6: cauliflower
• Q7: green peas
• Q8: crushing
• Q9: spices
• Q10: beans
• Q11: cinchona
• Q12: bamboo
• Q13: acacia
• Q14: coconut
• Q15: manure

True/False Questions

• Q1: False. Plants help control air pollution by producing oxygen and taking in carbon dioxide.
• Q2: False. Turnips and carrots are examples of edible roots (or: potato and ginger are examples of edible stems).
• Q3: True.
• Q4: False. Sugar is sweet in taste and is obtained from sugarcane plants.
• Q5: False. Basil (Tulsi) leaves are used for treating cold and cough (or: mint is used for treating stomach ailments).
• Q6: True.
• Q7: False. We get paper from bamboo plants and rubber from the juice of rubber trees.
• Q8: True.
• Q9: False. Coir is a coarse fibre obtained from coconut trees (or: jute is obtained from jute plants).
• Q10: True.

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4. Subjective & Competency Marking Rubrics

Short-Answer Questions Rubric

• Q1 (Air purification):
  • Rubric: Student must mention that plants take in carbon dioxide and release/produce oxygen. Must mention this makes the air fresh and controls air pollution.
  • Source Location: “Let’s Begin” [Passage 2], “Environmental Uses” [Passage 9].
• Q2 (Underground stems):
  • Rubric: Must state clearly that potato and ginger are underground stems because they have stem structures (buds/nodes), whereas roots lack these structures.
  • Source Location: “Stems” Fact Flash [Passage 3].
• Q3 (Oil extraction):
  • Rubric: Must mention the mechanical process of crushing (pressing hard) the seeds. Must identify mustard, sunflower, or groundnut seeds as sources.
  • Source Location: “Seeds” [Passage 4].
• Q4 (Spices):
  • Rubric: Must define spices as plant parts used to add flavour to our food. Must list three examples (e.g., chillies, cardamom, black pepper, turmeric, clove, cumin seeds).
  • Source Location: “Spices” [Passage 5].
• Q5 (Tea, coffee, chocolate parts):
  • Rubric: Tea is from young tea leaves; Coffee is from coffee beans; Chocolate is from cocoa beans. All three must be correctly matched to receive full marks.
  • Source Location: “Leaves” Fact Flash [Passage 3], “Other Food Items from Plants” [Passage 6].
• Q6 (Neem toothpastes/soaps):
  • Rubric: Must state that neem is used because it helps in killing germs and acts as an antiseptic.
  • Source Location: “Medicines” [Passage 6-7].
• Q7 (Soil fertility/manure):
  • Rubric: Must explain that dead plants decompose over time, mix with the soil, and form organic manure which acts as a natural fertilizer.
  • Source Location: “Environmental Uses” [Passage 9].
• Q8 (Cotton vs. Jute):
  • Rubric: Cotton comes from the cotton plant and is used to make clothes. Jute comes from the jute plant and is used to make bags, curtains, and carpets.
  • Source Location: “Fibres” [Passage 7-8].
• Q9 (Bamboo uniqueness):
  • Rubric: Must state that bamboo is a giant grass (not a tree). Must state it is the fastest-growing plant and can grow up to 91 cm within a 24-hour period.
  • Source Location: “Fact Flash” [Passage 9].
• Q10 (Weather and rain):
  • Rubric: Must state that plants keep the surroundings cool and help us get rain.
  • Source Location: “Environmental Uses” [Passage 9].

Scenario-Based / Competency Questions Rubric

• Q1 (Organic fertilizer scenario):
  • Rubric: The farmer should collect dead plants, leaves, and organic agricultural waste and allow them to decompose over time. This decomposes and mixes with the soil to form nutrient-rich manure, eliminating the need for chemicals.
  • Source Location: “Environmental Uses” [Passage 9].
• Q2 (Malaria fever scenario):
  • Rubric: Healer should search for the cinchona tree. They must harvest and dry its bark to extract the medicinal chemical quinine, which treats malaria.
  • Source Location: “Medicines” [Passage 6].
• Q3 (Ropes/mats manufacturing scenario):
  • Rubric: Designer should choose coir fibre. It comes from the coconut tree. Coir is preferred over cotton because it is coarse and highly strong, making it ideal for ropes, mats, and heavy bags.
  • Source Location: “Fibres” [Passage 8].
• Q4 (Grouping vegetable tray):
  • Rubric: Roots group: Turnip and Carrot. Stems group: Potato and Ginger. Student must explicitly label potato and ginger as stems to get full marks.
  • Source Location: “Roots” [Passage 2] and “Stems” [Passage 3].
• Q5 (Urban planning scenario):
  • Rubric: Planting trees will help by absorbing carbon dioxide and releasing oxygen (air purification). Trees will also keep the surroundings cool and physically control air pollution in the city.
  • Source Location: “Environmental Uses” [Passage 9].

Long-Answer / Essay Questions Rubric

• Q1 (Edible parts of plants):
  • Rubric: Must describe and provide 2 correct examples for each of the following 6 parts:
    • Roots: Turnip, radish, beetroot, carrot.
    • Stems: Potato, ginger, sugarcane.
    • Leaves: Spinach, mint, coriander.
    • Fruits: Coconut, mango, lemon.
    • Flowers: Cauliflower, broccoli.
    • Seeds: Wheat, corn, rice, green peas.
  • Source Location: “Plant Give Us Food” section [Passages 2-4].
• Q2 (Medicinal products):
  • Rubric: Must exhaustively cover all 4 plants:
    • Basil (Tulsi): Leaves are used for treating cold and cough.
    • Mint: Leaves/plant used for treating stomach ailments.
    • Cinchona: Dry bark yields quinine used for treating malaria.
    • Neem: Used in soaps and toothpastes to kill germs.
  • Source Location: “Medicines” section [Passages 6-7].
• Q3 (Industrial & textile raw materials):
  • Rubric: Must break down:
    • Paper: From the bamboo giant grass.
    • Rubber: From the liquid juice of rubber trees.
    • Gum: Adhesives obtained from acacia trees.
    • Fibres: Cotton (cotton plants for clothes), Jute (jute plants for bags, curtains, carpets), Coir (coconut trees for ropes, mats, nets, bags).
  • Source Location: “Paper, Rubber and Gum” [Passage 7] and “Fibres” [Passages 7-8].
• Q4 (Plants and the environment):
  • Rubric: Student must analyze and detail:
    • Air purification: Producing oxygen and taking in carbon dioxide.
    • Temperature regulation: Keeping immediate surroundings cool.
    • Pollution control: Actively working to control air pollution.
    • Rain facilitation: Helping get rain.
    • Soil enrichment: Dead plant matter decomposing to form fertilizing manure.
  • Source Location: “Environmental Uses” [Passage 9].
• Q5 (Timber, Perfumes, and Dyes):
  • Rubric: Must break down:
    • Wood Trees: Wood from sal, sheesham, and teak trees is used to make furniture, pencils, carts, bats, and musical instruments.
    • Perfumes: Extracted from sweet-smelling flowers like rose and jasmine.
    • Dyes: Natural coloring substances are made from henna leaves.
  • Source Location: “Wood” [Passage 7] and “Perfumes and Dyes” [Passage 8].

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