Page 162 - In-Text Questions & Solutions
Think and Discus
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1. Observe a tree near your house. Think and Discuss how it helps us in our daily life.Ans: Trees give us fresh oxygen to breathe, provide cool shade to sit under, yield delicious fruits and vegetables, and give shelter to birds and animals.
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2. Look at the plants around your school or home. Identify which plant gives fruits and which plant gives shade in your surroundings.Ans: Mango, guava, and banana plants give us delicious fruits, while big trees like neem, banyan, and tamarind trees provide cool shade in our surroundings.
Page 164 - In-Text Questions & Solutions
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1. Collect and observe the roots of some plants. Do all the roots look alike? Discuss with your friends.Ans: No, all the roots do not look alike. Some roots are thick and grow deep into the ground, while some roots are thin and fibrous. Also, some roots store food like carrot, beetroot, and radish.
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2. Geetha: Nanna, if the roots are so important, what is the use of a stem?Ans: The stem holds the plant upright and carries water, food, and minerals absorbed by the roots to all other parts of the plant.
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3. Do all the plants have same type of stems?Ans: No, all plants do not have the same type of stems. Some plants have soft and green stems, while some have brown and hard stems. Some stems are thick, and some are thin.
Page 168 - Activity & Solutions
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Activity: Tick (✓) in the suitable box for the following plants:
Name of the Plant Trees Shrubs Herbs Climbers Creepers Watermelon ✓ Rose ✓ Mango ✓ Bitter gourd ✓ Hibiscus ✓ Neem ✓ -
Amazing Fact - Wolffia Plant: What is the smallest plant in the world and how does it help?Ans: The world's smallest plant is Wolffia. This plant cleans polluted water by absorbing harmful chemicals like a sponge.
Page 170 - In-Text Questions & Solutions
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1. Why do plants have so many leaves?Ans: Leaves prepare food for the plant using sunlight, air, and water, helping the plant grow healthy and strong.
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2. What are the main parts of a leaf?Ans: The main parts of a leaf are Petiole, Leaf Margin, Vein, and Apex.
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3. Have you observed the leaves of different plants? Are all the leaves same in size, shape, colour and smell?Ans: Yes, I have observed leaves of different plants. No, all leaves are not the same. They differ in size (e.g., big banana leaf vs. tiny tamarind leaf), shape, color (green, red, yellow), and aroma (e.g., Tulsi, Coriander).
Page 172 - In-Text Questions & Solutions
Page 174 - In-Text Questions & Solutions
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1. Blindfold Activity: Do all crushed leaves (lemon, mango, neem, tulsi, pudina, coriander) smell the same?Ans: No, they do not smell the same. Each leaf has a unique aroma that allows us to identify it even when blindfolded.
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2. What are the different uses of leaves in our daily life?Ans: 1. We eat leaves like coriander, curry leaves, and drumstick leaves.
2. Tea is made from tea leaves.
3. Neem and tulsi leaves are used as medicines.
4. Banana, banyan, and sal leaves are used to make disposable plates and bowls for serving food. -
3. Think and Discuss: If there were no leaves on plants, what problems would we face?Ans: If there were no leaves, plants could not prepare food and would die. Without plants, humans and animals would not get food or oxygen to breathe.
Page 180 - Improve Your Learning Questions & Solutions
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1. Name any two plants you see in your surroundings.Ans: Neem plant and Rose plant.
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2. Write the names of any two parts of a plant.Ans: Roots and Leaves.
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3. Name one tree and one herb.Ans: Tree: Banyan tree | Herb: Coriander plant.
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4. Which part of the plant makes food?Ans: Leaf makes food for the plant.
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5. Why do we need plants?Ans: We need plants because they provide us with oxygen to breathe, food (fruits and vegetables), medicines, wood, shade, and fresh air.
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6. How do roots help the plant?Ans: Roots fix the plant firmly into the soil and absorb water and nutrients from the soil for the plant to grow.
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7. Explain the function of a leaf in a plant.Ans: The main function of a leaf is to prepare food for the plant using air, water, and sunlight.
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8. You feel hot while playing outside. Which plant part helps give shade and cool air? ( B )A) Root B) Leaf
C) Flower D) StemAns: B) Leaf -
9. A plant in a very small pot falls down easily. What is the reason? ( A )A) Weak roots B) Very big leaves
C) Very big flowers D) Green colourAns: A) Weak roots -
10. Observe the leaves of two different plants near your home. Think and discuss how they are different.Ans: When I observed a Banana leaf and a Neem leaf, I found that the Banana leaf is very big and broad, whereas the Neem leaf is small with jagged margins. They also differ in shape and smell.
Page 182 - Improve Your Learning Questions & Solutions
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11. Observe two plants — a tree and a climber. How are they different?Ans: A tree has a strong, thick, hard trunk that stands upright on its own, whereas a climber has a weak stem and needs support (like a wall, stick, or another tree) to grow tall.
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12. Match the following:
Ans: Contains seeds — Fruit, Holds plant in soil — Roots, Carries water — Stem, Makes food — Leaf -
13. A boy plucks leaves from a plant for fun. Is this right or wrong? Why?Ans: It is wrong. Leaves prepare food for the plant using sunlight. Plucking leaves hurts the plant and stops it from making food to grow.
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14. Your friend throws garbage near plants. What will you tell him?Ans: I will advise my friend not to throw garbage near plants because it harms the soil and affects plant growth. I will ask him to throw garbage only in dustbins to keep our environment clean.
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15. Draw and label any four parts of a plant.
