If you are looking for DAV Class 4 Science Chapter 2 Question Answer Plants of My Living World science book, then you are at the right place. Here at NCERTBooksPDF, Class 4 Science Chapter 2 exercises are solved with accurate, child-friendly explanations, clear comparisons, and complete solutions to help DAV students score top marks in their exams.
Table of Contents
- DAV Class 4 Science Chapter 2 Plants Solutions
- A. Fill in the Blanks
- B. Write True or False (With Explanations)
- C. Tick the Correct Option
- D. Answer the Following Questions in Brief
- E. Answer the Following Questions (Detailed Explanations)
- Value-Based Questions
- Something to Do
DAV Class 4 Science Chapter 2 Plants Solutions
DAV Class 4 Science Chapter 2 Plants focuses on root systems (taproot vs. fibrous root), edible roots, aerial roots in mangroves and banyan trees, and root functions. Below are the complete step-by-step textbook solutions.
A. Fill in the blanks.
1. Root is the underground part of a plant.
2. Roots absorb water and minerals for the plant.
3. Neem and peepal have tap roots.
4. Carrot and radish are edible roots.
5. Mangrove plants have aerial (breathing) roots.
Answer: (1) Root | (2) water, minerals | (3) tap | (4) Carrot, radish | (5) aerial
B. Write True or False for the following statements.
1. Carrot and beetroot store food in them.
Answer: True
Reason: Carrot and beetroot have swollen, fleshy roots that store reserve food for the plant and are eaten as nutritious vegetables.
2. Beans and rose have fibrous roots.
Answer: False
Reason: Beans and rose have tap roots. Cereals, grasses, and bananas have fibrous roots.
3. All roots are edible.
Answer: False
Reason: Only certain specialized roots store food and can be eaten; many roots are hard, woody, and non-edible.
4. Roots do not get sufficient oxygen in marshy areas.
Answer: True
Reason: In marshy, clayey soil, water fills all soil spaces leaving no air, which is why mangrove roots grow upward out of the soil to breathe.
C. Tick (✓) the correct option.
1. The root of this plant stores food—
(a) mango
(b) apple
(c) banana
(d) carrot
Answer: (d) carrot
Explanation: Carrot is an edible taproot that stores food synthesized by leaves.
2. This plant has a tap root—
(a) banana
(b) grass
(c) wheat
(d) rose
Answer: (d) rose
Explanation: Rose, neem, pea, and beans have a single main taproot, whereas banana, grass, and wheat have fibrous roots.
3. These plants have breathing roots—
(a) mangrove
(b) apple
(c) neem
(d) peepal
Answer: (a) mangrove
Explanation: Mangroves grow in waterlogged salty marshes and have aerial breathing roots (pneumatophores) that emerge from the mud to absorb atmospheric oxygen.
D. Answer the following questions in brief.
1. Name the two different types of roots.
Answer: The two main types of roots are Tap root and Fibrous root.
2. Give two examples of plants having fibrous roots.
Answer: Wheat and Banana (also grass and onion).
3. Why do aerial roots need to come out of the soil?
Answer: Aerial roots need to come out of the soil because in marshy wetlands the soil is completely soaked in water and lacks sufficient oxygen. These roots come out into the open air to absorb fresh oxygen from the atmosphere.
E. Answer the following questions.
1. Draw the shape of the tap root and the fibrous root.
Answer:
- Tap Root: A single, thick, tapering main central root that grows vertically downward deep into the soil, with smaller lateral roots branching out (e.g., Rose, Radish, Neem).
- Fibrous Root: A cluster of thin, thread-like roots of almost equal length and thickness arising directly from the base of the stem, spreading like a bushy bunch in topsoil (e.g., Grass, Wheat, Rice, Onion).
2. In what way(s) is the tap root different from the fibrous root?
Answer:
| Feature | Tap Root | Fibrous Root |
|---|---|---|
| Structure | Has one main, thick central root with thin lateral branches. | Consists of a cluster of many equal-sized, bushy roots. |
| Origin | Grows directly as a continuation of the main stem downward. | Arises in a bunch from the base of the stem. |
| Depth in Soil | Penetrates deep vertically into the soil. | Remains near the surface, spreading horizontally. |
| Examples | Neem, Peepal, Rose, Carrot, Radish, Ladyfinger. | Wheat, Rice, Grass, Maize, Onion, Banana. |
3. State the two main functions of roots.
Answer: The two main functions of roots are:
- Fixation: Roots anchor and hold the plant firmly upright in the soil, preventing it from getting uprooted by wind or rain.
- Absorption: Roots absorb water and dissolved minerals from the soil and transport them upward to the stem and leaves for making food.
4. In what way are the roots of banyan tree and maize ‘special’?
Answer:
- Banyan tree: The heavy horizontal branches of a banyan tree produce special aerial roots that hang down, reach the soil, and act as strong pillar-like supports (prop roots).
- Maize plant: Maize has long, thin stems that cannot stand upright alone in strong winds. Special supporting roots arise from the lower base of the stem above the ground and penetrate the soil to hold the plant firmly erect (stilt roots).
Value-Based Questions
Rohan saw Ram Manohar, the watchman, cutting a small tree to make a fire to warm himself. He immediately asked him not to do so. Later, he went home and requested his mother to give a blanket to the watchman. The watchman was very happy to get the blanket. He thanked Rohan and promised him that he would not cut any tree.
1. What does the above situation tell us about Rohan?
Answer: It shows that Rohan is an observant, caring, empathetic, and environmentally conscious boy who understands the importance of protecting trees while finding practical solutions to help others in need.
2. How did he help the watchman?
Answer: Rohan helped the watchman by bringing a warm blanket from his home so that the watchman could keep himself warm during cold nights without having to cut down trees for firewood.
3. Rohan stopped the watchman from cutting trees. Have you ever done anything similar to save your environment?
Answer: Yes, I regularly plant tree saplings in my school and colony on Van Mahotsav, water existing plants, and stop people from plucking flowers or breaking branches in public parks.
Something to Do
1. Observing Root Types: Gently uproot a small wild grass sapling and a mustard plant. Wash the soil off. Observe that grass has a cluster of thin thread-like fibrous roots, while mustard has a distinct thick central taproot with lateral branches.
2. Edible Roots Chart: Prepare a chart showing edible roots: Carrot (eaten raw in salads or cooked into halwa), Radish (eaten raw or in parathas), Beetroot (eaten in salads or juice), and Turnip (cooked into vegetable curries).
Related Chapters:
- DAV Class 4 Science Solutions (All Chapters)
- DAV Class 4 Science Chapter 1 My Body
- DAV Class 4 Science Chapter 3 Flowers and Fruits
🎉 Chapter 2 Completed!
📑 Complete Book Chapters (DAV Class 4 Science – My Living World):
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