Class 4 Science Adaptation in Plants  | MCQs, True/False, Fill in the Blanks, Match the Following & Long Answer Solutions

Get complete answers to the Class 4 Science Adaptation in Plants  worksheet. Includes MCQs, True/False, Fill in the Blanks, Match the Following, Short Answer, Long Answer, and HOTS questions with easy explanations.

A. Tick (✓) the Right Answer

1. Terrestrial plants are the plants that grow __________.

Answer: (a) on land ✅

2. Babool and cactus are __________ plants.

Answer: (c) desert ✅

3. Fir trees are __________.

Answer: (b) flowerless ✅

4. Which one is an underwater plant?

Answer: (a) Tape grass ✅

5. Underwater plants have __________ leaves.

Answer: (a) ribbon-like ✅

B. Write ‘T’ for True and ‘F’ for False Statements

1. Fir and pine trees grow on mountains.

Answer: True (T)

2. Duckweed and lotus are fixed plants.

Answer: False (F)

3. Leaves of a cactus plant are reduced to spines.

Answer: True (T)

4. Leaves of a lotus plant are broad and float on water.

Answer: True (T)

5. Mushrooms have chlorophyll.

Answer: False (F)

C. Fill in the Blanks

1. Lotus is a/an __________ plant.

Answer: aquatic

2. Date-palm grows in the __________ region.

Answer: desert

3. Waterlogged places are called __________.

Answer: marshes

4. __________ is an insectivorous plant.

Answer: Venus flytrap

5. Duckweed is a __________ plant.

Answer: floating

D. Match the Following

Column A	Column B
1. Cactus	(d) Desert
2. Sheesham	(f) Plains
3. Pepper	(e) Hot and damp place
4. Pine	(a) Hilly area
5. Mangroves	(c) Marshy lands
6. Tape grass	(b) Underwater plant

Let’s Think and Answer – A. Short Answer Questions

 

1. How does lotus remain floating?

Answer:
Lotus remains floating because it has hollow stems with air spaces and broad, waxy leaves that float on the surface of water.

2. What are insectivorous plants?

Answer:
Insectivorous plants are plants that trap and digest insects to obtain nutrients.

Examples: Venus flytrap, Pitcher plant and Sundew.

3. Give two adaptations of the plants that grow in deserts.

Answer:

• Leaves are reduced to spines to reduce water loss.
• Thick green stems store water and prepare food.

4. Can non-green plants make their own food? Why?

Answer:
No. Non-green plants cannot make their own food because they do not contain chlorophyll.

5. Why do some plants have thorns on their bodies?

Answer:
Plants have thorns to protect themselves from grazing animals.

6. Give two adaptations of the plants growing on mountains.

Answer:

• They have conical-shaped bodies.
• They have needle-like leaves with a waxy coating.

B. Long Answer Questions

1. Differentiate between terrestrial plants and aquatic plants with examples.

Answer:

Terrestrial Plants	Aquatic Plants
Grow on land.	Grow in water.
Need soil for growth.	Live in ponds, lakes and rivers.
Examples: Mango, Neem, Cactus	Examples: Lotus, Duckweed, Water Lily

2. Discuss the features of plants that grow in plain regions.

Answer:
Plants growing in plains have plenty of sunlight, fertile soil and enough water. They have many branches with broad leaves. Many of these plants are deciduous, which means they shed their leaves in winter to save water. New leaves grow during spring.

3. What are the differences between a floating plant and a fixed aquatic plant?

Answer:

Floating Plants	Fixed Plants
Float freely on water.	Roots remain fixed in the mud.
Light and spongy.	Have hollow stems with air spaces.
Examples: Duckweed, Water Hyacinth	Examples: Lotus, Water Lily

4. How do mangrove plants survive in marshes?

Answer:
Mangrove plants grow in marshy areas where the soil is waterlogged. Their roots grow above the ground and have tiny openings that help them breathe. These are called breathing roots.

5. How do non-green plants obtain food?

Answer:
Non-green plants do not have chlorophyll, so they cannot prepare their own food. They obtain food from dead and decaying plants and animals. Such plants are called saprophytic plants.

C. HOTS Questions

1. Why are some plants grown in an aquarium?

Answer:
Some aquatic plants are grown in aquariums because they release oxygen into the water, provide shelter for fish and help keep the water clean.

2. Why do insectivorous plants feed on insects?

Answer:
Insectivorous plants feed on insects because they grow in nutrient-poor soil. They obtain essential nutrients, especially nitrogen, by digesting insects.