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Test: Adaptations in Plants- 3 - Class 4 MCQ


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10 Questions MCQ Test Science for Class 4 - Test: Adaptations in Plants- 3

Test: Adaptations in Plants- 3 for Class 4 2024 is part of Science for Class 4 preparation. The Test: Adaptations in Plants- 3 questions and answers have been prepared according to the Class 4 exam syllabus.The Test: Adaptations in Plants- 3 MCQs are made for Class 4 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Adaptations in Plants- 3 below.
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Test: Adaptations in Plants- 3 - Question 1

How do underwater plants help fish and other aquatic animals?

Detailed Solution for Test: Adaptations in Plants- 3 - Question 1
Underwater plants release oxygen into the water during photosynthesis. This oxygen is important for fish and other aquatic animals to breathe and live, helping to keep the water healthy.
Test: Adaptations in Plants- 3 - Question 2

What is a primary benefit of underwater plants to aquatic animals?

Detailed Solution for Test: Adaptations in Plants- 3 - Question 2
Underwater plants release oxygen during the process of photosynthesis. This oxygen is essential for the survival of aquatic animals, as it helps maintain a healthy and balanced ecosystem in the water. This oxygenation supports various forms of aquatic life, ensuring their well-being and sustaining the aquatic habitat. An interesting fact is that underwater plants, by producing oxygen, also help in improving water quality and clarity.
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Test: Adaptations in Plants- 3 - Question 3

How do underwater plants like Hydrilla survive underwater?

Detailed Solution for Test: Adaptations in Plants- 3 - Question 3
Underwater plants like Hydrilla have thin, narrow leaves that let water pass through them easily. This helps the plants stay in place and not get torn by water movement.
Test: Adaptations in Plants- 3 - Question 4
Which of the following is an example of plant adaptation?
Detailed Solution for Test: Adaptations in Plants- 3 - Question 4
Roses use thorns to scare off animals that might eat them, which is a form of adaptation. This physical feature helps the plant protect itself from being consumed by herbivores, ensuring its survival and ability to reproduce.
Test: Adaptations in Plants- 3 - Question 5
What are plants that grow in water called?
Detailed Solution for Test: Adaptations in Plants- 3 - Question 5
Plants that grow in water are called aquatic plants. They live in water environments like lakes, ponds, rivers, and oceans.
Test: Adaptations in Plants- 3 - Question 6
What helps fixed aquatic plants like water lilies stay afloat?
Detailed Solution for Test: Adaptations in Plants- 3 - Question 6
Fixed aquatic plants, like water lilies, have broad leaves with a waxy surface that helps them float on the water. The waxy coating keeps the leaves dry and prevents them from rotting.
Test: Adaptations in Plants- 3 - Question 7

What did Charles Darwin claim about plants and animals?

Detailed Solution for Test: Adaptations in Plants- 3 - Question 7

Charles Darwin believed that plants and animals have changed and developed from older kinds of life. This means that over a long time, they have transformed into the different plants and animals we see today. It's like how a baby grows into a child and then into an adult.

Test: Adaptations in Plants- 3 - Question 8
Why do fixed aquatic plants have stomata on the upper side of their leaves?
Detailed Solution for Test: Adaptations in Plants- 3 - Question 8
Fixed aquatic plants, such as water lilies, have stomata on the upper side of their leaves to take in air. This is important because their leaves float on the water, so having stomata on top allows them to get the carbon dioxide they need for photosynthesis.
Test: Adaptations in Plants- 3 - Question 9
Why do floating plants like duckweed have spongy leaves with air spaces?
Detailed Solution for Test: Adaptations in Plants- 3 - Question 9
Floating plants like duckweed have spongy leaves filled with air spaces, which help them float on the water. This makes it easier for the plant to get sunlight and stay stable on the water surface.
Test: Adaptations in Plants- 3 - Question 10

State whether the following statement is True or False:

Plants in heavy-rainfall areas have leaves that do not capture sunlight for photosynthesis.

Detailed Solution for Test: Adaptations in Plants- 3 - Question 10
  • Plants in heavy-rainfall areas, like lychee, cashew, pineapple, sugar cane, cotton, rubber, and teak, have broad and abundant leaves that capture sunlight for photosynthesis.
  • This process helps plants make their food using sunlight.
  • So, the statement is False because these plants do capture sunlight through their leaves to make food.
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