CBSE Class 4 > Class 4 Notes > Science > Unit Test: Adaptations in Plants
Unit Test: Adaptations in Plants
Total Marks: 20
Attempt all questions.
- Question numbers 1 to 8 carry 1 mark each.
- Question numbers 9 to 11 carry 2 marks each.
- Question numbers 12 & 13 carry 3 marks each.
Q1: What is a habitat? (1 Mark)
Q2: Which of these is a floating plant? (1 Mark)
a) Hydrilla
b) Lotus
c) Duckweed
d) Pine
Q3: What helps desert plants reduce water loss? (1 Mark)
Q4: Name any one deciduous tree found in plains. (1 Mark)
Q5: Which plants have aerial roots? (1 Mark)
Q6: What type of leaves do mountain plants have? (1 Mark)
Q7: Which scientist wrote "On the Origin of Species"? (1 Mark)
Q8: What percentage of Earth is covered by water? (1 Mark)
Q9: Why do plants need to adapt? (2 Marks)
Q10: Write two features of fixed aquatic plants. (2 Marks)
Q11: How do cactus plants survive in deserts? (Any two points) (2 Marks)
Q12: Describe the adaptations of underwater plants with examples. (3 Marks)
Q13: Explain how plants in mountains are adapted to survive cold and snowy conditions. (3 Marks)
You can access the solutions to this Unit Test here.
The document Unit Test: Adaptations in Plants is a part of the Class 4 Course Science for Class 4.
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FAQs on Unit Test: Adaptations in Plants
| 1. What are plant adaptations? |  |
Ans. Plant adaptations are special features or characteristics that enable plants to survive and thrive in their specific environments. These adaptations can be structural, behavioural, or physiological, allowing plants to cope with factors such as climate, soil type, and available water.
| 2. How do cacti adapt to arid environments? | |
Ans. Cacti have several adaptations to survive in arid environments. They have thick, fleshy stems that store water, and their spines reduce water loss by minimising airflow around the plant. Additionally, cacti have a waxy coating on their surface to prevent water evaporation.
| 3. What adaptations do plants in tropical rainforests exhibit? | |
Ans. Plants in tropical rainforests have adaptations such as large leaves to capture more sunlight and a drip tip to shed excess water. Their roots often grow above ground to access nutrients and prevent flooding, while some plants climb on taller trees to reach sunlight.
| 4. Why do some plants have deep roots? | |
Ans. Some plants develop deep roots to access water and nutrients that are not available in the topsoil. This adaptation is particularly important in dry or nutrient-poor environments, allowing the plants to survive during times of drought or when surface resources are scarce.
| 5. How do floating plants survive in water? | |
Ans. Floating plants have adaptations such as broad, flat leaves that help them stay on the water's surface. Their roots hang down into the water, allowing them to absorb nutrients, while air-filled spaces within their stems keep them buoyant and enable them to access sunlight for photosynthesis.
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Apr 29, 2026 Last updated
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