Diversity in the Living World — Hard

Q1. Assertion (A): The conical shape of a deodar tree is an adaptation. Reason (R): Special features that enable plants and animals to survive in a particular region are called adaptations.

• A. Both A and R are true, and R is the correct explanation of A.
• B. Both A and R are true, but R is NOT the correct explanation of A.
• C. A is true, R is false.
• D. A is false, R is true.

Q2. Consider the following statements about a camel in the hot desert of Rajasthan: I. It has long legs and wide hooves. II. It has two humps on its back. III. It stores food in its hump. Which statements are correct?

• A. I and II only
• B. II and III only
• C. I and III only
• D. All three

Q3. Why do the humps of a camel of the cold desert of Ladakh shrink in late winter?

• A. Food becomes scarce and stored food in the humps is used up
• B. Snow melts and humps absorb the water
• C. The camel loses its long hair in winter
• D. The camel's legs grow longer in winter

Q4. Maya saw deodar trees in the Himalayas. Their conical shape and sloping branches are adaptations because they

• A. Help the tree attract more sunlight in summer
• B. Help the tree store water in the trunk
• C. Help the tree resist strong river currents
• D. Let snow slide off easily during snowfall

Q5. Alex observed cactus plants in the deserts of Rajasthan. The thick fleshy stem of a cactus helps it survive because the stem

• A. Helps the plant trap insects for food
• B. Stores water and helps the plant tolerate the hot conditions
• C. Makes the plant float on sand during sandstorms
• D. Glows during cold desert nights

Q6. In the Shola forests of the Nilgiris, Maya saw rhododendrons (burans) that were short with small leaves. The most likely reason for these features is to

• A. Survive the heavy winds on mountain tops
• B. Float on rainwater during the monsoon
• C. Defend against grazing camels
• D. Stay warm by reflecting sunlight

Q7. Sagar saw colourful fish in the ocean. The streamlined body of a fish is best described as an adaptation that helps it to

• A. Swim easily through water
• B. Climb on coral rocks
• C. Stay warm in cold water
• D. Reflect light away from predators

Q8. Consider the following statements about ‘Project Tiger’: I. It was initiated by the Government of India. II. It was started in 1973. III. Its main aim is to conserve the declining population of the Bengal Tiger. Which statements are correct?

• A. I and II only
• B. I and III only
• C. II and III only
• D. All three

Q9. The ‘Cheetah Reintroduction Project’ in India was initiated in

• A. 1973
• B. 2022
• C. 1976
• D. 2000

Q10. The Silent Valley in Kerala was saved by a public movement against

• A. A coal mining project
• B. A nuclear power station
• C. A hydroelectric dam across the Kunthipuzha river
• D. A national highway through the valley

Q11. Sacred groves found across India are best described as

• A. Undisturbed forest patches protected by the local community
• B. Government-owned tree plantations for timber
• C. Special agricultural fields for medicinal plants
• D. Tourist parks with admission charges

Q12. A Class 6 teacher asks students to sort cards of plants and animals into groups in Activity 2.3. The main pedagogical purpose of this task is to

• A. Test memory of plant and animal names
• B. Improve handwriting through labelling
• C. Develop the science-process skill of classifying based on observed features
• D. Train students to use scissors and glue

Q13. After Activity 2.3, the teacher finds that different groups have chosen different bases for grouping. From a pedagogy point of view, this most strongly shows that

• A. Some groups did not understand the activity
• B. There can be more than one valid basis for classifying plants and animals
• C. The activity should be redone with one fixed answer
• D. Only the teacher's basis is correct

Q14. Consider the following statements about a typical dicot plant: I. The leaves show reticulate venation. II. The plant has a taproot system. III. The seed has a single thin cotyledon. Which statements are correct?

• A. I and III only
• B. II and III only
• C. I and II only
• D. All three

Q15. A flowchart in an exercise sorts plants by leaves and venation. ‘A’ is the branch ‘has reticulate venation: Yes’ and ‘B’ is ‘reticulate venation: No’. Suitable examples of A and B are

• A. A — mango; B — wheat
• B. A — wheat; B — mango
• C. A — banana; B — grass
• D. A — maize; B — chickpea