Question

Assertion (A): Green plants trap only 1% of the energy of sunlight that falls on their leaves. Reason (R): All green plants are the producers in a food chain.

• A. Both Assertion (A) and Reason (R) are true, and Reason (R) is the correct explanation of Assertion (A).
• B. Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of Assertion (A).
• C. Assertion (A) is true, but Reason (R) is false.
• D. Assertion (A) is false, but Reason (R) is true.

Answer 1

The Correct Option is B

Step 1: Analyze the Assertion (A)
Assertion (A): Green plants trap only 1% of the energy of sunlight that falls on their leaves.
✔️ This statement is true. Out of the total sunlight that reaches the Earth's surface, only about 1% is captured by chlorophyll in green plants and used for photosynthesis.

Step 2: Analyze the Reason (R)
Reason (R): All green plants are the producers in a food chain.
✔️ This statement is also true. Green plants prepare their own food through photosynthesis and serve as the starting point (producers) in all food chains.

Step 3: Check if Reason (R) explains Assertion (A)
❌ Although both the assertion and reason are correct, the reason does not explain why green plants trap only 1% of the sunlight.
- The fact that plants are producers does not limit the percentage of solar energy they absorb.
- The 1% energy capture is due to the efficiency of photosynthesis and various environmental factors.

Final Answer:
Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of Assertion (A).