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: Evaluate Assertion (A)
Assertion (A): Green plants capture only 1% of incident solar energy.
✔️ This statement is correct. Approximately 1% of sunlight reaching the Earth's surface is absorbed by chlorophyll in green plants for photosynthesis.

Step 2: Evaluate Reason (R)
Reason (R): All green plants function as producers in a food chain.
✔️ This statement is also correct. Green plants synthesize their own food via photosynthesis, thus acting as the primary producers in all food chains.

Step 3: Determine if Reason (R) explains Assertion (A)
❌ While both the assertion and reason are factually accurate, the reason does not elucidate the cause for the 1% solar energy capture.
- The role of plants as producers does not dictate the proportion of solar energy they absorb.
- The 1% energy capture rate is attributable to the efficiency of photosynthesis and environmental variables.

Final Conclusion:
Both Assertion (A) and Reason (R) are true, but Reason (R) does not provide the correct explanation for Assertion (A).