Question

Assertion (A): Trichoderma species are free living fungi that are very common in the root ecosystems.
Reason (R): They are effective bio-control agents of several plant pathogens.

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

Hint:

Trichoderma species are beneficial fungi that are commonly used in organic farming and biocontrol applications for their ability to suppress soil-borne pathogens.

Answer 1

The Correct Option is A

Step 1: Understanding Trichoderma species.
Trichoderma species are indeed free-living fungi commonly found in the root ecosystems. They interact with plants and the surrounding environment, playing a significant role in plant health.

Step 2: Verifying their role as bio-control agents.
Trichoderma species are well-known for their ability to act as bio-control agents by inhibiting or parasitizing harmful plant pathogens, thus helping in plant protection.

Step 3: Conclusion.
Both the assertion and reason are true, and the reason correctly explains the assertion. Therefore, the correct answer is (A).
Final Answer: (A) Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).