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Assertion : Setae are absent in clitellu...

Assertion : Setae are absent in clitellum
Reason : Setae help in locomotion.

A

If both assertion and reason are true and reason is the correct explanation of assertion

B

If both assertion and reason are true but reason is not the correct explanation of assertion

C

If assertion is true but reason is false

D

If both assertion and reason are false

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question regarding the assertion and reason about setae in clitellum, we can follow these steps: ### Step-by-Step Solution: 1. **Understanding the Assertion**: - The assertion states that "Setae are absent in clitellum." - In earthworms (which belong to the phylum Annelida), the clitellum is a thickened, glandular section of the body that plays a crucial role in reproduction. It is located in segments 14 to 16. 2. **Verifying the Assertion**: - It is true that setae (small, bristle-like structures) are indeed absent in the clitellum. Setae are present in other segments of the earthworm's body but are not found in the clitellum itself. 3. **Understanding the Reason**: - The reason states that "Setae help in locomotion." - Setae are important for locomotion in earthworms as they help the organism grip the substrate and move effectively. 4. **Verifying the Reason**: - This statement is also true. Setae assist in locomotion by anchoring the worm to the ground while it contracts and expands its body. 5. **Analyzing the Relationship**: - While both the assertion and reason are true, the reason does not explain why setae are absent in the clitellum. The absence of setae in the clitellum is related to its specific function in reproduction rather than locomotion. 6. **Conclusion**: - Since both the assertion and reason are true but the reason does not correctly explain the assertion, the correct answer is: "Both assertion and reason are true but reason is not the correct explanation of assertion." ### Final Answer: The correct option is: **Both assertion and reason are true but reason is not the correct explanation of assertion.** ---
To solve the question regarding the assertion and reason about setae in clitellum, we can follow these steps: ### Step-by-Step Solution: 1. **Understanding the Assertion**: - The assertion states that "Setae are absent in clitellum." - In earthworms (which belong to the phylum Annelida), the clitellum is a thickened, glandular section of the body that plays a crucial role in reproduction. It is located in segments 14 to 16. ...
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