Question:
Assertion (A): Cartilaginous fishes are viviparous.
Reason (R): Males of cartilaginous fishes have claspers to facilitate internal fertilization.
Assertion (A): Cartilaginous fishes are viviparous.
Reason (R): Males of cartilaginous fishes have claspers to facilitate internal fertilization.
Reason (R): Males of cartilaginous fishes have claspers to facilitate internal fertilization.
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Claspers help internal fertilization, not viviparity itself.
Updated On: Jun 20, 2026
- Both A and R are correct and R is the correct explanation of A
- Both A and R are correct but R is not correct explanation of A
- A is true but R is wrong
- A is wrong but R is true
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The Correct Option is B
Solution and Explanation
Step 1: Understanding cartilaginous fishes.
Cartilaginous fishes include sharks and rays. Many exhibit viviparity, though not all species.
Step 2: Evaluating Assertion (A).
Cartilaginous fishes include viviparous species, so assertion is generally considered correct.
Step 3: Understanding claspers.
Male sharks possess claspers that help in internal fertilization.
Step 4: Evaluating Reason (R).
The reason is correct because claspers facilitate internal fertilization.
Step 5: Linking A and R.
However, viviparity is not solely due to claspers; it depends on reproductive adaptation, so R is not the correct explanation of A.
Step 6: Final conclusion.
Thus, both A and R are correct but R is not the correct explanation of A.
Cartilaginous fishes include sharks and rays. Many exhibit viviparity, though not all species.
Step 2: Evaluating Assertion (A).
Cartilaginous fishes include viviparous species, so assertion is generally considered correct.
Step 3: Understanding claspers.
Male sharks possess claspers that help in internal fertilization.
Step 4: Evaluating Reason (R).
The reason is correct because claspers facilitate internal fertilization.
Step 5: Linking A and R.
However, viviparity is not solely due to claspers; it depends on reproductive adaptation, so R is not the correct explanation of A.
Step 6: Final conclusion.
Thus, both A and R are correct but R is not the correct explanation of A.
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