Question:
Assertion (A): Binary fission in {Paramecium} is called perkinetal fission.
Reason (R): Plane of fission in {Paramecium} is at right angles to longitudinal axis of the body.
Assertion (A): Binary fission in {Paramecium} is called perkinetal fission.
Reason (R): Plane of fission in {Paramecium} is at right angles to longitudinal axis of the body.
Reason (R): Plane of fission in {Paramecium} is at right angles to longitudinal axis of the body.
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Different types of fission depend on the plane of division relative to the cell’s axis.
Updated On: Mar 19, 2026
- (A) and (R) are true. (R) is correct explanation for (A)
- (A) and (R) are true. But (R) is not the correct explanation for (A)
- (A) is true, but (R) is false
- (A) is false, but (R) is true
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The Correct Option is B
Solution and Explanation
In perkinetal fission of {Paramecium}, the axis of fission is transverse, hence both A and R are correct but not directly related causally.
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