Question:
Assertion (A): Binary fission in Euglena is called symmetrogenic division.
Reason (R): Plane of fission in Euglena is at right angles to the longitudinal axis of the body.
Assertion (A): Binary fission in Euglena is called symmetrogenic division.
Reason (R): Plane of fission in Euglena is at right angles to the longitudinal axis of the body.
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Remember: {Euglena} undergoes longitudinal binary fission, hence (R) is false.
Updated On: Jun 2, 2025
- Both (A) and (R) are true. (R) is correct explanation for (A)
- Both (A) and (R) are true. (R) is not 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 C
Solution and Explanation
- In Euglena, binary fission is called symmetrogenic division because the two daughter cells are morphologically identical.
- However, the plane of fission is longitudinal, i.e., it runs along the length of the body — not at right angles.
Thus, (A) is true, but (R) is incorrect.
- However, the plane of fission is longitudinal, i.e., it runs along the length of the body — not at right angles.
Thus, (A) is true, but (R) is incorrect.
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