MHT CET · BIOLOGY · STD 12 - 2. Reproduction in Lower and Higher Animals

Select the INCORRECT statement regarding process of cleavage in human.

A It is the process of early mitotic as well as meiotic divisions of zygote to form multicellular blastula.
B \(1^{\text {st }}\) cleavage is meridional, \(2^{\text {nd }}\) cleavage is longitudinal but at right angles to the First.
C Cleavage is holoblastic, radial and indeterminate
D There is no growth between cleavages, resulting in reduced size of blastomeres after cleavage.

Verified Solution

Answer & Solution

Correct Answer

(A) It is the process of early mitotic as well as meiotic divisions of zygote to form multicellular blastula.

Step-by-step Solution

Detailed explanation

Cleavage is the process of early mitotic division of the zygote into a hollow multicellular blastula.

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

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