Multiple choice

Which of the following statements is incorrect?

  1. The spermatids differentiate into structurally different complex.

  2. Fertilization is a physico-chemical event.

  3. Cleavage transforms the fertilized ovum into a sphere of aggregated blastomeres.

  4. Cleavage divisions bring appreciable increase in the mass of protoplasm in the developing embryo.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Cleavage involves rapid mitotic divisions that increase the number of cells (blastomeres) without increasing the overall size or mass of the embryo. Therefore, the statement that it brings an appreciable increase in the mass of protoplasm is incorrect.

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