Question

In vorticella, the total number of micronuclei formed at the end of pre-zygotic nuclear division in female gamete is

• A. 4
• B. 6
• C. 8
• D. 5

Answer 1

Answer: (A)

4

Vorticella divides by binary fission into two very unequal parts, the larger cell is the ordinary individual, while the other is known as micro-conjugant. The microconjugants swims and reaches the macroconjugants. The macronuclei of both the individual degenerate but the micronuclei undergo mitosis to form four daughter nuclei.

So, the correct answer is option A.