Question

Choose the correct statements with reference to reproduction in paramecium
(a) Micronucleus divides by mitosis and micronucleus by amitosis
(b) Micronucleus is polyploid and macronucleus is diploid
(c) After karyokinesis, parent cell divides into two daughter cells, anterior proter and posterior opisthe
(d) It undergoes transverse binary fission during favourable condition.

• A. (a), (b) and (d)
• B. (b), (c) and (d)
• C. (a), (c) and (d)
• D. (a), (b) and (c)

Answer 1

The correct option is C (a), (c) and (d)

• Paramecium reproduces asexually, by binary fission. During reproduction, the macronucleus splits by a type of amitosis, and the micronuclei undergo mitosis.
• The cell then divides transversally, and each new cell obtains a copy of the micronucleus and the macronucleus.
• Hence, Micronucleus divides by mitosis and the micronucleus by amitosis. After karyokinesis, the parent cell divides into two daughter cells, anterior proter, and posterior opisthe. It undergoes transverse binary fission during the favorable condition.
• So, the correct answer is "(a), (c) and (d)'.