NEET BIOLOGY

Detailed explanation-1: -Sexual reproduction in Paramecium is by various methods. In conjugation, two complementary paramecia (syngen) come together and there is a transfer of genetic material. An individual has to multiply asexually 50 times before reproducing by conjugation.

Detailed explanation-2: -Through a process called conjugation, two paramecia line up side by side and then fuse together. Where they fuse is called a cytoplasmic bridge. The diploid micronucleus undergoes meiosis and forms four micronuclei. All but one of the cell’s micronuclei disintegrates.

Detailed explanation-3: -The ciliated protozoa are a distinct group of protists characterized by (1) the presence of cilia derived from kinetosomes with three fi brillar associates; (2) nuclear dimorphism; and (3) conjugation as a sexual process.

Detailed explanation-4: -Some protists can undergo either binary fission or conjugation for their reproduction.

Detailed explanation-5: -In ciliates such as Paramecium, conjugation is a sexual phenomenon that results in genetic recombination and nuclear reorganization within the cell. During conjugation, two Paramecia of a compatible mating type come together and form a bridge between their cytoplasms.