Apr 13, 2018 · Paramecium reproduction takes place by both forms asexual and sexual, out of which the former type is predominant. Sexual reproduction in paramecium is called conjugation, while asexual reproduction is known as binary fission.Author: Ningthoujam Sandhyarani.
The functional micronucleus in each exconjugant divides into two and the conjugant divide by binary fission into two daughter paramecia from each exconjugant. The macronuclei are shared equally. Again the micronuclei of two daughter paramecia divide into two and macronuclei are again shared and later the paramecia divide again to produce 8.
SEXUAL REPRODUCTION: CONJUGATION. In Paramecium, Conjugation is a form of sexual reproduction. It is a temporary union of two individuals of same species for mutual exchange of genetic materials. Continuous multiplication by binary fission is interrupted by conjugation as it is necessary for the survival and rejuvenation of the race.
However, another study in 2017 suggested that the Paramecia can only learn to associate the bright side of its swimming medium to electric current and not the dark side. The same study suggested a molecular mechanism for learning in the Paramecia. Reproduction and sexual phenomenaClass: Oligohymenophorea.