NEET Botany Biological Classification Questions Solved

(2) Paramecium is a genus of ciliated protozoa, abundant in freshwater and much studied in terms of nuclear/cytoplasmic relations. P. aurelia is the species most studied, Paramecium species are noted for their possession of two nuclei per cell, a large polyploid vegetative nucleus - the macronucleus and a small, diploid non-transcribed micronucleus, active only during conjugation.