question_answer 19)

Meiosis occurs in organisms during (a) sexul reproduction'                                                  (b) vegetative reproduction (c) Both (a) and (b)                                                          (d) None of these

Answer:

                (a) Meiosis occurs in sexually reproducing organisms to reduce the chromosome number to half before their gametes unit, so, as to maintain the constant chromosome number (2n) in the progery. Vegetative reproduction is a kind of asexual reproduction occurring in plants and does not involve the formation and fusion of gametes.