Question

34. Write appropriate answers for the life cycle of an alga having haploid body.
(a) Type of division involved in forming gamete.
(b) Ploidy of zygote and gamete.​

Answer 1

• A) meiosis
• b)Zygote is formed by syngamy, so it is diploid in nature, and primary endosperm nucleus is formed by the fusion of secondary diploid nucleus with one of the male gamete, so it is triploid in nature

Answer 2

In haploid organisms the gametes are produced by mitosis.

a) Mitosis

b) Ploidy of zygote 2n

Ploidy of gamete n

In organisms like haploid algae and some fungi , meiosis occurs in zygote or zygospore which is called zygotic meiosis.