Question

Which one of the following shows the last diploid
stage in the life cycle of angiosperms?
(1)Microspore mother cell
(2)Zygote
(3)Central cell
(4)Pollen grain

Answer 1

Answer:

A. Microspore mother cell or MMC is the diploid germ cell which forms microspores (pollen) by the process of microsporogenesis.

B. Zygote is the diploid structure formed by the fusion of male and female gametes.

C. Nucellus is the central part of ovule in which embryo is present. It is triploid.

D. Pollen grain or microspore is the haploid male gamete.

In the life cycle of angiosperms, zygote gives rise to a complete plant. The plant has germ cells which are diploid and produce gametes. The gametes then fuse to form a zygote. Hence, microspore mother cell is the last diploid stage because after that, haploid gametes are formed.

So, the correct answer is 'Microspore mother cell'

Answer 2

Answer:

Which one of the following shows the last diploid

stage in the life cycle of angiosperms?

(1)Microspore mother cell ✅✅✅

(2)Zygote

(3)Central cell

(4)Pollen grain