Question

Male gametophyte of angiosperms is …..
A) Another lobe
B) Pollen before germination
C) Pollen after germination
D) Embryo Sac

Answer 1

Hint: Angiosperm have branches, roots and leaves. Angiosperm eggs are fertilised and develop into an ovarian seed that is normally found in a flower. In angiosperms, the female reproductive organ is named pistil or is also recognized as a carpel, and the male reproductive organ is called the stamen.

Complete answer:
There are two haploid nuclei in angiosperm male gametophytes, namely the germ nucleus and the nucleus of the tube. It is composed of the pollen grain or microspore within the exine. Female gametophytes of flowering plants grow inside the ovum known as megaspore. It is located within the ovary at the base of the flower pistil. The gametophyte-producing egg is recognised as a megagametophyte and the gametophyte-producing sperm as a microgametophyte.

The microgametophyte in seed plants is called pollen. When the pollen grains leave the sporangium, seed plant microgametophytes consist of two to three cells. Within the megaspore of current seedless vascular plants and within the megasporangium in a cone or flower in seed plants, the megagametophyte grows. T

he microgametophyte (pollen grain) flies in seed plants to the vicinity of the egg cell (carried by a physical or animal vector) and by mitosis releases two sperm. The roles of gametophytes are the development of sperm cells and female cells, and their union in fertilisation. In flowering plants, the male gametophyte is the pollen grain and the female gametophyte is the embryo sac. The male gametophyte inside the anther completes its early development.

Thus the correct answer is option ‘C’ i.e, pollen after germination.

Note: In the life cycle, the gametophyte is a stage that is present in all plants and some algae species. The primary role of gametophytes is to generate gametes. The gametes formed are haploid reproductive cells, such as eggs and sperm.