Question

All cells of sex organs can form gametes in
(A) Algae
(B) Bryophyta
(C) Pteridophyta
(D) Gymnosperm

Answer 1

Hint: In the sexual reproduction, the male and the female gametes of the organism join to produce the new young ones. These gametes are produced by the reproductive organs. In plants, the pollen grains are produced in the male reproductive organ anther and the ovule is produced by the female reproductive organ, ovary

Complete answer:
In sexual reproduction, there is the ability of the organisms to transmit its hereditary material to the next generation. The gymnosperms do not undergo sexual reproduction since they do not possess flowers. They produces spines and the cones by the asexual means of reproduction. The bryophytes reproduce both sexually and asexually. The spores are produced from the bryophytes plants and transmit through the water and join together to form the gametes.

But not all the cells produce gametes. The pteridophytes undergo the hidden reproduction by means of the spores. But all the species of the algae undergo the reproduction. This is because all the cells of the algae are haploid in nature. These undergo the mitosis cell division to produce the zygote and not the meiosis to produce the diploid cells. Hence these have the longest lifespan.

Thus the correct answer is option (A).

Note:Reproduction is affected by three fundamental techniques as isogamy, anisogamy and the oogamy. In isogamy combination happens between two morphologically indistinguishable gametes. After the combination of the gametes a zygote is shaped. The germination of zygote may shift in various algae however as a rule the substance gap to shape zoospores.