Which of the following shows a reduction of chromosomes by half?
Male gametophyte to flagellated sperm
Sporophyte to spores
Male gametophyte to spores
Female gametophyte to zygote

Respuesta :

"Sporophyte to spores" is the one among the following choices given in the question that shows a reduction of chromosomes by half. The correct option among all the options that are given in the question is the second option. I hope that this is the answer that has actually come to your desired help.

Answer: The correct answer is-  

A sporophyte can be described as the multicellular, diploid phase in the life cycle of plants and alga.

It is the dominant phase in higher plants ( such as angiosperms and gymnosperms) and undergoes alternation of generation with a haploid, gametophyte phase.

Sporophyte produces haploid spores ( having half the number of chromosome as their diploid parent cell) by a process of cell division called meiosis ( also termed as reductional cell division)

The spores fuse to form a dipolid zygote that undergoes mitotic division to produce the sporophyte again.

On the contrary, male and female gametophyte are already haploid.

Thus, second option is the right answer.