Vacuole. Amoeba is a unicellular organism formerly grouped under Kingdom Protista. Amoeba in freshwater need contractile vacuole to control input and output of water. (osmosis). Without this structure, ameboid cells will be filled with water and eventually burst.
The answer is A It protects the seed until it matures.
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<span>Spermatozoa are the mature male gametes in many sexually reproducing organisms. Thus, spermatogenesis is the male version of gametogenesis, of which the female equivalent is oogenesis. In mammals it occurs in the seminiferous tubules of the male testes in a stepwise fashion.</span>
Since two females are unable to reproduce. Therefore, if only two females are still alive, the species will become extinct.
Glycolysis and Fermentation <span>occurs in the cytosol of a eukaryotic cell
In short, Your Answer would be Option A
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