I can answer when you say if you are talking about cells or no
The process of the development of reproductive cells in males is called Spermatogenesis. Spermatogenesis develops immature germ cells into mature sperm cells. Oogenesis is the process of the development of reproductive cells in females. Fertilization happens when the sperm and egg cells unite.
B. is a protective structure made of cellulose fibrils
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The answer is the parafollicular cells :)
There are many answers to your question but one way is the evaporation cycle.