Which cellular structure of spermatid forms the acrosome?

Which cellular structure is called "director of the cell"?

Which cellular structure act as: cell circulatory system, protein factories, power houses, kitchens of the cell, ciliated centriole and disposal units.

Acrosome of sperm is found in

Which structure is removed in this figure?

Which type of cell division forms spermatids from secondary spermatocytes?

Which structure is absent in male cockroach?