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In order to become structurally and functionally a spermatozoan, each spermatid has to undergo a process of differentiation called

A. spermiation

B. spermiogenesis

C. spermatogenesis

D. androgenesis

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  1. Blastopore in frogs development occurs in
  2. When the eggs are released from the ovary of frogs they are at the
  3. Meroblastic cleavage is found in
  4. Spermatoliosis is a process by which
  5. In frog's egg the divisoin is
  6. The allantoic vesicle arises from
  7. Cleidoic eggs are found in
  8. If an unfertilized frog's egg is pricked with a micro-needle, it will
  9. Antifertilizin is secreted by
  10. Constructive change in the development of frog from tadpole is
  11. During fertilization the spermatozoa penetrate through the egg membranes with the help of
  12. Which of the following develops from ectoderm ?
  13. Oral contraceptives check
  14. The expulsion of completely developed foetus from the uterus is known as
  15. The sexual embrage of the male and female frogs is called
  16. A freshly unfertilised egg of hen contains
  17. The nervous system, epidermis and hairs and nails are derivatives of
  18. Laternal line system of sense organs present in the skin of tadpole larva
  19. A true coelom is covered by
  20. During normal development the activation of the egg is achieved by
  21. Grey cresent is present in
  22. In forg, the sperms released from the testis take the following route to reach the ureter:
  23. The intestine of tadpole is
  24. During the development of frog, the ar-chenteron is formed in
  25. Which of the following does not show metamorphosis ?
  26. The sperm produces substances of enzymatic nature of sperm lysin. In mammals, it is called
  27. In the human female, the primary oocytes remain small without any growth for
  28. During cleavage, the embryo
  29. The first phase in the sexual reproduction of organisms is
  30. Oogonia entering the growth phase of oogenesis is called