Antifertilizin is secreted by

A. fertilized egg

B. spermatozoa

C. unfertilized egg

D. egg membranes

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  1. Cleidoic eggs are found in
  2. In frog's egg the divisoin is
  3. Human egg is
  4. The substance fertilizin is secreted by
  5. During fertilization the spermatozoa penetrate through the egg membranes with the help of
  6. The sperm produces substances of enzymatic nature of sperm lysin. In mammals, it is called
  7. The first phase in the sexual reproduction of organisms is
  8. Spermatoliosis is a process by which
  9. When the eggs are released from the ovary of frogs they are at the
  10. The nervous system, epidermis and hairs and nails are derivatives of
  11. During the development of frog, the ar-chenteron is formed in
  12. The cellular movements during gastrula-tion are called
  13. Antifertilizin is secreted by
  14. Blastopore in frogs development occurs in
  15. Which one has the capacity to reproduce without fertilization of eggs ?
  16. For fertilization of the frog's egg
  17. Sexual reproduction in larval condition is known as
  18. The allantoic vesicle arises from
  19. Laternal line system of sense organs present in the skin of tadpole larva
  20. Oogonia entering the growth phase of oogenesis is called
  21. In forg, the sperms released from the testis take the following route to reach the ureter:
  22. During cleavage, the embryo
  23. In frog, gastrulation is completed by
  24. If an unfertilized frog's egg is pricked with a micro-needle, it will
  25. Grey cresent is present in
  26. Which of the following develops from ectoderm ?
  27. The intestine of tadpole is
  28. Meroblastic cleavage is found in
  29. The process of synthesis of yolk by the oocyte is termed
  30. How many cleavages are completed in 16 cell stages of frog's egg ?