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Grey cresent is present in

A. zygote of frog

B. brain of rabbit

C. eye of frog

D. retina of cockroach

Please do not use chat terms. Example: avoid using "grt" instead of "great".

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  1. Antifertilizin is secreted by
  2. The cellular movements during gastrula-tion are called
  3. The intestine of tadpole is
  4. During metamorphosis, the disappearance of larval organs is called
  5. The substance fertilizin is secreted by
  6. Embryo sac in a hen's egg is formed by
  7. The process of synthesis of yolk by the oocyte is termed
  8. In frog's egg the divisoin is
  9. For fertilization of the frog's egg
  10. In frog, gastrulation is completed by
  11. Which of the following develops from ectoderm ?
  12. The allantoic vesicle arises from
  13. When the eggs are released from the ovary of frogs they are at the
  14. Oogonia entering the growth phase of oogenesis is called
  15. During the development of frog, the ar-chenteron is formed in
  16. During fertilization the spermatozoa penetrate through the egg membranes with the help of
  17. The sexual embrage of the male and female frogs is called
  18. In the growing oocyte, the nucleus enlarges in size due to an increase in
  19. Grey cresent is present in
  20. Which one has the capacity to reproduce without fertilization of eggs ?
  21. During normal development the activation of the egg is achieved by
  22. If an unfertilized frog's egg is pricked with a micro-needle, it will
  23. Laternal line system of sense organs present in the skin of tadpole larva
  24. Mammalian placenta is
  25. Sexual reproduction in larval condition is known as
  26. Metamorphosis is a characteristic feature of
  27. A true coelom is covered by
  28. Spermatoliosis is a process by which
  29. In order to become structurally and functionally a spermatozoan, each spermatid has to undergo a process…
  30. Constructive change in the development of frog from tadpole is