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After a sperm has entered an ovum in the process of fertilization, entry of further sperms is prevented by

A. development of the vitelline membrane

B. development of the pigment coat

C. condensation of yolk

D. formation of fertilization membrane

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  1. Amnion helps in
  2. After a sperm has entered an ovum in the process of fertilization, entry of further sperms is prevented…
  3. A woman's fertility ceases at about 49-55 years. This is known as
  4. The human sperm was first seen and described by
  5. The female rabbit is
  6. Amnion is an extra-embryonic embrane which develops during the embryonic development of
  7. One of these is polyestrous
  8. Fertilizers are substances emitted from
  9. The hormone which shows a single mid cycle peak in the human female is
  10. The simplest type of placenta found in man is
  11. Cryptorchidism is a condition in which testes are
  12. Secodary sexual character in man is
  13. The region where the sperm enters egg is called
  14. The structure formed after release of ova from Graffian follicles and secretory in nature, is
  15. One of the following accessory glands in the male reproductive system produces secretions that neutralise…
  16. The structure that attaches testis to dorsal body wall is
  17. The gestation period of rabbit is
  18. Graffian follicles are characteristically found in the
  19. Allantois of the mammalian embryo helps in
  20. The gestation period of elephant is about
  21. In rabbit, the sperms are stored and nourished in
  22. The structure of the male reproductive system that corresponds to oviduct of the female system is
  23. Embryo of a mammal is surrounded by
  24. Placenta is the region, where
  25. The part of reproductive system in male which neither produces hormones nor sperms is
  26. Those person in which testes does not descend into scrotal sac
  27. Sustentacular cells are found in
  28. The testes secrete a group of hormones called
  29. The process of spermatogenesis in human testis is completed in
  30. In the testis of rabbit, the hormone secreting cells are