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In which of the animals, the fertilization occurs externally in water ?

A. Hydra

B. Earthworm

C. Frog

D. Cockroach

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  1. Rupturing of follicles and discharge of ova is known as
  2. The human sperm was first seen and described by
  3. The hormone which shows a single mid cycle peak in the human female is
  4. In the human menstrual cycle, ovulation occurs around
  5. A woman's fertility ceases at about 49-55 years. This is known as
  6. The testis are found in the abdomen in
  7. One of the following accessory glands in the male reproductive system produces secretions that neutralise…
  8. The simplest type of placenta found in man is
  9. The structure formed after release of ova from Graffian follicles and secretory in nature, is
  10. Graffian follicles are characteristically found in the
  11. The testes secrete a group of hormones called
  12. Gubernaculun connects
  13. In which of the animals, the fertilization occurs externally in water ?
  14. Amniotic fluid protects the foetus from
  15. Cells of Sertoli are found in
  16. Sertoli cells are located in
  17. Allantois of the mammalian embryo helps in
  18. Fertilizers are substances emitted from
  19. The part of reproductive system in male which neither produces hormones nor sperms is
  20. In rabbit, the sperms are stored and nourished in
  21. bartholine glands are found and associated with
  22. Gestation period in man is a about
  23. Which of the following animals are hermaphrodites?
  24. In the testis of rabbit, the hormone secreting cells are
  25. The sperm count increases
  26. The region where the sperm enters egg is called
  27. Cryptorchidism is a condition in which testes are
  28. The bidder canals help to pass out
  29. One of these is polyestrous
  30. The structure that attaches testis to dorsal body wall is