Cleidoic eggs are found in

A. birds

B. mammals

C. insects

D. molluscs

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  1. During normal development the activation of the egg is achieved by
  2. When the eggs are released from the ovary of frogs they are at the
  3. During fertilization the spermatozoa penetrate through the egg membranes with the help of
  4. The substance fertilizin is secreted by
  5. Laternal line system of sense organs present in the skin of tadpole larva
  6. The nervous system, epidermis and hairs and nails are derivatives of
  7. For fertilization of the frog's egg
  8. Blastopore in frogs development occurs in
  9. Human egg is
  10. Development of egg without fertilization is termed as
  11. The cellular movements during gastrula-tion are called
  12. The sperm produces substances of enzymatic nature of sperm lysin. In mammals, it is called
  13. Mammalian placenta is
  14. The formation of the neural tube is known as
  15. In frog, gastrulation is completed by
  16. A true coelom is covered by
  17. During metamorphosis, the disappearance of larval organs is called
  18. The allantoic vesicle arises from
  19. Which of the following develops from ectoderm ?
  20. Metamorphosis is a characteristic feature of
  21. During the development of frog, the ar-chenteron is formed in
  22. In forg, the sperms released from the testis take the following route to reach the ureter:
  23. If an unfertilized frog's egg is pricked with a micro-needle, it will
  24. The formation, development and matura- j tion of the female gamete is called
  25. Sexual reproduction in larval condition is known as
  26. Which of the following do not show parental care over their young ones ?
  27. In frog's egg the divisoin is
  28. In order to become structurally and functionally a spermatozoan, each spermatid has to undergo a process…
  29. How many cleavages are completed in 16 cell stages of frog's egg ?
  30. The intestine of tadpole is