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