During the development of frog, the ar-chenteron is formed in
early blastula
late blastula
early gastrula
lategastrula
- Which of the following does not show metamorphosis ?
- The nervous system, epidermis and hairs and nails are derivatives of
- Laternal line system of sense organs present in the skin of tadpole larva
- In the human female, the primary oocytes remain small without any growth for
- Sexual reproduction in larval condition is known as
- Oral contraceptives check
- In forg, the sperms released from the testis take the following route to reach the ureter:
- Which of the following do not show parental care over their young ones ?
- If an unfertilized frog's egg is pricked with a micro-needle, it will
- Metamorphosis is a characteristic feature of
- Human beings are
- 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 first phase in the sexual reproduction of organisms is
- The formation, development and matura- j tion of the female gamete is called
- The substance fertilizin is secreted by
- Which of the following develops from ectoderm ?
- Blastopore in frogs development occurs in
- During normal development the activation of the egg is achieved by
- During metamorphosis, the disappearance of larval organs is called
- The process of synthesis of yolk by the oocyte is termed
- Development of egg without fertilization is termed as
- Which one has the capacity to reproduce without fertilization of eggs ?
- A freshly unfertilised egg of hen contains
- Constructive change in the development of frog from tadpole is
- Spermatoliosis is a process by which
- Embryo sac in a hen's egg is formed by
- Meroblastic cleavage is found in
- The formation of the neural tube is known as
- The intestine of tadpole is