What is complete metamorphosis ?
The transformation of the larva into an adult through drastic changes is called complete metamorphosis. the life cycle of the silkworm (egg → larva or caterpillar → pupa → adult)
What is metamorphosis ?
The transformation of the larva into an adult through drastic changes is called metamorphosis.
What is an oviparous animals ?
Those animals which lay eggs are called oviparous animals.
What is viviparous animals ?
Some animals give birth to young ones . The animals which give birth to young ones are called viviparous animals.
What is foetus ?
The stage of the embryo in which all the body parts can be identified is called a foetus.
What is embryo ?
. The cells then begin to form groups that develop into different tissues and organs of the body. This developingstructure is termed an embryo. The embryo gets embedded in the wall of the uterus for further development
What is external fertilisation ?
Solution : The fusion of a male and a female gamete takes place outside the body of the female is called external fertilisation. It is very common in aquatic animals such as fish, starfish, etc.
Have you heard of test tube babies?
Solution: Have you heard of test tube babies?some women’s oviducts are blocked. These women are unable to bear babies because sperm cannot reach the egg for fertilisation. In such cases, doctors collect freshly released eggs and sperm and keep them together for a few hours for IVF or in vitro fertilisation (fertilisation outside the body). …
What is an internal fertilisation ?
Solution : Fertilisation which takes place inside the female body is called internal fertilisation. Internal fertilisationoccurs in many animals including humans, cows, dogs and hens.
What is fertilised egg or zygote ?
Solution : During fertilisation, the nuclei of the sperm and the egg fuse to form a single nucleus.This results in the formation of a fertilised egg or zygote