Last seen: May 7, 2021
When the development of the foetus is complete, the mother gives birth to the young one.
The stage of the embryo in which all the body parts are identifiable is called a foetus.
The zygote divides repeatedly to form an embryo.
External fertilisation.
Internal fertilisation.
Yes, the egg is also a single cell.
The female reproductive organs are a pair of ovaries, oviducts and the uterus.
Yes, the sperm is a single cell with all the cell components.
Diagram of sperm. 2s.png
A sperm has a head, a middle piece and a tail.
The male gametes produced by the testis are known as sperms.
Testis produce the male gametes.
The male reproductive organs are a pair of testis, sperm ducts and a penis.
Embedding of the embryo takes place in the wall of the uterus.
(b) metamorphosis
(a) in female body.
We observe that Hydra use regenerative cells for developing new individuals in the process of budding. Also buds develop in Hydra as outgrowth due to ...