The cell of XX embryo secretes _____which drive the body towards female pathway.

Which is the last cell of female sporophytes-

Which cells of areolar tissue secrete white and yellow fibres?

Which cells of testis secrete androgens ?

______involves the transfer of embryo at 8 -celled stage in the fallopian tube of the female.

Which cells secrete dentine?

Fill in the blanks with correct answer(s)/Give the answer in one word only. Name the flies (in Drosophila) in which a part of the body exhibits female characters.

In these animals, the female retain the eggs inside its body after fertillisation and allows the development of embryo inside the body without providing extra nourishment ot the developing embryo as the placenta is absent. Such animlas are called as

From which cells of embryo plumule is produced?

Which cells of ·connective tissue secrete heparin ?

Which cells of Testis secrete testosterone ?