Draw a labelled diagram of L.S. of flower. What is the function of anther?

Draw a labelled diagram which shows the process of fertilization in plants. Distinguish between a gamete and zygote.

(a) What is a clone? Why do offspring formed by asexual reproduction exhibit remarkable similarity?

(b) What is the basis for evolution? Where is the zygote located in the flower after fertilization?

In human males, the tests life in the scrotum, because it helps in the:

Which among the following is not the function of testes at puberty?

(i) formation of germ cells

(ii) secretion of testosterone

(iii) development of placenta

(iv) secretion of oestrogen