In angiospermsm, each pollen grain produces to male cells. What do these sperm do in the fertilisation of flower?

Pollen grains are male gametes.

How do pollen grains pollute the air?

IF one pollen grain produces two male gametes how many pollen grains are needed to fertillize 10 Ovules?

Where do pollen grains germinate ?

Where do pollen grains germinate ?

why are pollen grains produced in large quantity in wind -pollinated flowers?

The pollen grains produced in stamen are male reproductive cells.

Even though each pollen grain has 2 male gemetes, why at least 20 pollen are required to fertilise, 20 ovules in carpel?

(i) Draw a diagram showing germination of pollen on stigma of a flower. (ii) Label pollen grain, male germ cells, pollen tube and female germ cell in the above diagram. (iii) Define fertilization in plants.