Question

Fertilisation is the key process in sexually reproducing organisms and it acts as a vital link between two generations. Flowering plants adopt a unique pattern of sexual reproduction as compared to other organisms.

A pistillate flower of a tetraploid angiosperm is pollinated by a pollen grain from a staminate flower of a diploid plant. What would be the level of the ploidy in the endosperm of seeds thus formed?

(i) Explain how does double fertilisation take place in a flowering plant. (ii) Write the fate of the products of double fertilization in these plants.