Question

Differentiate between ‘self-pollination’ and ‘cross-pollination’. Describe double fertilisation in plants.​

Answer 1

Explanation:

The process of transfers of pollen grains from anthers to the stigma of a flower, but when this process is between the flowers of the same plant than the term is called as self-pollination, while when the transfers are between the flowers of the different plant of same species is called as cross-pollination.

Answer 2

Answer:

Self-pollination occurs when the pollen from the anther is deposited on the stigma of the same flower, or another flower on the same plant. Cross-pollination is the transfer of pollen from the anther of one flower to the stigma of another flower on a different individual of the same species.

Double fertilization involves two sperm cells; one fertilizes the egg cell to form the zygote, while the other fuses with the two polar nuclei that form the endosperm. After fertilization, the fertilized ovule forms the seed while the tissues of the ovary become the fruit.