Pollination is an important process in sexual reproduction of plants. It is an essential process that…
Pollination is an important process in sexual reproduction of plants. It is an essential process that facilitates fertilisation in plants. Pollinating agents can be wind, water, insects and birds. Several changes take place in the flower after the fertilization has taken place.
(a) Write the main difference between self-pollination and cross-pollination. [1]
(b) Name the part of the flower which attracts insects for pollination. What happens to this part after fertilisation ? [1]
(c) (i) Define fertilisation. What is the fate of ovules and the ovary in a flower after fertilisation ? [2]
Solution
(a) Self-pollination: Transfer of pollen grains from anther to the stigma of the same flower.
Cross-pollination: Transfer of pollen grains from the anther of one flower to the stigma of another flower.
(b) Petals, they dry and fall off.
(c)(i) Fusion of male and female gametes to form a zygote
Ovule – Seed
Ovary – fruit