CBSE Class 10 Science 2020 · Paper 31/1/1 · Question 19
Define the term pollination. Differentiate between self pollination and cross pollination. What is the significance of pollination?
Answer
Pollination moves pollen from anther to stigma, within one flower (self) or to another flower (cross), and makes fertilisation possible.
Pollination is the transfer of pollen grains from the anther (of the stamen) to the stigma (of the carpel).
Self pollination: pollen is transferred from the anther to the stigma of the same flower.
Cross pollination: pollen is transferred from the anther of one flower to the stigma of another flower, by agents such as wind, water or animals.
Significance: pollination brings the male germ-cell to the female part of the flower, so that fertilisation can take place and a zygote is formed; the zygote grows into the embryo and the ovule develops into a seed.
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