Distinguish between pollination and fertilisation. Mention the site and product of fertilisation in a flower. Draw a neat, labelled diagram of a pistil showing pollen tube growth and its entry into the ovule.
Difference between pollination and fertilization:
Pollination | Fertilization |
The transfer of pollen grains from the anther of a flower to the stigma of the same or another flower is known as pollination. | The fusion of male and female gametes to form zygote is known as fertilisation. |
It is a physical process; no new substance is formed. | It is a biological process in which a new structure called zygote is formed. |
It is two types- self-pollination and cross- pollination. | The modes of fertilisation in nature are internal fertilisation and external fertilisation. |
Ovary is the site of fertilization and embryo is the product of fertilization.
The following figure shows fertilization in plant:
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