. Define the terms pollination and fertilization. Draw a diagram of a pistil showing pollen tube growth into the ovule and label the following:


pollen grain, male  gamete, female gamete, ovary.

 

Best Answer

Ans. Pollination: Pollination is the transfer of pollen grains from the anther of a stamen stigma of a carpel. Pollination occurs only in plants. Pollination can occur in two ways:

(a) self pollination and

(b) cross pollination. It is a physical process.

Fertilisation: The fusion of a male gamete with a female gamete to form zygote is called fertilisation. Fertilisation occurs in plants as well as in animals. Fertilisation is also of two types:

(a) external fertilisation and 

(b) internal  fertilisation. It is a biochemical process.

pollination and fertilization

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