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.
Pollination: It is a type of asexual reproduction in which the pollen grains are transferred from the anther of a stamen to stigma of a carpel. Pollination is of two types:
(a) self-pollination
(b) cross pollination
Fertilisation is a mode of sexual reproduction in which the male gamete is fused with the female gamete to form zygote. This process occurs in both plants and animals. There are two types of fertilization which are as follows:
(a) External fertilisation
(b) Internal fertilisation.
The diagram of a pistil showing pollen tube growth into the ovule is as follows:
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