CBSE Class 10 Answered
To be pollinated, pollen must be moved from a stamen to the stigma. When pollen from a plant's stamen is transferred to that same plant's stigma, it is called self-pollination. When pollen from a plant's stamen is transferred to a different plant's stigma, it is called cross-pollination. Cross-pollination produces stronger plants.
An anther is the male part of a flower that has pollen grains on it. A stigma is the female part of a flower that receives the pollen.
Each tiny pollen grain grows into a long tube. These are called pollen tubes. They grow until they come to the ovary. The ovary is the section of a flower where the pollen tubes meet. Now a male gamete from the pollen tube joins the egg from the ovary and a seed is born.
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