Correct option is D
Correct Answer: (d) Pollination is transfer of pollen grains from stamen to stigma
Explanation:
- Pollination is the process by which pollen grains are transferred from the stamen (male reproductive part) of a flower to the stigma (female reproductive part).
- This process is crucial for the fertilization and reproduction of flowering plants. Pollination can occur through various agents, including wind, water, insects, or animals.
Other Options:
- While insects often facilitate pollination, the act itself is not merely their visit but involves the transfer of pollen.
- Pollination is the growth of pollen tube in ovule: This refers to fertilization, not pollination.
- Pollination is germination of pollen grains: Pollen germination occurs after pollination when the pollen grain forms a tube to reach the ovule.