HORTICULTURE

Detailed explanation-1: -The fertilised ovule goes on to form a seed, which contains a food store and an embryo that will later grow into a new plant. The ovary develops into a fruit to protect the seed.

Detailed explanation-2: -The stigma can receive pollen also during the flowering, when the spikelet opens. Within 2 to 3 minutes, the pollen left on stigma starts to germinate, to grow pollen tube toward the egg cell. Pollen tubes are the pathways for sperm to reach the egg. The pollen tube reaches the ovule.

Detailed explanation-3: -Self-pollination occurs when the pollen from the anther is deposited on the stigma of the same flower, or another flower on the same plant. Cross-pollination is the transfer of pollen from the anther of one flower to the stigma of another flower on a different individual of the same species.

Detailed explanation-4: -After pollination, the male gametes fuse with the egg cell and form the secondary nucleus that undergoes double fertilisation. After fertilisation, the ovule then develops into a seed, which eventually encloses an embryo inside the seed coat. The ovary then develops into a fruit.