InterviewSolution
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InterviewSolution
| 1. |
Triple fertilization |
| Answer» The\xa0fusion\xa0involving two polar nuclei and a sperm nucleus that occurs in double\xa0fertilization\xa0in a seed plant and results in the formation of the endosperm.\xa0The flower may be unisexual that is, it contains either stamens or carpels or bisexual which contains both stamens and carpels. Stamen produces pollen grains that are yellowish in colour. The ovary contains ovules and each ovule has an egg cell. When a pollen grain falls on the stigma of the carpel, it bursts open and grows into a pollen tube downwards through the style towards the female gamete in the ovary. A male gamete moves down the pollen tube and enters the ovule in the ovary. The tip of the pollen tube bursts open and male gamete comes out of the pollen tube which combines with the nucleus of the female gamete present in the ovule to form a fertilised egg called zygote. This is called double fertilization.\xa0Triple fusion\xa0is a\xa0fusion\xa0that involves a sperm nucleus and two polar nuclei which occurs in the double\xa0fertilization\xa0in a seed-bearing\xa0plant\xa0that results in the endosperm formation.\xa0 | |