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Which of the following is the correct sequence of events of sexual reproduction in a flower?(a) pollination, fertilisation, seed, embryo (b) seed, embryo, fertilisation, pollination
(c) pollination, fertilisation, embryo, seed (d) embryo, seed, pollination, fertilisation
Correct Answer: (c) pollination, fertilisation, embryo, seed
Explanation:In flowers, the sequence of events during sexual reproduction can be described as:
(i) Pollination: Transfer of pollen grains from the male anther to the female stigma.
(ii) Fertilization: Involves the fusion of male gametes and female egg cells to form zygote and fusion of polar nuclei with male gamete to form triploid endosperm.
(iii) Embryo formation: Zygote undergoes multiple division through the process of mitosis to produce an embryo.
(iv) Seed formation: Embryo formed from zygote undergoes differentiation to develop plumule, radicle and cotyledons. Endosperm divides to form endospermic tissue that acts as food reserve while integuments surrounding the embryo sac forms seed coat or testa.
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