Plant Reproduction Archives

Which one of the following is the correct sequence of events during sexual reproduction in plants?

[amp_mcq option1=”Seedling, formation of embryo, pollination, fertilization, division of zygote” option2=”Formation of embryo, seedling, pollination, fertilization, division of zygote” option3=”Pollination, fertilization, division of zygote, formation of embryo, seedling” option4=”Seedling, formation of embryo, division of zygote, pollination, fertilization” correct=”option3″]

This question was previously asked in

UPSC CDS-1 – 2020

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Sexual reproduction in flowering plants typically begins with pollination, which is the transfer of pollen. This is followed by fertilization, where the male gamete (from pollen) fuses with the female gamete (in the ovule) to form a zygote. The zygote then undergoes cell division and development (embryogenesis) to form an embryo. The embryo is enclosed within a seed, and the seed germinates under favorable conditions to grow into a seedling.

– The correct sequence starts with the interaction of gametes or their carriers: Pollination.
– Fusion of gametes: Fertilization.
– The result of fertilization: Zygote.
– Development from zygote: Division of zygote leading to embryo formation.
– Subsequent stage: Seedling growth from the seed containing the embryo.

The order presented in option C (Pollination, fertilization, division of zygote, formation of embryo, seedling) correctly represents the major sequential steps from the start of reproduction to the establishment of a new plant from seed. The division of the zygote is the initial step in the formation of the embryo.