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After fertilisation, which of the following develops a tough coat, is gradually converted into a seed and the zygote divides several times to form an embryo within it?
Ovary
Gynoecium
Ovule
Pistil
Ovule
After fertilisation, the ovule develops a tough seed coat and is converted into a seed, while the zygote divides repeatedly to form the embryo. The ovary subsequently ripens to form the fruit.
After fertilisation, the ovule develops a tough seed coat and is converted into a seed, while the zygote divides repeatedly to form the embryo. The ovary subsequently ripens to form the fruit.
Think of the ovule as a 'protective capsule' (the seed) that holds the 'blueprint' (the embryo) inside, while the ovary acts like the 'fruit packaging' that encloses the seeds for protection and dispersal.
O-O-O: Ovary to fruit, Ovule to seed, O-gamete to zygote.
n+n=2n тАФ representing the fusion of haploid gametes to form a diploid zygote.
ZygotemitosisтАЛEmbryo тАФ growth process of the plant embryo.
Fertilisation involves the fusion of the male gamete with the egg cell inside the ovule, forming a zygote (2n). The integuments of the ovule harden to form the testa and tegmen (seed coat), while the zygote undergoes mitosis to develop into the multicellular embryo. Simultaneously, hormonal changes trigger the ovary wall (pericarp) to mature into fruit tissues.
The ovule is the structure that becomes the seed after fertilisation.
The ovary is the structure that becomes the fruit after fertilisation.
The seed coat (testa) develops from the integuments of the ovule to protect the delicate embryo.
The embryo is the precursor to the new plant, containing the radicle and plumule.
Protects the embryo from harsh environmental conditions.
Facilitates seed dispersal through fruit development.
Botanical studies of angiosperm reproduction.
Agricultural science for crop breeding and seed production.
Option A (Ovary) develops into the fruit, not the seed.
Option B (Gynoecium) refers to the entire female reproductive organ (pistil), not the specific site of seed formation.
Option D (Pistil) is the collective term including ovary, style, and stigma, and is not the site of seed conversion.
C is correct тАФ The ovule is the specific structure within the ovary that transforms into a seed following the process of fertilisation.
Always remember the 'O-O-S-F' rule: Ovule to Seed, Ovary to Fruit. This is a classic, high-frequency question in competitive exams.
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