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Which of the following after fertilisation grows rapidly and ripens to form a fruit. Meanwhile, the petals, sepals, stamens, style and stigma may shrivel and fall off?
Ovule
Ovary
Gynoecium
Pistil
Ovary
After double fertilisation in angiosperms, the ovary develops and matures into the fruit, while the ovules inside transform into seeds. The other floral parts like petals, sepals, stamens, and the style and stigma typically wither, shrivel, and fall off as they are no longer required for the developmental process.
After double fertilisation in angiosperms, the ovary develops and matures into the fruit, while the ovules inside transform into seeds. The other floral parts like petals, sepals, stamens, and the style and stigma typically wither, shrivel, and fall off as they are no longer required for the developmental process.
Think of the flower as a nursery that provides protective gear and support; once the 'baby' (the seed) is successfully created inside the 'cradle' (the ovary), the support structures are removed to focus resources on the growth of the fruit.
O-O-F: Ovary тЖТ Ovule тЖТ Fruit (the order of development)
OvaryтЖТFruit
OvuleтЖТSeed
Fertilisation triggers a hormonal shift in the plant. The zygote develops into the embryo, and the primary endosperm nucleus develops into the endosperm. Simultaneously, the plant growth hormones (auxins and gibberellins) cause the ovary wall (pericarp) to expand and differentiate, transforming it into the fruit to protect the developing seeds.
The wall of the ovary develops into the pericarp of the fruit.
The integuments of the ovule develop into the seed coat.
Fertilisation stimulates the transition from a floral organ to a reproductive fruit structure.
Protects the developing embryos (seeds) from environmental stress.
Aids in seed dispersal through various mechanisms like animals or wind.
Agricultural fruit production
Botanical classification of fruits
In some plants, parts like sepals may persist (e.g., in tomato or brinjal).
Option A (Ovule) matures into the seed. Option C (Gynoecium) is the entire female reproductive whorl. Option D (Pistil) is synonymous with the carpel unit.
B is correct тАФ After fertilisation, the ovary undergoes physiological changes to ripen into a fruit.
Remember the simple rule: 'Ovary to Fruit, Ovule to Seed'. This is a high-frequency question in competitive biology exams.
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