Sexual Reproduction in Flowering Plants — Practice Quiz
ICSE · Class 12 · Biology
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Quick Quiz: Sexual Reproduction in Flowering Plants
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Which of the following is the correct order of floral whorls from outside to inside?
Which layer of the anther wall is the innermost and most nutritive?
Pollination within the same flower is called:
Double fertilisation was discovered by:
Sample Questions
How many cells are present in a mature embryo sac?
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7 cells
A mature embryo sac (Polygonum type) has 7 cells but 8 nuclei. The central cell has 2 polar nuclei, contributing 2 nuclei to the total of 8.
Double fertilisation occurs in gymnosperms.
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False
Double fertilisation is unique to angiosperms (flowering plants). It does not occur in gymnosperms.
Which structure develops from the ovule after fertilisation?
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Seed
After fertilisation, the ovule develops into the seed, and the ovary develops into the fruit (pericarp).
Sporopollenin is deposited on which layer of the pollen grain wall?
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Exine
Sporopollenin is deposited on the exine (outer layer) of the pollen wall via ubisch granules secreted by the tapetum. The intine is made of cellulose and pectin.
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