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Question

In which of the following kinds of ovules, the embryo sac is horse-shoe shaped?

A
Orthotropous ovule
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B
Hemitropous ovule
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C
Amphitropous ovule
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D
Circinotropous ovule
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Solution

The correct option is C Amphitropous ovule
The embryo-sac is the female gametophyte borne within the ovule. The embryo-sac contains the egg cell, synergids, antipodals and the central cell. The embryo-sac acquires the horseshoe shape in amphitropous ovules because these ovules have a pronounced curvature. These are seen in the family Butomaceae.
Hence, the correct answer is 'Amphitropous ovule'

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