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Question

Which of the following types of ovules has the micropyle directed in the downward direction?

A
Orthotropous ovule
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B
Circinotropous ovule
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C
Hemianatropous ovule
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D
Anatropous ovule
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Solution

The correct option is D Anatropous ovule
Anatropous ovule has the micropyle directed in the downward direction.
Orthotropous ovule is the one in which the micropyle is pointed in the upward direction. It is completely straight ovule.
Circinotropous ovule also has the micropyle in the upward direction while hemianatropous ovule has the micropyle aligned at right angles to the body of the ovule.

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