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Q.

Write briefly about the different types of ovules.

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Detailed Solution

* Based on the position of micropyle and Funiculus ovules are of different types.
Orthotropous ovule :
* It is straight ovule where micropyle, chalaza, funiculus are arranged on same vertical line.
Eg: Polygonum
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Anatropous ovule :
* It is an inverted ovule. Micropyle lies close to the funiculus. Raphe present. Degree of curvature of body of ovule is 180°.
Eg : Sunflower
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Campylotropous ovule :
* Body of the ovule placed right angle to the funiculus. Embryo sac is slightly curved.
Eg : Pea, Beans.
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