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15. Describe the arrangement of floral members in relation to their insertion on thalamus.

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There can be three types of arrangements of floral members in relation to their insertion on the thalamus. These are as follows:

1. Hypogynous – Ovary occupies the highest position while the other parts are situated below the ovary. The ovary in such case is called superior. Eg. Mustard, brinjal and China rose. Flowers with this arrangement are called hypogynous flowers. 

 2. Perigynous -In this arrangement, the gynoecium is situated at the centre and other parts are on the rim at the same height. Such ovary is called half-inferior and flowers are called perigynous flowers. 

 3. Epigynous- In this arrangement, the ovary is situated below all the other parts. The ovary, in this case, is said to be inferior while the flower is called epigynous flower. 

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Sonika

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