Q.

Choose the correct position of floral parts over thalamus in china rose plant.

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a

Gynoecium is present at the centre with ovary partially above and partially below to other floral parts. 

b

The margin of thalamus grows upward enclosing the ovary completely and getting fused with it

c

The gynoecium occupies highest position while the other parts are situated below it 

d

Gynoecium is situated at the centre and other parts of the flower are located on the rim of thalamus almost at the same level

answer is C.

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Detailed Solution

In china rose, flowers are hypogynous with superior ovary. In the hypogynous flower the gynoecium occupies the highest position while the other parts are situated below it. 

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