Single Choice

In China rose, the flowers are

AActinomorphic, hypogynous with twisted aestivation.
Correct Answer
BActinomorphic, epigynous with valvate aestivation.
CZygomorphic, hypogynous with imbricate aestivation.
DZygomorphic, epigynous with twisted aestivation.

Solution

The China rose flower is complete (bisexual), actinomorphic, pentamerous, hypogynous, and solitary. When a flower can be divided into two equal radial halves in any radial plane passing through the centre, it is said to be actinomorphic. In the hypogynous flower, the gynoecium occupies the highest position while the other parts are situated below it. The ovary in such flowers is said to be superior, e.g., mustard,china rose and brinjal. When sepals or petals in a whorl and if one margin of the appendage overlaps that of the next one and so on as in china rose, ladys finger and cotton, it is called twisted aestivation.

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