Question

# Is Sunflower a flower?

Solution

## Sunflower is not a flower rather a bunch of flowers. In fact, what appears to be a single flower is in fact a group or bunch of very small flowers called an inflorescence. These flowers are aestived on a receptacle in a special arrangement. This type of inflorescence is called capitulum. Following are the key features of capitulum. $$*$$ Receptacle is flattened. $$*$$ Many small and sessile florets are present on the receptacle. $$*$$ The youngest florets are at the centre while the oldest are at the periphery. $$*$$ There are two kinds of florets in sunflower, viz. ray florets and disc florets. $$*$$ Ray florets are on the rim of the receptacle. These are of yellow colour. $$*$$ Disc florets are in the centre. They are bisexual and actinomorphic. The above features show that sunflower is not a flower but an inflorescence. Biology

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