Question
Sunflower is not a flower. Explain
Solution
Sunflower is not a flower rather a bunch of flowers. In fact, what appears to be a single flower is, in fact, an inflorescence. this type of inflorescence is called capitulum.
The following features of sunflower prove that it is not a flower but an inflorescence.
i. Receptacle is flattened
ii. Many small and sessile florets on the receptacle.
iii. The youngest florets are at centre while the oldest are at the periphery.
iv. There are two kinds of florets in sunflower, called as the ray florets and disc florets.
v. Ray florets are on the rim of the receptacle. These are of yellow colour.
vi. Disc florets are present in the centre. They are bisexual and actinomorphic.
