how to draw sunflower

In a transverse section of a sunflower root :

How many plants contain alternate phyllotaxy from given examples - Alstonia, China rose, Guava , Mustard, Calotropis and sunflower

The solar tracking (moving in the sun's direction) of the sunflower is called "______" .

Inflorescence and fruit of sunflower is :-

The origin of sunflower is believed to be in

Sunflower is not a flower. Explain.

In Asteraceae / sunflower , the fruit is