Vitamin D is synthesized in skin,by the action of sunlight on

Assertion: Deficiency of vitamin D causes bone weakness Reason : Cholecalciferol is synthesised in skin by the action of sunlight

Which vitamin is synthsized in skin cells only in presence of sunlight ?

The one that is synthesized in skin is

Vitamin D is synthesised by one of the following with the help of sunlight

Which vitamin can be synthesized by the human body?

........................ vitamin is synthesized by bacteria present in intestine.