Reserpine is obtained from which part of the plant?

Which of the following satisfies the basic requirement of carbohydrate,protein,fat,and vitamin in the human diet to a greater extent?

Pungency of chilli is due to

Which of the following is the 'New World' spice that has become an essential part of Indian cuisine?

From which plant are flax fibers obtained?

$A$ commonly used masticator called 'supari' is obtained from the plant