Which of the following is considered a blood purifier?

Which of the following crops have been brought to India from the New World?

Food grains which provide the most important staple food for man are

Quinine is obtained from the bark of:

Bengal gram or chickpea is obtained from which genus?

$A$ cultivated plant whose seed epidermis produces abundant cellulosic hairs used in the textile industry and the manufacture of fine-quality paper is: