Cereals and millets are mainly deficient in which amino acids?

1. Sulphur containing amino acids-methionine and cysteine
2. Lysine
3. Trypotophan
4. Both (2) & (3)

The correct option is 4.
A cereal is a grass, a member of the monocot family Poaceae, cultivated for the edible components of its grain (botanically, a type of fruit called a caryopsis), composed of the endosperm, germ, and bran. Cereal grains are grown in greater quantities and provide more food energy worldwide than any other type of crop; they are therefore staple crops.