Cutting and peeling of onions bring tears to the eyes because of the presence of amino acid in the cell. Onion are the part of genus Allium, along with garlic, chives, leeks and about 400 other cousins. These vegetables absorbs sulfur from earth, which in turn from a class of volatile organic molecules called amino acid sulphoxides.

Correct Option: D

Cutting and peeling of onions bring tears to the eyes because of the presence of amino acid in the cell. Onion are the part of genus Allium, along with garlic, chives, leeks and about 400 other cousins. These vegetables absorbs sulfur from earth, which in turn from a class of volatile organic molecules called amino acid sulphoxides.

Both A and R are true, But R is not the correct explanation of A.

Correct Option: B

Both A and R are true, But R is not the correct explanation of A.

The stimulating effect of tea is due to alkaloid caffeine present in tea. Caffeine is a bitter, white crystalline xanthine alkaloid.

Correct Option: C

The stimulating effect of tea is due to alkaloid caffeine present in tea. Caffeine is a bitter, white crystalline xanthine alkaloid.

Henna (Lawsonia inermis) is a flowering plant used to dye, hair, fingernails, leather and wood. Coloring property of henna is because of Lawson, an organic compound that has affinity for proteins and amino acids in animals.

Correct Option: A

Henna (Lawsonia inermis) is a flowering plant used to dye, hair, fingernails, leather and wood. Coloring property of henna is because of Lawson, an organic compound that has affinity for proteins and amino acids in animals.