The slimy secretion of the epithelial lining of the various organs is called:

1. Antiseptic
2. Antibodies
3. Both (i) & (ii)
4. Mucus

Which of the following is not a germ-killing secretion?

1. Blood
2. Saliva
3. Tears
4. Sweat

A biology teacher asked her students to give two examples of antiseptics, which can be used to kill germs.

Prerna said: Boric acid and 40% Formalin.

Shreya said: Benzoic acid and Bordeaux mixture.

Rahul said: Carbolic acid and Boric acid.

Rishi said: Mercurochrome and Benzoic acid.

Who were correct ?

1. Prerna and Shreya
2. Shreya and Rahul
3. Rahul and Rishi
4. Rishi and Prerna

Assertion (A): Immunity is the resistance to the onset of a disease after infection by harmful germs.

Reason (R): A body's immunity is maintained by two proteinaceous substances — antigens and antiseptics.

1. A is True and R is False.
2. A is False and R is True.
3. Both A and R are True.
4. Both A and R are False.