A farmer notices that storing ripe mangoes with unripe ones speeds up the ripening process. The phytohormone primarily responsible for this phenomenon is:

1. Auxins
2. Cytokinins
3. Gibberellins
4. Ethylene

Assertion (A): Oxygen is produced during light dependent reactions of photosynthesis.

Reason (R): Oxygen is released as a byproduct during photolysis.

1. (A) is true and (R) is false.
2. (A) is false and (R) is true.
3. Both (A) and (R) are true and (R) is the correct explanation of (A).
4. Both (A) and (R) are true but (R) is not the correct explanation of (A).

The diagram given below is that of a Neutrophil. The function is …………… :

1. Secreting hormone
2. Transporting food
3. Phagocytosis
4. Producing antibodies

Assertion (A): Pituitary gland is known as the master gland.

Reason (R): It regulates the activities of other exocrine glands.

1. (A) is true and (R) is false.
2. (A) is false and (R) is true.
3. Both (A) and (R) are true and (R) is the correct explanation of (A).
4. Both (A) and (R) are true but (R) is not the correct explanation of(A).