Which among the following are plant hormones?

(A) Auxin

(B) Gibberellins

(C) Oestrogen

(D) Abscisic acid

Choose the correct answer from the options given below:

Option 1 -> Incorrect because Oestrogen is an animal hormone, not a plant hormone.

Option 2 -> Correct as Auxin, Gibberellins, and Abscisic acid are all plant hormones.

Option 3 -> Incorrect because Oestrogen is an animal hormone involved in reproduction, not a plant hormone.

Option 4 -> Incorrect because it excludes Auxin (a key plant hormone) and includes Oestrogen (an animal hormone).

Hence, Option 2: (A), (B) and (D) only -> Auxin regulates cell elongation and growth, Gibberellins promote stem elongation and germination, and Abscisic acid controls stress responses and dormancy - all are true plant hormones. Oestrogen is an animal steroid hormone and should be excluded -> correct