Question

Match the following.

$\begin{array}{cc}\text{Artificial hormones}& \text{Applications}\\ \text{(1) Naphthalene acetic acid}& \text{(A) used in the prevention of ripening of fruits to assist in marketing}\\ \text{(2) 2, 4 - Dichlorophenoxyacetic acid}& \text{(B) used in the production of latex}\\ \text{(3) Synthetic gibberellin}& \text{(C) used as a weedicide to remove unwanted plants}\\ \text{(4) Ethephon}& \text{(D) used in the prevention of dropping of premature fruits}\end{array}$

• A. 1 - A, 2 - C, 3 - D, 4 - B
• B. 1 - D, 2 - B, 3 - A, 4 - C
• C. 1 - D, 2 - C, 3 - A, 4 - B
• D. 1 - D, 2 - B, 3 - C, 4 - A

Answer 1

The correct option is C 1 - D, 2 - C, 3 - A, 4 - B

Plant hormones are artificially synthesized by identifying the chemical structure of the hormones. Some examples are:
(1) Naphtalene acetic acid (NAA) - an artificial auxin that is primarily used in sprouting and to prevent the premature dropping of fruits.
(2) 2, 4 - Dichloropenoxyacetic acid (2.4 - D) - an artificial auxin that is used as a weedicide to remove unwanted plants.
(3) Synthetic gibberllins - used to prevent the ripening of fruits so that they can be preserved for a longer time.
(4) Ethephon - a liquid chemical that converts into ethylene gas when used on rubber trees to increase production of latex.