Question

Choose the right from the following.
i. In light, hormone auxin, helps the cells to grow longer in plants .
ii. Plant hormone gibberellins helps in growth of a stem.
iii. Cytokinins inhibits cell division.
iv. Abscisic acid promote growth in plants.

• A. Option i and iii are correct.
• B. Option ii and iv are correct.
• C. Option i and ii are correct.
• D. Option i and iv are correct.

Answer 1

Answer: (C)

Option i and ii are correct.

Plants have certain chemical substances in them that transmit messages for maintaining different functions of the body.

One of the important function of auxins is that they help in the growth of the plants in the din growth like the growth of the stem.

Gibberellins help in the growth of different plant parts like stems.

Cytokinins help in cell division and differentiation, and so option iii is incorrect.

Abscisic acid retards plant growth, so option iv is also incorrect.

So, option C " Option I and ii are correct" is the correct option.