Question

3. Which of the following group of plant hormones help in the growth of the stem?
(a) Auxins and cytokinins
(b) Gibberellins and abscisic acid
(c) Auxins and gibberellins
(d) None of the above​

Answer 1

Explanation:

Auxin and gibberellin

Answer 2

Option (c) is the right answer.

Auxins and gibberellins are the plant hormones which help in the growth of the stem.

- Auxin are introduced in those parts of plants which are immature as they lead to growth in that particular part of the plant.

- This hormone is also used to elongate the plant cells of any particular plant.

- Gibberellins also plays a vital role in stimulating the growth of the stem and other parts of the plant.

- These hormones need to be introduced in plants only in small amount as they generate a very fast response required for growth.