Question 11
The main function of abscisic acid in plants is to

(a) increase the length of cells
(b) promote cell division
(c) inhibit growth
(d) promote growth of stem

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Solution

(c) inhibit growth

Abscisic acid is a plant hormone involved in plant processes such as dormancy and environmental stress responses. Abscisic acid promotes seed dormancy and inhibits growth.

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Question 11
The main function of abscisic acid in plants is to

(a) increase the length of cells
(b) promote cell division
(c) inhibit growth
(d) promote growth of stem

Q. Pick up the correct statements.
(A) Cytokinins promote cell division.
(B) Auxins promote growth.
(C) Abscisic acid promotes growth.
(D) Gibberellins inhibit growth.

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

Q. Most of the plant hormones promote plant growth. A plant hormone which inhibits growth is :
(a) abscisic acid
(b) ethene
(c) ascorbic acid
(d) cytokinin

Question 35
Name the plant hormones responsible for the following

(a) Elongation of cells
(b) Growth of stem
(c) Promotion of cell division
(d) Falling of senescent leaves

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Factors Affecting Plant Growth

Standard XII Biology

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Question 11 The main function of abscisic acid in plants is to (a) increase the length of cells (b) promote cell division (c) inhibit growth (d) promote growth of stem

(c) inhibit growth Abscisic acid is a plant hormone involved in plant processes such as dormancy and environmental stress responses. Abscisic acid promotes seed dormancy and inhibits growth.

Question 11
The main function of abscisic acid in plants is to

(a) increase the length of cells
(b) promote cell division
(c) inhibit growth
(d) promote growth of stem

(c) inhibit growth

Abscisic acid is a plant hormone involved in plant processes such as dormancy and environmental stress responses. Abscisic acid promotes seed dormancy and inhibits growth.