In most situations, which of the following acts as an antagonist to GAs?
1. ABA
2. IAA
3. Kinetin
4. Ethylene

Identify the option where all the columns are not correctly matched:

Primary and secondary growth are inhibited by:

1. Auxins

2. Gibberellins

3. Abscisic acid

4. Cytokinins

Which one of the following growth regulators is known as "stress hormone" ?

1. abscisic acid

2. Ethylene

3. GA₃             

4. lndole acetic acid

Which one of the following acids is a derivative of carotenoids?

1. Indole-butyric acid

2. Indole-3-acetic acid

3. Gibberellic acid

4. Abscisic acid

Senescence as an active developmental cellular process in the growth and functioning of a flowering plant, is indicated in

1. vessels and tracheid differentiation

2. leaf abscission

3. annual plants

4. floral parts
 

Bud dormancy is induced by:-

1. ABA

2. ethylene

3. IAA

4. gibberellic acid.

Abscisic acid is known as the stress hormone because it

(1) breaks seed dormancy

(2) induces flowering

(3) promotes leaf fall

(4) promotes closure of stomata

One hormone hastens maturity period in juvenile conifers, a second hormone controls xylem differentiation, while the third hormone increases the tolerance of plants to various stresses.They are respectively:-

(1) Gibberellin, Auxin, Ethylene

(2) Auxin, Gibberellin, Cytokinin

(3) Gibberellin, Auxin, ABA

(4) Auxin, Gibberellin, ABA

Identify the incorrect statement about ABA growth regulator.