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

1. Abscisic acid

2. Ethylene

3. GA3

4. Indole acetic acid

Subtopic:  Abscisic Acid |
 94%
From NCERT
AIPMT - 2014
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Which one of the following generally acts as an antagonist to Gibberellins?
1. Ethylene
2. ABA
3. IAA
4. Zeatin

Subtopic:  Abscisic Acid |
 86%
From NCERT
AIPMT - 2012
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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

Subtopic:  Abscisic Acid |
 70%
From NCERT
AIPMT - 2009
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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.

Subtopic:  Auxin Function | Cytokinin | Ethylene | Abscisic Acid |
 67%
AIPMT - 2008
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