The hormone responsible for senescence:
1.  ABA
2.  Auxin
3.  GA
4.  Cytokinin

Subtopic:  Abscisic Acid |
 77%
Level 2: 60%+
AIPMT - 2001
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Seed dormancy is due to:

1. Ethylene 2. Abscisic acid
3. IAA 4. Starch
Subtopic:  Abscisic Acid |
 88%
Level 1: 80%+
AIPMT - 2002
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