Q. No.
During mid 1960s, the purification and chemical characterisation of which of the following PGR was performed?
(1) ABA
(2) GA
(3) Auxin
(4) Cytokinins
(1) ABA
(2) GA
(3) Auxin
(4) Cytokinins
Cousins confirmed the release of a volatile substance from ripened oranges that
(1) Hastened the ripening of already ripened bananas
(2) Hastened the ripening of unripened banana
(3) Slowed the ripening of unripened bananas
(4) Slowed the ripening of oranges
For all natural and synthetic compounds involved in growth, which of the following term is used
(1) Auxein
(2) Auxin
(3) GA3
(4) GAs
Auxins
Find the odd one.
| 1. | Initiate rooting in stem cuttings |
| 2. | Promote flowering e.g. Pineapples |
| 3. | Prevent fruit and leaf drop at early stages |
| 4. | Prevent the abscission of older mature leaves and fruits |
In most higher plants, the growing apical bud inhibits the growth of …….. or axillary buds, a phenomenon called………….
(1) Lateral, lateral Dominance
(2) Lateral, Apical Dominance
(3) Apical, Lateral Dominance
(4) Apical, Apical Dominance
For tea plantations, hedge-making, which of the following PGR is used?
1. Auxins
2. Cytokinins
3. GA3
4. ABA
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