During seed germination its stored food is mobilized by:
1. Cytokinin
2. ABA
3. Gibberellin
4. Ethylene
"Foolish seedling" disease of rice led to the discovery of:
1. GA
2. ABA
3. 2, 4-D
4. IAA
Which one of the following pairs is not correctly matched?
1. | Abscisic acid - Stomatal closure |
2. | Gibberellic acid - Leaves fall |
3. | Cytokinin - Cell division |
4. | IAA - Cell wall elongation |
Parthenocarpic tomato fruits can be produced by:
1. | removing androecium of flowers before pollen grains are released |
2. | treating the plants with low concentrations of gibberellic acid and auxins |
3. | raising the plants from vernalised seeds |
4. | treating the plants with phenylmercuric acetate |
An enzyme that can stimulate the germination of barley seeds is:
1. -amylase
2. lipase
3. protease
4. invertase