Q. No.
The effect of apical dominance can be overcome by which of the following hormone?
1. IAA
2. Ethylene
3. Gibberellin
4. Cytokinin
Match the Following:
|
Column I |
Column II |
|
A. IAA B. ABA C. Ethylene D. GA E. Cytokinin |
1. Herring sperm DNA. 2. Bolting 3. Stomatal closure 4. Weed-free lawns 5. Ripening of fruits. |
Codes
| Options: | A | B | C | D | E |
| 1. | 4 | 3 | 5 | 2 | 1 |
| 2. | 5 | 3 | 4 | 2 | 1 |
| 3. | 4 | 1 | 4 | 3 | 2 |
| 4. | 5 | 3 | 2 | 4 | 4 |
Growth can be measured in various ways. Which of these can be used as parameters to measure growth?
1. increase in cell number
2. increase in cell size
3. increase in length and weight
4. All of these
Plasticity in plant growth means that
| 1. | plant roots are extensible |
| 2. | plant development is dependent on the environment |
| 3. | stems can extend |
| 4. | None of the above |
To increase sugar production in sugarcanes, they are sprayed with
1. IAA
2. cytokinin
3. gibberellin
4. ethylene
Interfascicular cambium and cork cambium are formed due to
1. Cell division
2. Cell differentitation
3. Cell dedifferentiation
4. Redifferentiation
Ethylene is used for
| 1. | retarding ripening of tomatoes |
| 2. | the hastening of ripening of fruits |
| 3. | slowing down the ripening of apples |
| 4. | Both 2. and 3. |
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