Q. No.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.
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 |
The term synergistic action of hormones refers to
| 1. | When two hormones act together but bring about opposite effects. |
| 2. | When two Hormones act together and contribute to the same function. |
| 3. | When one Hormone affects more than one function |
| 4. | When many hormones bring about anyone function |
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
Monocarpic plants are those which
1. bear flowers with one ovary
2. flower once and die
3. bear only one flower
4. All of these
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