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 |
Consider the following statements regarding a certain plant growth regulator:
I. | They are a class of plant growth substances that promote cell division. |
II. | They are primarily involved in cell growth, differentiation, and other physiological processes. |
III. | Their effects were first discovered through the use of coconut milk by Folke Skoog. |
This plant hormone must be:
1. Auxin
2. Cytokinin
3. Giberrellin
4. Ethylene
Read the following statements and choose the correct option.
Statement A: | Cytokinin isolated from unripe maize grains is known as zeatin. |
Statement B: | Cytokinin delays senescence. |
1. | Only A is correct |
2. | Only B is correct |
3. | Both A & B are correct |
4. | Both A & B are incorrect |
(i) | GA causes increase in length of grape stalks and causes apples to elongate and improve its shape |
(ii) | GA causes bolting in beet, cabbage and many plants with rosette habit |
(iii) | Kinetin is a modified cytosine |
(iv) | Cytokinins are abundant in root apices, developing shoot buds and young fruits |
(v) | Cytokinins cause lateral shoot growth and adventitious shoot formation |