Match the following concerning the activity/function and the phytohormone involved:
Column I | Column II | ||
(a) | Fruit ripener | (i) | Abscisic acid |
(b) | Herbicide | (ii) | GA 3 |
(c) | Bolting agent | (iii) | 2, 4-D |
(d) | Stress hormone | (iv) | Ethephon |
Select the correct option from following:
Options: | (a) | (b) | (c) | (d) |
1. | (ii) | (iii) | (iv) | (i) |
2. | (iii) | (iv) | (ii) | (i) |
3. | (iv) | (iii) | (ii) | (i) |
4. | (iv) | (ii) | (i) | (iii) |
Vernalisation stimulates flowering in:
1. Turmeric
2. Carrot
3. Ginger
4. Zaminkand
Which one of the following generally acts as an antagonist to Gibberellins?
1. Ethylene
2. ABA
3. IAA
4. Zeatin
One of the commonly used plant growth hormone in tea plantations is:
1. | Abscisic acid | 2. | Zeatin |
3. | Indole-3- acetic acid | 4. | Ethylene |
Root development is promoted by:
1. Auxin
2. Gibberellin
3. Ethylene
4. Abscisic acid
Inhibitory substances in dormant seeds cannot be removed by subjecting seeds to:
1. Gibberellic acid
2. Nitrate
3. Ascorbic acid
4. Chilling conditions
Who coined the term 'Kinetin'?
1. Skoog and Miller
2. Darwin
3. Went
4. Kurosawa
What is necessary for ripening of fruits:
1. 80% of ethylene
2. Abscisic acid
3. 2, 4 D
4. A.M.O. – 16
Effect of light and dark rhythm on plants is known as:
1. Photonasty
2. Phototropism
3. Photoperiodism
4. Photomorphogenesis
The maximum growth rate occurs in:
1. Senescent phase
2. Lag phase
3. Exponential phase
4. Stationary phase