Inhibitory substances in dormant seeds cannot be removed by subjecting seeds to:
1. Gibberellic acid
2. Nitrate
3. Ascorbic acid
4. Chilling conditions

Subtopic:  Seed Dormancy (OLD NCERT) |
 57%
From NCERT
NEET - 2020
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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)

Subtopic:  Growth Hormones & Auxin | Gibberellin | Ethylene | Abscisic Acid |
 85%
From NCERT
NEET - 2020
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Vernalisation stimulates flowering in:
1. Turmeric
2. Carrot
3. Ginger
4. Zaminkand

Subtopic:  Vernalization (OLD NCERT) |
 77%
From NCERT
AIPMT - 2012
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Which one of the following generally acts as an antagonist to Gibberellins?
1. Ethylene
2. ABA
3. IAA
4. Zeatin

Subtopic:  Abscisic Acid |
 86%
From NCERT
AIPMT - 2012
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One of the commonly used plant growth hormone in tea plantations is:

1. Abscisic acid 2. Zeatin
3. Indole-3- acetic acid 4. Ethylene
Subtopic:  Growth Hormones & Auxin |
 77%
From NCERT
AIPMT - 2010
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Root development is promoted by:
1. Auxin
2. Gibberellin
3. Ethylene
4. Abscisic acid

Subtopic:  Growth Hormones & Auxin |
 76%
From NCERT
AIPMT - 2010
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Who coined the term 'Kinetin'?

1. Skoog and Miller

2. Darwin

3. Went

4. Kurosawa

Subtopic:  Growth Hormones & Auxin |
 83%
From NCERT
NEET - 2020
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What is necessary for ripening of fruits:
1.  80% of ethylene
2.  Abscisic acid
3.  2, 4 D
4.  A.M.O. – 16

Subtopic:  Ethylene |
 95%
From NCERT
AIPMT - 1998
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Effect of light and dark rhythm on plants is known as:
1.  Photonasty
2.  Phototropism
3.  Photoperiodism
4.  Photomorphogenesis

Subtopic:  Photoperiodism (OLD NCERT) |
 89%
From NCERT
AIPMT - 1998
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The maximum growth rate occurs in:

1. Senescent phase

2. Lag phase

3. Exponential phase

4. Stationary phase 

Subtopic:  Growth Model |
 90%
From NCERT
AIPMT - 2004
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