Which one of the following pairs, is not correctly matched?

1. IAA – Cell wall elongation

2. Abscissic acid – Stomatal closure

3. Gibberellic acid – Leaf fall

4. Cytokinin – Cell division

Subtopic:  Gibberellin | Ethylene |
 81%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh

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

 

Subtopic:  Auxin Function | Gibberellin | Cytokinin | Ethylene | Abscisic Acid |
 93%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh

Match the following concerning the activity/function and the phytohormone involved:-

(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:-

(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 |
 92%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh

Match the following concerning the activity/function and the phytohormone involved :-

(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 :-

(1) (a)-(ii), (b)-(iii), (c)-(iv), (d)-(i)

(2) (a)-(iii), (b)-(iv), (c)-(ii), (d)-(i)

(3) (a)-(iv), (b)-(iii), (c)-(ii), (d)-(i)

(4) (a)-(iv), (b)-(ii), (c)-(i), (d)-(iii)

Subtopic:  Growth Hormones & Auxin | Gibberellin | Ethylene | Abscisic Acid |
 91%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh

Consider the following statements:
I. The process of cold treatment that hastens floweringis called vernalisaion. Thus,

   artificial cold treatmentof germinating winter wheat seeds could induce flowering if

    grown  in spring.

II. Vernalisation prepares a plant to flower. It makes the plant perceptive to a stimulus

     but does not function as a stimulus.

III. If vernalisation is followed by high temperature treatment at about 40o C for a

     minimum of 2 days, the vernalisation stimulus is lost. This is known as

     devernalisation.

The correct statements are:

(1) I and II

(2) II and III

(3) I and III

(4) I, II and III

Subtopic:  Vernalization (OLD NCERT) |
 51%
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NEET 2023 - Target Batch - Aryan Raj Singh
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Consider the following statements:

I. The phytochrome-mediated response to photoperiod occurs in the leaves

II. Flowering occurs in the apical meristems.

III. A signal, called florigen, connects the two

The correct statements are:

(1) I, II, III

(2) I, II

(3) I, III

(4) II, III

Subtopic:  Photoperiodism (OLD NCERT) |
 71%
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NEET 2023 - Target Batch - Aryan Raj Singh
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Consider the following statements:

I. They flower when the day length is less than a certain critical length. If these plants are

exposed to day lengths in excess of this critical point, they continue growing vegetatively.

II. Long day plants flower when the day length is greater than a certain critical length

III. short day plants are actually long night plants and long day plants are actually short

     night plants. The correct statements are:

(1) I and II

(2) II and III

(3) I and III

(4) I, II and III

Subtopic:  Photoperiodism (OLD NCERT) |
 54%
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NEET 2023 - Target Batch - Aryan Raj Singh
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Consider the following statements regarding phytochrome:

I. Pr is metabolically inactive and absorbs red light(660nm). On absorption of light it gets

   converted into a metabolically active Pfr.

II. Pfr converts back to Pr after absorbing far red light(730nm).

III. Treatment with red light (R) stimulates seed germination,whereas far red light (FR)

     inhibits seed germination.

   The correct statements are:

(1) I and II

(2) I and III

(3) I, II, III

(4) None

Subtopic:  Photoperiodism (OLD NCERT) |
 52%
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NEET 2023 - Target Batch - Aryan Raj Singh
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Consider the following statements:

I. Growth in plants occurs by cell division and cell enlargement, followed by cell differentiation.
II. Growth in plants is generally limited to regions of growing points known as meristems.

1. Both are correct and II explains I

2. Both are correct but II does not explain I

3. I is correct but II is incorrect

4. I is incorrect but II is correct

Subtopic:  Growth |
 56%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh

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

Subtopic:  Cytokinin |
 90%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh