Select Question Set:
Q. No.In plants:
I: Growth is open
II: Differentiation is open
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Growth |
76%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Which plant growth regulator is used to initiate flowering and synchronising fruit-set in pineapples?
1. Gibberellins
2. Cytokinins
3. ABA
4. Ethylene
Subtopic: Ethylene |
84%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Seed dormancy can be due to the presence of chemical inhibitors which include all the following except:
1. abscisic acids
2. phenolic acids
3. para-ascorbic acid
4. gibberellic acid
Subtopic: Seed Dormancy (OLD NCERT) |
85%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Which PGR stimulates the closure of stomata and increases the tolerance of plants to various kinds of stresses?
1. Abscisic acid
2. Ethylene
3. Auxins
4. Cytokinins
Subtopic: Abscisic Acid |
94%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Consider the given two statements:
| Assertion(A): | Plant growth is intimately linked to the water status of the plant. |
| Reason(R): | The plant cells grow in size by cell enlargement, which in turn requires water. |
| 1. | (A) is True but (R) is False |
| 2. | Both (A) and (R) are True and (R) correctly explains (A) |
| 3. | Both (A) and (R) are True and but (R) does not correctly explain (A) |
| 4. | (A) is False but (R) is True |
Subtopic: Growth |
85%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
All the following plants exhibit difference in shape of leaves in juvenile and in mature phase of their life cycle except:
1. Cotton
2. Coriander
3. Larkspur
4. Buttercup
1. Cotton
2. Coriander
3. Larkspur
4. Buttercup
Subtopic: Development |
77%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
All the following are known functions of the plant growth regulator auxins except:
1. Promotion of flowering in pineapples
2. Induction of parthenocarpy in tomatoes
3. Fruit ripening in tomatoes
4.`Initiation of rooting in stem cuttings
1. Promotion of flowering in pineapples
2. Induction of parthenocarpy in tomatoes
3. Fruit ripening in tomatoes
4.`Initiation of rooting in stem cuttings
Subtopic: Growth Hormones & Auxin | Ethylene |
84%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Regarding plant growth regulators:
1. Only I and II are correct
2. Only I and III are correct
3. Only II and III are correct
4. I, II and III are correct
| I: | Auxins are plant growth promoters |
| II: | ABA is a plant growth inhibitor |
| III: | Ethylene is largely an inhibitor of growth activities |
2. Only I and III are correct
3. Only II and III are correct
4. I, II and III are correct
Subtopic: Growth Hormones & Auxin |
85%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Given below are two statements:
In the light of the above statements, choose the most appropriate answer from the options given below
| Statement I: | The phenomenon by which the undividing parenchyma cells start to divide mitotically during plant tissue culture is called as dedifferentiation. |
| Statement II: | The ability of plants to follow different pathways in response to environment leading to formation of different kinds of structures is called plasticity. |
| 1. | Statement I is correct but Statement II is incorrect |
| 2. | Statement I is incorrect but Statement II is correct |
| 3. | Both Statement I and Statement II are correct |
| 4. | Both Statement I and Statement II are incorrect |
Subtopic: Development | Differentiation, Dedifferentiation and Redifferentiation |
85%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Which hormone promotes internode / petiole elongation in deep water rice?
| 1. | 2, 4-D | 2. | GA3 |
| 3. | Kinetin | 4. | Ethylene |
Subtopic: Ethylene |
69%
From NCERT
NEET - 2023
Please attempt this question first.
Hints
Please attempt this question first.
Select Question Set:
© 2024 GoodEd Technologies Pvt. Ltd.