Select Chapter Topics:
Q. No.Which hormone promotes internode / petiole elongation in deep water rice?
| 1. | 2, 4-D | 2. | GA3 |
| 3. | Kinetin | 4. | Ethylene |
Subtopic: Â Ethylene |
 70%
Level 2: 60%+
NEET - 2023
Hints
In tissue culture experiments, leaf mesophyll cells are put in a culture medium to form callus. This phenomenon may be called as
| 1. | Senescence | 2. | Differentiation |
| 3. | Dedifferentiation | 4. | Development |
Subtopic: Â Differentiation, Dedifferentiation and Redifferentiation |
 58%
Level 3: 35%-60%
NEET - 2023
Hints
Spraying of which of the following phytohormone on juvenile conifers helps in hastening the maturity period, that leads to early seed production?
1. Abscisic Acid
2. Indole-3-butyric Acid
3. Gibberellic Acid
4. Zeatin
1. Abscisic Acid
2. Indole-3-butyric Acid
3. Gibberellic Acid
4. Zeatin
Subtopic: Â Gibberellin |
 80%
Level 1: 80%+
NEET - 2023
Hints
The phenomenon which is influenced by auxin and also played a major role in its discovery is:
| 1. | Phototropism | 2. | Root initiation |
| 3. | Gravitropism | 4. | Apical Dominance |
Subtopic: Â Growth Hormones & Auxin |
 63%
Level 2: 60%+
NEET - 2023
Hints
Match List-I with List-II
Choose the correct answer from the options given below:
| List-I | List-II | ||
| (A) | Auxin | (I) | Promotes female flower formation in cucumber |
| (B) | Gibberellin | (II) | Overcoming apical dominance |
| (C) | Cytokinin | (III) | Increase in the length of grape stalks |
| (D) | Ethylene | (IV) | Promotes flowering in pineapple |
Choose the correct answer from the options given below:
| Options: | (A) | (B) | (C) | (D) |
| 1. | II | I | IV | III |
| 2. | IV | III | II | I |
| 3. | I | III | IV | II |
| 4. | III | II | I | IV |
Subtopic: Â Auxin Function |Â Gibberellin |Â Cytokinin |Â Ethylene |
 86%
Level 1: 80%+
NEET - 2023
Hints
Which of the following statements is not correct?
| 1. | Phase of cell elongation of plant cells is characterized by increased vacuolation. |
| 2. | Cells in the meristematic phase of growth exhibit abundant plasmodesmatal connections |
| 3. | Plant growth is generally determinate |
| 4. | Plant growth is measurable |
Subtopic: Â Growth |
 79%
Level 2: 60%+
NEET - 2023
Hints
Which one of the following plants does not show plasticity?
1. Maize
2. Cotton
3. Coriander
4. Buttercup
1. Maize
2. Cotton
3. Coriander
4. Buttercup
Subtopic: Â Development |
 84%
Level 1: 80%+
NEET - 2022
Hints
The gaseous plant growth regulator is used in plants to:
| 1. | kill dicotyledonous weeds in the fields |
| 2. | speed up the malting process |
| 3. | promote root growth and root hair formation to increase the absorption surface |
| 4. | help overcome apical dominance |
Subtopic: Â Ethylene |
 76%
Level 2: 60%+
NEET - 2022
Hints
Production of cucumber has increased manifold in recent years. Application of which of the following phytohormones has resulted in this increased yield as the hormone is known to produce female flowers in plants?
| 1. | Cytokinin | 2. | ABA |
| 3. | Gibberellin | 4. | Ethylene |
Subtopic: Â Ethylene |
 79%
Level 2: 60%+
NEET - 2022
Hints
The living differentiated cells, that lost the capacity to divide anymore, can regain the capacity of division under certain conditions. This phenomenon is termed as:
| 1. | Redifferentiation | 2. | Maturation |
| 3. | Differentiation | 4. | Dedifferentiation |
Subtopic: Â Differentiation, Dedifferentiation and Redifferentiation |
 75%
Level 2: 60%+
NEET - 2022
Hints
Select Chapter Topics:
© 2025 GoodEd Technologies Pvt. Ltd.