Q. No.Plant Growth Regulators (PGRs) are not
1. Very less in number in plants
2. Small and simple molecules
3. Diverse chemical composition
4. Plant hormones or phytohormones
Subtopic: Growth Hormones & Auxin |
56%
Level 3: 35%-60%
Hints
In the living plant body, the PGRs can be broadly divided into two groups. This classification is actually based on
1.Function
2.Structure
3.Metabolism
4.Kinetin
Subtopic: Growth Hormones & Auxin |
85%
Level 1: 80%+
Hints
The Discovery of PGRs
| 1. | Four discovery were accidental one was with a planned experiment |
| 2. | Three discovery were accidental Two were with a planned experiment |
| 3. | Two discovery were accidental Three were with a planned experiment |
| 4. | All five were accidental |
Subtopic: Growth Hormones & Auxin |
81%
Level 1: 80%+
Hints
Phototropism is firstly studied by
| 1. | Charles Darwin and his son Francis Darwin |
| 2. | Charles Darwin and his friend Francis Darwin |
| 3. | Charles Darwin and his brother Francis Darwin |
| 4. | Charles Darwin and his colleague Francis Darwin |
Subtopic: Growth Hormones & Auxin |
94%
Level 1: 80%+
Hints
“The tip of the ……(1)…… is the site of transmittable influence that caused the bending of the entire ……(2)…….”
1.Coleorrhiza
2.Coleoptile
3.Auxin
4.Scutellum
Subtopic: Growth Hormones & Auxin |
83%
Level 1: 80%+
Hints
Subtopic: Growth Hormones & Auxin |
92%
Level 1: 80%+
Hints
This picture suggests that
| 1. | Tip of the coleorrhiza is the source of Auxin |
| 2. | Tip of coleoptile is the source of Auxin |
| 3. | Base of coleoptile is the source of Auxin |
| 4. | Base of coleorrhiza is the source of Auxin |
Subtopic: Growth Hormones & Auxin |
92%
Level 1: 80%+
Hints
Here arrows indicate
1.Source of Auxin
2.Direction of bending
3.Direction of light
4.Direction of cap removal
Subtopic: Growth Hormones & Auxin |
67%
Level 2: 60%+
Hints
Which of the following growth regulators is an adenine derivative ?
| 1. | Auxin | 2. | Cytokinin |
| 3. | Ethylene | 4. | Abscisic acid |
Subtopic: Growth Hormones & Auxin |
76%
Level 2: 60%+
NEET - 2022
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: Growth Hormones & Auxin |
63%
Level 2: 60%+
NEET - 2023
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