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%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

……...is the site of transmittable influence that caused the bending of the entire……..

1.Coleorrhiza

2.Coleoptile

3.Auxin

4.Scutellum

Subtopic:  Growth Hormones & Auxin |
 81%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

Auxin was isolated by

1.F. W. Went

2.Charles Darwin

3.Francis Darwin

4.F. Skoog

Subtopic:  Growth Hormones & Auxin |
 92%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

advertisementadvertisement

Find the wrong match.

1.F. W. Went - Oat seedlings

2.Charles Darwin - Canary Grass

3.Francis Darwin - Canary Grass

4.E. Kurosawa- Orange

Subtopic:  Gibberellin |
 89%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

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%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

Here arrows indicate

1.Source of Auxin

2.Direction of bending

3.Direction of light

4.Direction of cap removal

Subtopic:  Growth Hormones & Auxin |
 68%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

advertisementadvertisement

Foolish Seedling-

Find the odd one.

1.Bakane

2.Disease of Rice seedlings

3.Caused by viral pathogen

4.Gibberella fujikuroi

Subtopic:  Gibberellin |
 81%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

E. Kurosawa

1. Reported the appearance of symptoms of the disease in rice seedlings
2. In 1926
3. Used sterile filtrates of the fungus
4. All of these
Subtopic:  Gibberellin |
 94%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

Internodal segments of tobacco stems, the callus is actually

1.An undifferentiated cell

2.A mass of differentiated cell

3.A mass of undifferentiated cell

4.A differentiated cell

Subtopic:  Growth Hormones & Auxin |
 80%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

advertisementadvertisement

Find the incorrect statement.

F. Skoog and his co-workers observed that

1. Callus proliferated only if Auxin is there
2. Callus proliferated only if Auxin + extracts of vascular tissue was there
3. Callus proliferated only if Auxin + Yeast extract was there
4. Callus proliferated only if Auxin + coconut milk/DNA was there
Subtopic:  Cytokinin |
 54%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch