Match the columns:
Column I
Column II
A.
Adenine derivative
(i)
Ethylene
B.
Terpenes
(ii)
Kinetin
C.
Gaseous hormone
(iii)
GA
D.
Caroteinoid derivative
(iv)
ABA
1.
A = (i) , B =(ii) , C = (iii) , D= (iv)
2.
A = (iv) , B =(iii) , C = (i) , D= (ii)
3.
A = (ii) , B =(iii) , C = (iv) , D= (i)
4.
A = (ii) , B =(iii) , C = (i) , D= (iv)
Subtopic: Â Growth Hormones & Auxin |
 84%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Charles Darwin and his son Francis Darwin found that coleoptile tip of a plant responded to unilateral light by growing towards the light source (photoperiodism). They worked with plant?
1. Phalaris (Canary grass)
2. Avena (Oat)
3. Saccharum
4. Triticale
1. Phalaris (Canary grass)
2. Avena (Oat)
3. Saccharum
4. Triticale
Subtopic: Â Growth Hormones & Auxin |
 78%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Subtopic: Â Abscisic Acid |
 96%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Subtopic: Â Growth Hormones & Auxin |Â Ethylene |
 85%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Which of the following conclusions is supported by the research of both Went and Charles Darwin on shoot responses to light?
| 1. | When shoots are exposed to light, a chemical substance migrates towards the light. |
| 2. | Agar contains a chemical substance that mimics a plant hormone. |
| 3. | A chemical substance involved in shoot bending is produced in the shoot tips. |
| 4. | Once the shoot tip is cut, normal growth cannot be induced. |
Subtopic: Â Growth Hormones & Auxin |
 66%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Match the columns:
| Column-I | Column-II | ||
| A. | Auxin | (i) | Chloroplast development |
| B. | Ethylene | (ii) | Fruit ripening |
| C. | GA | (iii) | Root initiation in stem cutting |
| D. | Cytokinin | (iv) | Breaking seed dormancy |
| 1. | A = (i) , B=(iv), C =(iii) , D= (ii) |
| 2. | A = (ii) , B=(iii), C =(i) , D= (iv) |
| 3. | A = (iii) , B=(ii), C =(iv) , D= (i) |
| 4. | A = (i) , B=(ii), C =(iii) , D= (iv) |
Subtopic: Â Growth Hormones & Auxin |Â Gibberellin |Â Cytokinin |Â Ethylene |
 89%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Read the following statements:
How many of the above statements are correct?
1. Four
2. Five
3. Two
4. Three
| (i) | NAA and 2,4-D are synthetic auxins |
| (ii) | Auxins promote flowering in pineapples |
| (iii) | Auxins help to prevent fruit and leaf drop at early stages but promote the abscission of older mature leaves and fruits |
| (iv) | Apical bud removal is applied for hedge making and creating bushy tea plants |
| (v) | Auxin induces parthenocarpy, like, in tomatoes |
How many of the above statements are correct?
1. Four
2. Five
3. Two
4. Three
Subtopic: Â Growth Hormones & Auxin |
 83%
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
The aleurone layer is stimulated to release ______________ and ______________ as a result of gibberellin release from the embryo of a seed:
1. Amylase; Protease
2. RNase; DNase
3. Proteins; Amino acids
4. Carbohydrates ; RNase
1. Amylase; Protease
2. RNase; DNase
3. Proteins; Amino acids
4. Carbohydrates ; RNase
Subtopic: Â Gibberellin |
 66%
Please attempt this question first.
Hints
Which of the following plant growth responses is primarily due to the action of auxins?
1. Cell elongation
2. Leaf abscission
3. Cell division
4. Fruit development
1. Cell elongation
2. Leaf abscission
3. Cell division
4. Fruit development
Subtopic: Â Auxin Function |
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
If you were shipping green bananas to a supermarket thousands of miles away, which of the following chemicals would you want to eliminate from the plants environment?
1. CO2
2. Cytokinin
3. Auxin
4. Ethylene
1. CO2
2. Cytokinin
3. Auxin
4. Ethylene
Subtopic: Â Ethylene |
 89%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
© 2025 GoodEd Technologies Pvt. Ltd.