Which one of the following plants does not show plasticity?
1. Maize 
2. Cotton 
3. Coriander 
4. Buttercup
Subtopic:  Development |
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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:  Ethylene |
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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 the plants:
1. Cytokinin
2. ABA
3. Gibberellin
4. Ethylene

Subtopic:  Ethylene |
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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:  Differentiation |
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Which hormone is used to induce immediate stomatal closure in leveas ? 
1. Cytokinin 
2. Gibberellin 
3. Abscisic Acid 
4. Auxin 

Subtopic:  Abscisic Acid |
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Removal of apical dominance by decapitation is utilised for: 
1. Suppressing the activity of intercalary meristem 
2. Early senescence 
3. Hedge making 
4. Preparing weed-free lawns 

Subtopic:  Growth Hormones & Auxin | Auxin Function |
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Which of the following growth regulators is an adenine derivative ?
1. Auxin
2. Cytokinin
3. Ethylene
4. Abscisic acid
Subtopic:  Growth Hormones & Auxin |
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The phenomenon by which the undividing parenchyma cells start to divide mitotically during plant tissue culture is called as :
1. Differentiation
2. Dedifferentiation
3. Redifferentiation
4. Secondary growth
Subtopic:  Growth | Differentiation |
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The plant hormone used to destroy weeds in a field is:
1. 2, 4-D
2. IBA
3. IAA
4. NAA

Subtopic:  Auxin Function |
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Plants follow different pathways in response to environment or phases of life to form different kinds of structures. This ability is called:
1. Plasticity
2. Maturity
3. Elasticity
4. Flexibility

Subtopic:  Development |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology