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Q. No.The site of perception of light in plants during photoperiodism is:
1. Axillary bud
2. Leaf
3. Shoot apex
4. Stem
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyPlants 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
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe plant hormone used to destroy weeds in a field is:
1. 2, 4-D
2. IBA
3. IAA
4. NAA
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyCoconut milk factor is: -
1. An auxin
2. A gibberellin
3. Abscisic acid
4. Cytokinin
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologySeed dormancy is due to the : -
1. Ethylene
2. Abscissic acid
3. IAA
4. Starch
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich of the following PGR is present in coconut milk which is used in tissue culture?
1. Cytokinin
2. Auxin
3. Gibberellin
4. Ethylene
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich hormone is responsible for fruit ripening :
1. Ethylene
2. Auxin
3. Ethyl chloride
4. Cytokinin
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIf the apical bud has been removed then we observe :
1. More lateral branches
2. More axillary buds
3. Plant growth stops
4. Flowering stops
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyCell elongation in internodal regions of the green plants takes place due to:-
1. Cytokinins
2. Gibberellins
3. Ethylene
4. Indole acetic acid
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe maximum growth rate occurs in:-
1. Senescent phase
2. Lag phase
3. Exponential phase
4. Stationary phase
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologySelect Chapter Topics:
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