Consider the following statements regarding growth in plants -
I. Cell enlargement requires water.
II. Oxygen helps in releasing metabolic energy for growth activities.
III. Nutrients are required for synthesis of protoplasm and act as source of energy.
Which of the above statements are true?
1. I and II only 2. I and III only
3. II and III only 4. I, II, and III
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWith respect to photoperiodism, the short day plant, the long day plant and day neutral plant are represented respectively by:
1. A, B and C
2. B, A and C
3. C, B and A
4. A, C and B
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyPlant 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
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyN6- furfurylamino purine and kinetin are derivative of …….
1.Indol compounds
2.Adenine
3.carotenoids
4.Terpenes
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyC2H4 or Ethylene are …...or derivative of….
1.Indol compounds
2.Gases
3.carotenoids
4.Terpenes
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIn 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
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyPlant growth promotors are not involved in
1.Cell division, cell enlargement
2.Pattern formation, seed formation
3.Dormancy, Abscission
4.Fruiting and Flowering
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich of the following hormones is common in both the categories of plant promotor and plant inhibitor?
1.GA
2.ABA
3.Auxin
4.Ethylene
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich of the following is wrong?
1.ABA is Growth inhibiting regulator
2.Ethylene could fit either of the groups, inhibitors and activators.
3.Auxins, GA and Cytokinins are plant promoters
4.Ethylene is largely a promotor of growth activities
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe 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 we're accidental
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology