300+ TOP MCQs on ABA and Other Growth Regulators and Answers

NEET Biology is the vey important paper in the medical entrance exam. Here, you will discover the NEET Biology MCQs and Answers for all Concepts as per the latest syllabus. Practice more on a regular basis with these NEET Biology objective questions on air pollution . NEET Biology ABA and Other Growth Regulators Multiple Choice Questions

MCQs on ABA and Other Growth Regulators :

1. Abscission zone can be induced for formation by
(a) abscisic acid
(b) cytokinins
(c) gibberellins
(d) auxins

Answer

Answer: (a)

2. Presence of this in the seed is linked with dormancy
(a) abscisic acid
(b) gibberellic acid
(c) starch
(d) ethylene

Answer

Answer: (a)

3. Abscisic acid treatment results in
(a) root elongation
(b) stomatal closure
(c) stem elongation
(d) leaf expansion

Answer

Answer: (b)

4. ABA contains
(a) one asymmetric and two symmetric carbon atoms
(b) one symmetric and two asymmetric carbon atoms
(c) one asymmetric carbon atom
(d) one symmetric carbon atom

Answer

Answer: (c)

5. Morphactins are
(a) synthetic auxins
(b) synthetic gibberellins
(c) synthetic growth regulators
(d) none of these

Answer

Answer: (c)

6. Dormin is a
(a) abscisic acid
(b) growth promoter
(c) auxin
(d) none of these

Answer

Answer: (a)

7. This is wound hormone
(a) phyllocaline
(b) auxin
(c) hormone only
(d) necrohormone

Answer

Answer: (d)

8. This is a plant hormone
(a) acetylene
(b) dormin
(c) formalin
(d) all of these

Answer

Answer: (b)

9. This is a naturally occurring growth inhibitor
(a) NAA
(b) IAA
(c) GA
(d) ABA

Answer

Answer: (d)

10. Abscisic acid regulates
(a) leaf fall and dormancy
(b) cell division
(c) cell elongation and cell wall formation
(d) shoot elongation

Answer

Answer: (a)

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