• June 18, 2021

Biology MCQ on Auxin for NEET and Medical Exam 2021

MCQ on Auxin: Biology is one of the most important and vital sections in NEET. It includes theories, descriptions, discoveries, diagrams, definitions, explanation of differences and relations. Most of the concepts covered in the NEET syllabus are from the NCERT syllabus of Class 11 & 12. Other related sources make up for the rest of the syllabus.

MCQ on Auxin

In this post we are providing you MCQ on Auxin, which will be beneficial for you in upcoming NEET, AIIMS, JIPMER, PGIMER, CBSE Board, ICSE Board, Class 12th, 11th.

MCQ on Auxin

Q1. Which one of these is commonly used synthetic auxin
a) NAA
b) IAA
c) IBA
d) GA

View Answer

(a) NAA

Q2. Uneven distribution of _______ results in phototropic curvature
a) phytochrome
b) auxin
c) gibberellin
d) cytokinin

View Answer

(b) auxin

Q3. Removal of apical bud results in
a) more axillary buds
b) flowering ceases
c) more lateral branches
d) plant growth ceases

View Answer

(c) more lateral branches

Q4. Application of ________ can delay abscission of fruits and leaves at early stages
a) gibberelic acid
b) ethylene
c) auxin
d) cytokinin

View Answer

(c) auxin

Q5. Auxin is transported polarly. Mostly, auxin movement is
a) acropetal
b) basipetal
c) centripetal
d) both (a) and (c)

View Answer

(b) basipetal

Q6. Commonly applied hormone in tea plantation is
a) abscisic acid
b) ethylene
c) indole-­3-­acetic acid
d) zeatin

View Answer

(c) indole-­3-­acetic acid

Q7. Find the incorrect match
a) Abscissic acid ­- Stomatal closure
b) IAA ­- Cell wall elongation
c) Cytokinin ­- Cell division
d) Gibberellic acid ­- Leaf abscission

View Answer

(d) Gibberellic acid ­- Leaf abscission

Q8. Which of the following combination of hormones will promote differentiation of shoot as well as root in tissue culture?
a) Gibberellin and abscisic acid
b) Auxin and abscisic acid
c) IAA and gibberellin
d) Auxin and cytokinin

View Answer

(d) Auxin and cytokinin

Q9. Flowering can be induced in pineapple by application of
b) NAA, 2,4­-D
c) Phenyl acetic acid
d) Cytokinin

View Answer

(b) NAA, 2,4­-D

Q10. The Avena curvature test is an accurate bioassay for
a) ABA
b) GA3
c) IAA
d) Ethylene

View Answer

(c) IAA

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By Team Learning Mantras