Plant Growth And Development — DPP 3

20 NEET questions from Plant Growth And Development, with answers and explanations. Attempt it as a timed test to get scoring, accuracy breakdown and mistake tracking.

Attempt this test free 20 questions · 30 minutes · +80 marks
1
Select out the incorrect match :
  1. A GA - speed up malting process
  2. B Auxin - Xylem differentiation
  3. C Cytokinin - Adventitious shoot formation
  4. D Ethylene - Lateral shoot growth
Show answer

Correct answer: D

2
Which of the following is a correct match regarding growth measuring parameters?
  1. A Maize root apical meristem - surface area
  2. B Pollen tube - number of cells
  3. C Watermelon - size of cells
  4. D Dorsiventral leaf - length
Show answer

Correct answer: C

3
Which of the following statements are correct regarding growth?
(A) In plants, the form of growth is open and localised
(B) Swelling of piece of wood in water is considered as growth since it involve the increase in size
(C) Growth is accompanied by metabolic processes
(D) Growth, at a cellular level, is a result of increase in the amount of protoplasm
  1. A A, B,C and D
  2. B A and B
  3. C B, C and D
  4. D A, C and D
Show answer

Correct answer: D

4
Meristematic phase of growth is characterised by :-
  1. A Increased vacuolation
  2. B Maximal size in terms of protoplasmic modifications
  3. C Cells those are rich in protoplasm and having thin cell walls with abundant plasmodesmata
  4. D Cell enlargement
Show answer

Correct answer: C

5
Which one of the following pairs, is not correctly matched?
  1. A IAA - Cell wall elongation
  2. B Abscisic acid - Stomatal closure
  3. C Gibberellic acid - Leaf fall
  4. D Cytokinin - Cell division
Show answer

Correct answer: C

6
Assertion : Gibberellins promote bolting in beet, cabbages and many plants with rosette habit.
Reason : It promotes internode elongation just prior to flowering.
  1. A Both Assertion & Reason are True & the Reason is a correct explanation of the Assertion.
  2. B Both Assertion & Reason are True but Reason is not a correct explanation of the Assertion.
  3. C Assertion is True but the Reason is False.
  4. D Both Assertion & Reason are False.
Show answer

Correct answer: A

7
Removal of shoot tips (decapitation) usually results in the growth of lateral buds. It is related to the removal of effect of which plant hormone?
  1. A Ethylene
  2. B Auxin
  3. C Cytokinin
  4. D Gibberellic acid
Show answer

Correct answer: B

8
Hormone, which is sprayed on young conifers to hasten the maturity period and early seed production, is -
  1. A Ethylene
  2. B ABA
  3. C Gibberellin
  4. D Cytokinin
Show answer

Correct answer: C

9
The most widely used compound as sources of $\mathrm{C}_{2} \mathrm{H}_{4}$ is-
  1. A Kinetin
  2. B Zeatin
  3. C IBA
  4. D Ethephon
Show answer

Correct answer: D

10
Plant growth is unique because :
  1. A It is intrinsic
  2. B It occurs at the expense of energy
  3. C Plant retains the capacity for unlimited growth throughout their life
  4. D Its accompanied by metabolic processes
Show answer

Correct answer: C

11
Which of the following events in plants is/are affected by interaction of more than one plant growth regulators?
  1. A Dormancy in seeds / buds
  2. B Abscission and senescence
  3. C Apical dominance
  4. D All of the above
Show answer

Correct answer: D

12
Swelling of piece of wood when placed in water is not considered as growth because:
  1. A It does not occur at expense of energy
  2. B It is not a metabolic change
  3. C It is reversible process
  4. D All of the above
Show answer

Correct answer: D

13
The movement of auxin is -
  1. A Acropetal
  2. B Basipetal
  3. C Lateral
  4. D Centripetal
Show answer

Correct answer: B

14
Which of the following is not a natural occuring plant hormone ?
  1. A 2, 4 - D
  2. B $\mathrm{GA}_{2}$
  3. C Gibberellin
  4. D I.A.A
Show answer

Correct answer: A

15
One single maize root apical meristem can give rise to more than
  1. A 17,500 new cells per minute
  2. B 17,500 new cells per hour
  3. C 17,500 new cells per day
  4. D 17,500 new cells per week
Show answer

Correct answer: B

16
Match the following :
Plant Growth And Development – NEET-4490
  1. A A - i, B - ii, C - iii, D - iv, E - v
  2. B A - ii, B - i, C - v, D - iii, E - iv
  3. C A - v, B - iv, C - iii, D - ii, E - i
  4. D A - iv, B - iii, C - i, D - ii, E - v
Show answer

Correct answer: C

17
Bolting hormone is -
  1. A Auxin
  2. B Gibberellin
  3. C ABA
  4. D Ethylene
Show answer

Correct answer: B

18
Root development is promoted by:
  1. A Auxin
  2. B Gibberellin
  3. C Ethylene
  4. D Abscisic acid
Show answer

Correct answer: A

19
Which of following is used to speed up the malting process in brewing industry ?
  1. A Auxin
  2. B $\mathrm{GA}_{3}$
  3. C Kinetin
  4. D ABA
Show answer

Correct answer: B

20
Hormone responsible to induce senescence :-
  1. A ABA
  2. B Auxin
  3. C GA
  4. D Cytokinin
Show answer

Correct answer: A

Attempt this as a timed test

Reading answers is not the same as sitting the paper. Attempt it timed and you get your score, per-question timing, and the mistakes tracked for revision.

Start free

More Plant Growth And Development tests

Plant Growth And Development — DPP 1 20 Q Plant Growth And Development — DPP 2 20 Q
All Plant Growth And Development tests →