Question No:1
How many of the following auxins are obtained from plants?
IAA, IBA, NAA, 2, 4-D
[A] 1
[B] 2
[C] 3
[D] 4
Question No:2
NAA stands for ______.
[A] Nitro-acetic acid
[B] Nitro aceto acetate
[C] Naphthalene acetic acid
[D] Naphthaloaceto acetic acid
Question No:3
2, 4-D stands for _____
[A] 2,4—Dichlorophenoxy acetate
[B] 2, 4—Dextrophenoxy acetate
[C] 2, 4-Diphosphenoxy acetate
[D] 2, 4-Dichloromethoxy acetate
Question No:4
Synthetic auxins are extesively used in
[A] agriculture
[B] horticulture
[C] both
[D] none
Question No:5
Natural auxins are extensively used in
[A] agriculture
[B] horticulture
[C] both
[D] none
Question No:6
Which effect of auxin is applied worldwide for plant propagation?
[A] Apical dominance
[B] Herbicidal action
[C] Initiate rooting in stem cutting
[D] None
Question No:7
Auxins promote flowering in
[A] tomatoes
[B] pineapples
[C] oranges
[D] none
Question No:8
What prevents fruit and leaf to drop in early?
[A] ABA
[B] IAA
[C] NAA
[D] Both (b) and (c)
Question No:9
What promotes abscission of older mature leaf?
[A] Abscisic acid
[B] Auxin
[C] ehtylene
[D] Cytokinins
Question No:10
In most higher plants, the growing apical bud inhibits growth of lateral bud. This phenomena is called
[A] Apical tolerance
[B] Axial intolerance
[C] Apical ordinance
[D] Apical dominance
Question No:11
What can help removing apical dominance?
[A] Removal of shoot tips
[B] provide plant with a lot of auxin
[C] Both
[D] None
Question No:12
The process of removal of shoot tip to avoid apical dominance is called _____
[A] Apexotomy
[B] Decapitation
[C] Both
[D] Capitation
Question No:13
Decapitation is widely used for
[A] tea plantation.
[B] hedge-making.
[C] both.
[D] none.
Question No:14
Which of the following PGR can induce parthenocarpy?
[A] IBA
[B] 2,4-D
[C] Terpenes
[D] Kinetin
Question No:15
Auxins induce parthenocarpy in which plants?
[A] Tomato
[B] Pineapple
[C] Apple
[D] All
Plant Growth and Development Mock Exam-8
CategoriesNEET Biology