Botany/Plant harmones Sample Test,Sample questions

Question:
 Bud initiation in shoots in promoted by

1.Auxin

2.Gibberelin

3.Auxin and cytokinins

4.None

Posted Date:-2019-04-08 14:31:19


Question:
 The enzyme which is stimulate germination of barley seeds is

1.Lipase

2.Protease

3.Invertase

4.α-amylase

Posted Date:-2019-04-08 13:57:24


Question:
Acids which is a derivative of carotenoids

1.IBA

2.Abscisic acid

3.IAA

4.Gibberellic aciD

Posted Date:-2019-04-08 14:10:05


Question:
Agent orange the leaf defoliator used by USA in Vietnam war was

1.2,4,5-T, NAA and ethylene

2.2,4,-D and NAA

3.2,4,-D and 2,4,5-T

4.ethylene

Posted Date:-2019-04-07 23:25:12


Question:
Agrobacterium tumefaciens Ti plasmids t-DNA has genes for

1.Auxin and giberrellins

2.cytokinins and ethylene

3.Auxin and cytokinins

4.cytokinins and giberrellins

Posted Date:-2019-04-07 23:40:38


Question:
All are anti giberrellins except

1. phosphon D

2.acetosyringone

3.maleic hydrazide

4.None

Posted Date:-2019-04-08 14:42:02


Question:
All are natural auxins except

1.Phenoxy acetic acid

2.Indole-3-acetic acid

3.NAA

4.IAA

Posted Date:-2019-04-07 23:33:09


Question:
All are synthetic auxins except

1.2,4,5-T

2.2,4,-D

3.IAA

4.NAA

Posted Date:-2019-04-07 23:27:47


Question:
All the following hormones are growth inhibitors except

1.IAA

2.ethylene

3.dormin

4.Absiccic acid

Posted Date:-2019-04-07 23:22:18


Question:
All the following inhibits auxin transport (anti-auxins) except

1.ethylene

2.2,3,5-tri iodo benzoic acid

3.α naphthyl thalamic acid

4.Cytokinnin

Posted Date:-2019-04-07 23:26:10


Question:
Amyloplasts are

1.Tonoplast

2.Chloroplasts

3.Large starch grains

4.None

Posted Date:-2019-04-08 14:23:20


Question:
Antagonistic to gibberellins, flowering is promoted in short day plants by

1.Abscisic acid

2.Methane

3.Auxin

4.Gibberelin

Posted Date:-2019-04-08 14:27:25


Question:
Auxin is produced in

1.Growing root tips

2.Old roots

3.Growing shoot tips

4.Both A and C

Posted Date:-2019-04-08 14:21:14


Question:
Auxin transport is

1.polar

2.non-polar

3.apoplast

4.symplast

Posted Date:-2019-04-07 23:29:03


Question:
Bolting of some rosette plants is promoted by

1.giberellins

2.Auxin

3.ethane

4.None

Posted Date:-2019-04-08 14:32:15


Question:
Cell elongation in internodal regions of the green plants takes place due to

1.Gibberellin

2.Cytokinins

3.IAA

4.IBA

Posted Date:-2019-04-08 14:11:05


Question:
Coconut milk factor is

1.Cytokinin

2.Auxin

3.Auxin and cytokinins

4.Gibberelin

Posted Date:-2019-04-08 13:53:59


Question:
Coiling of garden pea tendrils around any support is an example of

1.Thigmotropism

2.Thermotaxis

3.Thigmotaxis

4.Thigmonasty

Posted Date:-2019-04-08 14:01:48


Question:
Cytokinins are

1.adenine derivatives

2.Guanine derivatives

3.Uracil derivatives

4.Thymine derivatives

Posted Date:-2019-04-07 23:35:38


Question:
Differentiation of shoot is controlled by

1.High cytokinin : auxin ratio

2.High auxin : cytokinin ratio

3.High gibberellin : auxin ratio

4.High gibberellin : cytokinin ratio

Posted Date:-2019-04-08 14:05:51


Question:
Gaseous plant hormone is

1.Gibberellin

2.IAA

3.Abscisic acid

4.Ethylene

Posted Date:-2019-04-08 14:04:36


Question:
Gibberelins sometimes substitute for

1.blue light

2.red light

3.green light

4.yellow light

Posted Date:-2019-04-08 14:28:30


Question:
Gibberellins are produced commercially from

1.Virus culture

2.Plant culture

3.Bacterial culture

4.Fungal culture

Posted Date:-2019-04-08 14:26:08


Question:
Gibberellins was named after a fungus known as

1.Gibberella fujikuroi

2.Gibberella gaditijirrii

3.Gibberella africana

4.Gibberella acuminata

Posted Date:-2019-04-08 14:39:50


Question:
IAA is

1.indole acetic acid

2.Iodine acetic acid

3.initiator acetic acid

4.None

Posted Date:-2019-04-08 14:33:52


Question:
Importance of day length in flowering of plants was first shown in

1.Tobacco

2.Petunia

3.Letting

4.None

Posted Date:-2019-04-08 13:58:56


Question:
Name the plant hormone which is formed in injured cells for healing of damage part ?

1.Auxin

2.Gibberelin

3.Cytokinin

4.None of the above

Posted Date:-2019-04-08 13:45:20


Question:
Name the plant hormone which is help in breaking the dormancy of plant?

1.Auxin

2.Auxin and Gibberellin

3.Gibberellin

4.None

Posted Date:-2019-04-08 13:42:06


Question:
Name the plant hormone which is helpful in making RNA and protein?

1.Cytokinins

2.Traumatic

3.Auxin and cytokinins

4.Auxin only

Posted Date:-2019-04-08 13:39:33


Question:
Natural cytokinins are synthesized in tissues that are

1.Senescent

2.Storing food material

3.Dividing rapidly

4.Differentiating

Posted Date:-2019-04-08 14:03:28


Question:
Nodule formation is induced by

1.IAA

2.IBA

3.NAA

4.Both (A) and (C)

Posted Date:-2019-04-07 23:32:14


Question:
Opening of floral buds into flowers, is a type of

1.Autonomic movement of growth

2.Autonomic movement of variation

3.Autonomic movement of locomotion

4.None

Posted Date:-2019-04-08 14:07:02


Question:
Phototropic curvature is the result of uneven distribution of

1.Auxin and giberrellins

2.Auxin

3.Gibberellin

4.Cytokinins

Posted Date:-2019-04-08 14:00:27


Question:
Plant hormone which is help in the cell division and development in the presence of auxins

1.Auxin

2.cytokinins and ethylene

3.Gibberellin

4.Cytokinnin only

Posted Date:-2019-04-08 13:46:47


Question:
Plant hormone which is responsible for environmental stress and dormancy is 

1.Abscisic acid

2.Auxin

3.Cytokines

4.IBA

Posted Date:-2019-04-08 14:19:19


Question:
Plant hormone which is responsible for saving the crops from falling

1.Cytokinin

2.Ethylene

3.Gybberellin

4.Auxin

Posted Date:-2019-04-08 13:34:19


Question:
Plant hormone which is responsible for the ripening of fruits

1.Florigens

2.Ethylene

3.Abscisic Acid

4.Gybberellin

Posted Date:-2019-04-08 13:37:45


Question:
Precursor of Indole acetic acid (natural auxin) is

1.Glycine

2.Methionine

3.Isopentynyl pyrophosphate

4.Tryptophan

Posted Date:-2019-04-07 23:21:21


Question:
Seed dormancy is due to the

1.Abscisic acid

2.Auxin

3.Gibberelin

4.None

Posted Date:-2019-04-08 13:58:08


Question:
Sprouting of potatoes is inhibited by

1.2,4 D

2.IAA

3.IBA

4.Cytokinin

Posted Date:-2019-04-08 14:35:53


Question:
Stem elongation is controlled through

1.Auxin

2.Gibberellins

3.Auxin and cytokinins

4.None

Posted Date:-2019-04-08 14:22:32


Question:
Synthetic auxin is

1.NAA

2.GA

3.IBA

4.Both A and C

Posted Date:-2019-04-08 13:56:11


Question:
The annular and spirally thickened conducting elements generally developed in the protoxylem when the root or stem is

1.Maturing

2.Differentiating

3.Widening

4.Elongating

Posted Date:-2019-04-08 14:07:59


Question:
The first kinetin isolated by Miller was from

1.maize grains

2.coconut endosperm

3.wheat grains

4.herring sperm DNA

Posted Date:-2019-04-07 23:38:32


Question:
The first natural cytokinin isolated from liquid endosperm was

1.zeatin

2.isopentanyl adenine

3.6-amino purine

4.6-isopentanyl aenine

Posted Date:-2019-04-07 23:39:42


Question:
The most studied gibberellin is

1. GA1

2.GA3

3.GA5

4.GA7

Posted Date:-2019-04-08 14:40:45


Question:
The plant hormone which is formed in leaves and helps in the blooming of the flowers

1.Auxin

2.gibberelin

3.Cytokinin

4.Florigens

Posted Date:-2019-04-08 13:43:25


Question:
The plant hormone which is found in gaseous form

1.Florigens

2.Gybberellin

3.Cytokinin

4.Ethylene

Posted Date:-2019-04-08 13:36:13


Question:
The term auxin was coined by

1.Skoog

2.Miescher

3.Haberlandt

4.F.W. Went

Posted Date:-2019-04-07 23:20:22


Question:
Weed killing is done by

1.IAA

2.IBA

3.2,4 D

4.None

Posted Date:-2019-04-08 14:30:06


Question:
Which of the following auxin is widely used as a selective weedicide

1.NAA

2.IBA

3.2,4,-D

4.2,4,5-T

Posted Date:-2019-04-07 23:27:05


Question:
Which of the following bioassays are used to detect the presence of auxin

1.Split pea stem curvature test and tobacco pith culture

2.Avena curvature test and tobacco pith culture

3.Avena curvature test and Split pea stem curvature test

4.tobacco pith culture only

Posted Date:-2019-04-07 23:30:06


Question:
Which of the following is a gaseous hormone

1.Abscicic acid

2.IBA

3.Ethylene

4.NAA

Posted Date:-2019-04-07 23:23:03


Question:
Which of the following is a natural cytokinin

1.isopentanyl adenine

2.zeatin

3.6-amino purine

4.6-isopentanyl aenine

Posted Date:-2019-04-07 23:37:29


Question:
Which of the following is an auxin receptor

1.ETR1

2.CBP1

3.ABP1

4.GRE

Posted Date:-2019-04-07 23:33:58


Question:
Which of the following is not a function of auxin

1.inducing callus formation

2.maintaining apical dominance

3.enhancing cell division

4.inducing dormancy

Posted Date:-2019-04-07 23:30:52


Question:
Which of the following is widely used as a rooting hormone

1.2,4, D

2.NAA

3.cytokinnin

4.2,4,5-T

Posted Date:-2019-04-07 23:24:08


Question:
Which of the following statement is incorrect ?

1.Auxins are produced at the region of elongation

2.Auxins are the most important plant hormone

3.Auxins are also important in regulating the fall of leaves and fruits

4.IAA is a principal auxin

Posted Date:-2019-04-08 13:40:43


Question:
Which of the plant hormone increases the activity of cambium in the wooden plants?

1.Florigens

2.Gibberellins

3.Cytokinins

4.Auxin and Gibberelin

Posted Date:-2019-04-08 13:48:07


Question:
Which one of the following pairs, is correctly matched

1.IAA – Cell wall elongation

2.Abscisic acid – Stomatal closure

3.Cytokinin – Cell division

4.All

Posted Date:-2019-04-08 14:12:08


More MCQS

  1. Cells
  2. Bacteriology
  3. Plant harmones
  4. Transport and Mineral Nutrition in Plants
  5. Photosynthesis in Plants
  6. Plant respiration
  7. Algae, Bryophytes, Pteridophytes
  8. Plant Pathology - I
  9. Plant Pathology - II
  10. Kingdom Monera
  11. Wood Anatomy, Xylem and Phloem
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