.This hormone is used in beer-brewing industry
1.Zeatin
2.Ethylene
3.Gibberellins
4.Abscissic acid
Posted Date:-2021-10-11 09:55:49
14.Bolting is useful to induce early flowering in
1.Medicinal plants
2.Oil yielding plants
3.Cereals
4.Ornamental plants
Posted Date:-2021-10-11 09:55:49
19.Only true natural auxin of higher plants is
1.GA
2.NAA
3.IAA
4.Neatin
Posted Date:-2021-10-11 09:55:49
A hormone like synthetic organic compound which in small amounts promotes or inhibits growth and development is called
1.Growth inhibitor
2.Growth regulator
3.Plant hormone
4.NAA
Posted Date:-2021-10-11 09:55:49
Ageing process of plants is delayed by
1.Auxins
2.Gibberellins
3.Cytokinins
4.NAA
Posted Date:-2021-10-11 09:55:49
An example of genetically identical cells of common origin is
1.Gamete
2.Zygote
3.Spore
4.Pollen
Posted Date:-2021-10-11 09:55:49
An example of synthetic plant growth regulator is
1.1AA
2.NAA
3.Auxin
4.CoA
Posted Date:-2021-10-11 09:55:49
An important plant hormone is
1.Androgen
2.Algin
3.Auxin
4.Ferrodoxin
Posted Date:-2021-10-11 09:55:49
An organic compound that retards growth is called
1.Growth regular
2.Plant hormone
3.Growth inhibitor
4.Auxin
Posted Date:-2021-10-11 09:55:49
An organic substance which is active in very minute quantity is
1.Plant hormone
2.Growth regulator
3.Growth inhibitor
4.IAA
Posted Date:-2021-10-11 09:55:49
Apical dominance caused by IAA is reserved by
1.Auxin
2.Gibberellin
3.NAA
4.Kinetin
Posted Date:-2021-10-11 09:55:49
Auxins produced by the apical buds suppress the growth of the
1.Terminal buds
2.Axillary buds
3.Lateral buds
4.Terminal flowers
Posted Date:-2021-10-11 09:55:49
Bolting is useful to induce early flowering in
1.Medicinal plants
2.Oil yielding plants
3.Cereals
4.Ornamental plants
Posted Date:-2021-10-11 09:55:49
Cell division of tobacco cells in tissue culture was stimulated by
1.NAA
2.Gibberellin
3.Kinetin
4.Auxin
Posted Date:-2021-10-11 09:55:49
Chemical name of Kinetin is
1.24-dichloro phenoxyacetic acid
2.Indole-3-acetic acid
3.Naphthalene-acetic acid
4.6-furfuryl amino purine
Posted Date:-2021-10-11 09:55:49
Coleoptile curvature test is used as a confirmation of the compound as
1.Gibberrellin
2.Cytokinin
3.Auxin
4.Zeatin
Posted Date:-2021-10-11 09:55:49
Cytokinins are not abundant in
1.Embryos
2.Developing fruits
3.Developing roots
4.Developing stems
Posted Date:-2021-10-11 09:55:49
Development of ovary into fruit without the act of fertilization is called
1.Parthenocarpy
2.Epicarpy
3.Endocarpy
4.Mesocarpy
Posted Date:-2021-10-11 09:55:49
Flowering can be induced in plants which require specific photo period by
1.Auxins
2.Gibberellins
3.Cytokinins
4.Ethylene
Posted Date:-2021-10-11 09:55:49
Flowering can be induced in plants which require specific photo period by
1.Auxins
2.Gibberellins
3.Cytokinins
4.Ethylene
Posted Date:-2021-10-11 09:55:49
Gibberellins were discovered in
1.Austria
2.Japan
3.Holland
4.Germany
Posted Date:-2021-10-11 09:55:49
Gibberellins were extracted from
1.Bacteria
2.Virus
3.Algae
4.Fungi
Posted Date:-2021-10-11 09:55:49
Growth and differentiation results in
1.Development
2.Retardation
3.Movement
4.Inhibition
Posted Date:-2021-10-11 09:55:49
Growth in length of plants can be measured by
1.Potometer
2.Mercury manometer
3.Light Screen
4.Lever auxanometer
Posted Date:-2021-10-11 09:55:49
Growth in plants is regulated through
1.Gene action
2.Biochemical parameters
3.Environmental conditions
4.All the three
Posted Date:-2021-10-11 09:55:49
In plants where IAA fails to induce parthenocarpy this hormone is used successfully
1.Ethylene
2.NAA
3.Gibberellins
4.Zeatin
Posted Date:-2021-10-11 09:55:49
Kinetin can promote bud or root formation in callus tissue in combination with
1.NAA
2.GA
3.24-D
4.IAA
Posted Date:-2021-10-11 09:55:49
Kinetin was isolated first from
1.Oat
2.Fungus
3.Zea mays
4.Herring
Posted Date:-2021-10-11 09:55:49
Limited type of growth is seen in this plant
1.Annul
2.Biennial
3.Perennial
4.Woody plants
Posted Date:-2021-10-11 09:55:49
Name of the instrument with a movable pointer fixed to a pulley and a graduated are fixed to a stand
1.Darwin�s photometer
2.Mercury manometer
3.Lever auxanometer
4.Light screen
Posted Date:-2021-10-11 09:55:49
Origin of parts or organs and the gross from of the plant is referred as
1.Gametogenesis
2.Morphogenesis
3.Organogenesis
4.Blastogenesis
Posted Date:-2021-10-11 09:55:49
Phototropic movements of plants were studied by
1.Went
2.Embden
3.Parnas
4.Darwin
Posted Date:-2021-10-11 09:55:49
Premature fall of leaves and fruits are prevented by
1.GA?
2.GA?
3.Zeatin
4.Auxin
Posted Date:-2021-10-11 09:55:49
Seedless fruits are produced by using
1.Cytokinin
2.Zeatin
3.Gibberellin
4.Auxin
Posted Date:-2021-10-11 09:55:49
Sigmoidal pattern of growth is seen in
1.Annuals
2.Biennials
3.Woody Perennials
4.Annuals and woody Perennials
Posted Date:-2021-10-11 09:55:49
The botanical name of fungus from which gibberellins were extracted
1.Avena
2.Mirabilis jalapa
3.Gibberella fujikuroi
4.Lathyrus odoratus
Posted Date:-2021-10-11 09:55:49
The botanical name of oat is
1.Avena
2.Antirrhinum
3.Cicer
4.Sorghum
Posted Date:-2021-10-11 09:55:49
The combination of hormones required to produce plantlets in tissue culture is
1.Auxin and ethylene
2.Kinetin and IAA
3.NAA and IAA
4.Kinetin and NAA
Posted Date:-2021-10-11 09:55:49
The Concentration of auxin required to promote cell enlargement along the longitudinal axis of stem is
1.0.1 M
2.0.001 M
3.1.001 M
4.0.001 M
Posted Date:-2021-10-11 09:55:49
The cytokinins isolated from endosperm of tender coconut is
1.Ethylene
2.Auxin
3.Zeatin
4.NAA
Posted Date:-2021-10-11 09:55:49
The following hormone stimulates respiration in plants is
1.GA1
2.Auxin
3.GA2
4.Cytokinin
Posted Date:-2021-10-11 09:55:49
The germination of potato tubers during storage is prevented by spraying
1.Gibberrellins
2.Auxin
3.Cytokinin
4.Ethylene
Posted Date:-2021-10-11 09:55:49
The hormone applied to hasten rooting in stem cutting of plants is
1.Ethylene
2.Giberrellin
3.Cytokinin
4.Auxin
Posted Date:-2021-10-11 09:55:49
The hormone that breaks dormancy in some light sensitive seeds is
1.Cytokinins
2.Auxin
3.Gibberellin
4.NAA
Posted Date:-2021-10-11 09:55:49
The hormone that breaks dormancy in some light sensitive seeds is
1.Cytokinins
2.Virus
3.Auxin
4.Gibberellin
Posted Date:-2021-10-11 09:55:49
The hormone that induces the formation of parthenocarpic fruits is
1.Auxin
2.Zeatin
3.IAA
4.Cytokinin
Posted Date:-2021-10-11 09:55:49
The hormone which breaks dormancy of buds is
1.IAA
2.Auxin
3.Cytokinin
4.Gibberellin
Posted Date:-2021-10-11 09:55:49
The hormone which causes apical dominance is
1.GAz
2.Zeatin
3.Auxin
4.Cytokinin
Posted Date:-2021-10-11 09:55:49
The internode elongation in rice plants is due to
1.Polyphagia disease
2.Bakanae disease
3.Hydrophobia disease
4.Polydypsia disease
Posted Date:-2021-10-11 09:55:49
The name of the disease caused by Gibberella fujikurai is
1.Bakanae
2.Cytokinesis
3.Polyphagia
4.Hydrophobia
Posted Date:-2021-10-11 09:55:49
The number of gibberellins isolated from different plant sources is
1.40
2.50
3.90
4.120
Posted Date:-2021-10-11 09:55:49
The pattern of growth in plan6ts shows
1.L shaped curve
2.straight curve
3.Triangle curve
4.S shaped curve
Posted Date:-2021-10-11 09:55:49
The period of declining growth and the organism maintains the size it has already achieved is called
1.Steady state phase
2.Log phase
3.Lag phase
4.Stable phase
Posted Date:-2021-10-11 09:55:49
The physiological properties of auxins are used in the field of
1.Agriculture
2.Horticulture
3.Medicine
4.Sericulture
Posted Date:-2021-10-11 09:55:49
The rapid growing phase of sigmoid curve is known as
1.Steady state phase
2.Log phase
3.Lag phase
4.Stable phase
Posted Date:-2021-10-11 09:55:49
The sigmoid growth curve contains
1.2 phases
2.3 phases
3.4 phases
4.5 phases
Posted Date:-2021-10-11 09:55:49
The steady state phase is followed by sentence and death in these plants
1.Annuals
2.Biennials
3.Annuals and Biennials
4.Perennials
Posted Date:-2021-10-11 09:55:49
The synthetic auxin used as herbicide is
1.Naphthalene-acetic acid (NAA)
2.Indole-3-acetic acid (IAA)
3.24-dichloro phenoxyacetic acid (2 4-D)
4.6-furfuryl amino purine
Posted Date:-2021-10-11 09:55:49
The transformation of genetically identical cells of common origin into different tissues is
1.Cell division
2.Enlargement
3.Cell differentiation
4.Movement
Posted Date:-2021-10-11 09:55:49
This is not a gibberelic acid
1.GA1
2.GA2
3.GA3
4.IAA
Posted Date:-2021-10-11 09:55:49
This is not the usual site of auxin formation in higher plants
1.Meristems
2.Enlarging tissues
3.Enlarging flowers
4.Enlarging young leaves
Posted Date:-2021-10-11 09:55:49
What is the net result of the metabolic processes going on in a plant
1.Respiration
2.Photosynthesis
3.Growth
4.Transpiration
Posted Date:-2021-10-11 09:55:49
Zeatin is isolated from
1.Gibberella fujikuroi
2.Zea mays
3.Avena
4.Oat
Posted Date:-2021-10-11 09:55:49