Growth regulating herbicides that act simi lar to that of endogenous auxin (IAA) a). Benzoic acid b). pyridine carboxylic acid c). quinoline carboxylic acid d). All

Growth regulating herbicides that act simi lar to that of endogenous auxin (IAA)
a). Benzoic acid
b). pyridine carboxylic acid
c). quinoline carboxylic acid
d). All
by

1 Answer

Answer :

d). All
by

Related questions

Which type of herbicides act as growth pro moter under sub-lethal dose a). Phenoxys b). Triazines c). Ureas and uracils d). All

Description : Which type of herbicides act as growth pro moter under sub-lethal dose a). Phenoxys b). Triazines c). Ureas and uracils d). All

Last Answer : d). All

Which of the following statement is correct? (1) The causal organism for foolish seedling disease is the source of gibberellin (2) Abscisic acid is a growth promoter (3) The ratio of auxin : cytokinin control cell differentiation (4) Bolting of cabbage can be induced by treatment with IAA

Description : Which of the following statement is correct? (1) The causal organism for foolish seedling disease is the source of gibberellin (2) Abscisic acid is a growth promoter (3) The ratio of auxin : cytokinin control cell differentiation (4) Bolting of cabbage can be induced by treatment with IAA

Last Answer : Ans. ((d))

Dr. F. Went noted that if coleoptile tips were removed and placed on agar for one hour, the agar would produce a bending when pla(a) It made possible the isolation and exact identification of auxin. (b) It is the basis for quantitative determination of small amounts of growth-promoting substances. (c) It supports the hypothesis that IAA is auxin. (d) It demonstrated polar movement of auxinsced on one side of freshly-cut coleoptile stumps. Of what significance is this experiment?

Description : Dr. F. Went noted that if coleoptile tips were removed and placed on agar for one hour, the agar would produce a bending when placed on one side of freshly-cut coleoptile stumps. Of what ... . (c) It supports the hypothesis that IAA is auxin. (d) It demonstrated polar movement of auxins

Last Answer : (a) It made possible the isolation and exact identification of auxin.

Prohexadione calcium a plant growth regu lator affect efficacy of which of the following herbicides in peanut a). acifluorfen b). bentazon c). imazethapyr d). None

Description : Prohexadione calcium a plant growth regu lator affect efficacy of which of the following herbicides in peanut a). acifluorfen b). bentazon c). imazethapyr d). None

Last Answer : d). None

Which herbicide’s mode of action is root growth inhibition? a). Fluchloralin b). MCPA c). Glyphosate d). Alachlor

Description : Which herbicide’s mode of action is root growth inhibition? a). Fluchloralin b). MCPA c). Glyphosate d). Alachlor

Last Answer : d). Alachlor

. In india herbicides are registered un der which of the following Act a). Herbicide Registration Act b). Insecticide Act, 1968 c). Environment Policy, 2005 d). Indian Agrochemicals Registration Act

Description : . In india herbicides are registered un der which of the following Act a). Herbicide Registration Act b). Insecticide Act, 1968 c). Environment Policy, 2005 d). Indian Agrochemicals Registration Act

Last Answer : b). Insecticide Act, 1968

The major auxin produced in plants is: a. Indole-3-butyric acid (IBA) b. Naphthalene acetic acid (NAA) c. Indole-3-acetic acid (IAA) d. Ethylene

Description : The major auxin produced in plants is: a. Indole-3-butyric acid (IBA) b. Naphthalene acetic acid (NAA) c. Indole-3-acetic acid (IAA) d. Ethylene

Last Answer : Indole-3-acetic acid (IAA)

You are given a tissue with its potential for differentiation in an artificial culture. Which of the following pairs of hormones would you add to the medium to secure shoots as well as roots? (a) IAA and gibberellin (b) Auxin and cytokinin (c) Auxin and abscisic acid (d) Gibberellin and abscisic acid

Description : You are given a tissue with its potential for differentiation in an artificial culture. Which of the following pairs of hormones would you add to the medium to secure shoots as well as roots? ... gibberellin (b) Auxin and cytokinin (c) Auxin and abscisic acid (d) Gibberellin and abscisic acid

Last Answer : (b) Auxin and cytokinin

Herbicides inhibiting amino acid synthesis a). Imadazolinone b). Sulfonamide c). aminoacid derivatives d). all

Description : Herbicides inhibiting amino acid synthesis a). Imadazolinone b). Sulfonamide c). aminoacid derivatives d). all

Last Answer : d). all

Goitrogenic substance present in cabbage is (A) 5-vinyl-2 thio oxalzolidone (B) Pyridine-3-carboxylic acid (C) 3-Hydroxy-4, 5-dihydroxymethyl1–2-methyl pyridine (D) δ-ALA dehydratase

Description : Goitrogenic substance present in cabbage is (A) 5-vinyl-2 thio oxalzolidone (B) Pyridine-3-carboxylic acid (C) 3-Hydroxy-4, 5-dihydroxymethyl1–2-methyl pyridine (D) δ-ALA dehydratase

Last Answer : Answer : A

An important benzoic acid herbicide a).Dicamba b). 2,4-D c). Atrazine d). None of these

Description : An important benzoic acid herbicide a).Dicamba b). 2,4-D c). Atrazine d). None of these

Last Answer : a).Dicamba

Which herbicide group inhibitor the photosynthesis reaction ? a). Thiocarbamates b). Triazines c). Cyclohexanedione d). Benzoic acid

Description : Which herbicide group inhibitor the photosynthesis reaction ? a). Thiocarbamates b). Triazines c). Cyclohexanedione d). Benzoic acid

Last Answer : b). Triazines

. Monocot are natural resistant to a). Triazine b). Pyrimidine c). Pyridine d). Atrazine

Description : . Monocot are natural resistant to a). Triazine b). Pyrimidine c). Pyridine d). Atrazine

Last Answer : a). Triazine

The first ever auxin discovered was: a. IBA b. IPA c. IAA d. None of above

Description : The first ever auxin discovered was: a. IBA b. IPA c. IAA d. None of above

Last Answer : IAA

To manage grassy weed flora in barley which of the herbicides is to be applied a). Pendimethalin b). Isoproturon c). a and b d). Metsulfuron

Description : To manage grassy weed flora in barley which of the herbicides is to be applied a). Pendimethalin b). Isoproturon c). a and b d). Metsulfuron

Last Answer : c). a and b

Which of the herbicides can be used in gram crop? a). Pendimethalin b). Metolachlor c). Fluchloralin d). All

Description : Which of the herbicides can be used in gram crop? a). Pendimethalin b). Metolachlor c). Fluchloralin d). All

Last Answer : d). All

To manage mixed weed flora in barley which of the herbicides is to be applied a).2,4-D b). Isoproturon c). a and b as tank mix d). None of these

Description : To manage mixed weed flora in barley which of the herbicides is to be applied a).2,4-D b). Isoproturon c). a and b as tank mix d). None of these

Last Answer : c). a and b as tank mix

When the weeds are under pressure, the herbicides enter the leaf a). less readily b). more readily c). do not enter d). entry not affected

Description : When the weeds are under pressure, the herbicides enter the leaf a). less readily b). more readily c). do not enter d). entry not affected

Last Answer : a). less readily

Which of the following pre-emergence her bicides can be applied with herbicides that have efficacy with emerged weeds a). Chloracitamide b). Thiocarbamates c). Dinitroanilines d). All

Description : Which of the following pre-emergence her bicides can be applied with herbicides that have efficacy with emerged weeds a). Chloracitamide b). Thiocarbamates c). Dinitroanilines d). All

Last Answer : d). All

Mid morning application of which of the herbicides is better than its evening applica tion a). Butachlor b). Alachlor c). Glyphosate d). Paraquat

Description : Mid morning application of which of the herbicides is better than its evening applica tion a). Butachlor b). Alachlor c). Glyphosate d). Paraquat

Last Answer : d). Paraquat

Herbicides disrupting cell membranes a). Bipyridilliums b). diphenylethers c). Both d). Ureas

Description : Herbicides disrupting cell membranes a). Bipyridilliums b). diphenylethers c). Both d). Ureas

Last Answer : c). Both

Application of organophosphorus group of pesticides along with which herbicides cause injury to crops a). Triazines b). Ureas c). Both d). None

Description : Application of organophosphorus group of pesticides along with which herbicides cause injury to crops a). Triazines b). Ureas c). Both d). None

Last Answer : c). Both

Persistence herbicides pose hazard in soil when a). High persistence herbicides are used b). Crop failure necessitate re-planting c). Susceptible crop follows a short crop d). All

Description : Persistence herbicides pose hazard in soil when a). High persistence herbicides are used b). Crop failure necessitate re-planting c). Susceptible crop follows a short crop d). All

Last Answer : d). All

At sub lethal dose which of the herbicides improves colour of the apple a). 2,4-D b). 2,4,5-T c). MCPA d). All of these

Description : At sub lethal dose which of the herbicides improves colour of the apple a). 2,4-D b). 2,4,5-T c). MCPA d). All of these

Last Answer : b). 2,4,5-T

Herbicides of which group are generally incorporated in soil? a). Carbamate b). Dinitroaniline c). Triazine d). Both a and b

Description : Herbicides of which group are generally incorporated in soil? a). Carbamate b). Dinitroaniline c). Triazine d). Both a and b

Last Answer : d). Both a and b

Which of the herbicides are classified as highly toxic a). Paraquat and diquat b). DNBP and DNOC c). 2,4,5-T and PCP d). All of these

Description : Which of the herbicides are classified as highly toxic a). Paraquat and diquat b). DNBP and DNOC c). 2,4,5-T and PCP d). All of these

Last Answer : d). All of these

Industrial weeds can be controlled by using a). Non selective herbicides b). Selective herbicides c). Soil sterilants d). Both a and c

Description : Industrial weeds can be controlled by using a). Non selective herbicides b). Selective herbicides c). Soil sterilants d). Both a and c

Last Answer : d). Both a and c

he earliest attempt to control weeds by herbicides was made in 1937 in Pun jab to control Carthamus oxyacantha by using a). Sulfosulfuron b). Atrazine c). Sodium arsenate d). 2,4-D

Description : he earliest attempt to control weeds by herbicides was made in 1937 in Pun jab to control Carthamus oxyacantha by using a). Sulfosulfuron b). Atrazine c). Sodium arsenate d). 2,4-D

Last Answer : c). Sodium arsenate

. An approach where bio-herbicides are used to control indigenous weed spe cies a). Inundative approach b). Inoculative approach c). Classical approach d). None of the above

Description : . An approach where bio-herbicides are used to control indigenous weed spe cies a). Inundative approach b). Inoculative approach c). Classical approach d). None of the above

Last Answer : a). Inundative approach

High levels of Adoption of herbicide resistant crops have dramatically ____________ the use of herbicides a).I ncreased b). Decreased c). No effect d). None of the above

Description : High levels of Adoption of herbicide resistant crops have dramatically ____________ the use of herbicides a).I ncreased b). Decreased c). No effect d). None of the above

Last Answer : a).I ncreased

Processes that break down the herbicides after application includes............................ a). Photo and microbial degradation b). adsorption and uptake c). leaching and runoff d). volatilization and run off

Description : Processes that break down the herbicides after application includes............................ a). Photo and microbial degradation b). adsorption and uptake c). leaching and runoff d). volatilization and run off

Last Answer : a). Photo and microbial degradation

factors to consider in improving the effectiveness of herbicides application a). Increasing management diversity b). application timing c). inherent efficacy of herbicide d). All

Description : factors to consider in improving the effectiveness of herbicides application a). Increasing management diversity b). application timing c). inherent efficacy of herbicide d). All

Last Answer : d). All

Herbicide Resistance can be managed through a). Stop to Use of herbicides with the same mechanism of action b). Use proactive weed control c). Use of post emergence herbicides with at least one mechanism of action d). All of the above

Description : Herbicide Resistance can be managed through a). Stop to Use of herbicides with the same mechanism of action b). Use proactive weed control c). Use of post emergence herbicides with at least one mechanism of action d). All of the above

Last Answer : d). All of the above

Multiple resistance is the phenomenon in which a weed is resistant to two or more herbicides having a). same mechanisms of action b). different mechanisms of action c). same chemistry d). different chemistry

Description : Multiple resistance is the phenomenon in which a weed is resistant to two or more herbicides having a). same mechanisms of action b). different mechanisms of action c). same chemistry d). different chemistry

Last Answer : b). different mechanisms of action

Sulfonylurea herbicides inhibits a). ALS b). EPSP synthase c). PSI d). PSII

Description : Sulfonylurea herbicides inhibits a). ALS b). EPSP synthase c). PSI d). PSII

Last Answer : a). ALS

Herbicides which avoids photodecomposition by being rapidly absorbed a.)Dinitroanilines b).Pinoxaden c).Sethoxydim d).quizalofop-p-ethyl

Description : Herbicides which avoids photodecomposition by being rapidly absorbed a.)Dinitroanilines b).Pinoxaden c).Sethoxydim d).quizalofop-p-ethyl

Last Answer : c).Sethoxydim

A farmer, in order to save one spraying operations mix herbicides, insecticide, fungicide etc. at the time of spray, to achieve this feature add a). Compatibility agents b). Spreaders c). Activators d). Adhesive

Description : A farmer, in order to save one spraying operations mix herbicides, insecticide, fungicide etc. at the time of spray, to achieve this feature add a). Compatibility agents b). Spreaders c). Activators d). Adhesive

Last Answer : a). Compatibility agents

Microbial breakdown of phenoxy herbicides such as 2,4-D and MCPA is enhanced by addition of a). Nitrate b). Sulphate c). Phosphate d). Chlorate

Description : Microbial breakdown of phenoxy herbicides such as 2,4-D and MCPA is enhanced by addition of a). Nitrate b). Sulphate c). Phosphate d). Chlorate

Last Answer : c). Phosphate

In soils with low fertility, the degradation of herbicides is a). Slow b). Constant c). Fast d). no effect

Description : In soils with low fertility, the degradation of herbicides is a). Slow b). Constant c). Fast d). no effect

Last Answer : a). Slow

Which of the following herbicides will be tightly bound to the soil? a). Trifluralin KOC(mL/g)= 7000 b). Paraquat KOC(mL/g)= 10,00,000 c). Glyphosate KOC(mL/g)= 24,000 d). Alachlor KOC(mL/g)= 124

Description : Which of the following herbicides will be tightly bound to the soil? a). Trifluralin KOC(mL/g)= 7000 b). Paraquat KOC(mL/g)= 10,00,000 c). Glyphosate KOC(mL/g)= 24,000 d). Alachlor KOC(mL/g)= 124

Last Answer : b). Paraquat KOC(mL/g)= 10,00,000

Herbicides are less effective on weeds under which of the soil condition a). Field capacity b). Saturated c). Both a and b d). Dry

Description : Herbicides are less effective on weeds under which of the soil condition a). Field capacity b). Saturated c). Both a and b d). Dry

Last Answer : d). Dry

Herbicides are more tightly bound to soils under which of the condition a). Field capacity b). Saturated c). Both a and b d). Dry

Description : Herbicides are more tightly bound to soils under which of the condition a). Field capacity b). Saturated c). Both a and b d). Dry

Last Answer : d). Dry

Herbicides prone to photodecomposition such as Trifluralin, monuron, chloramben and PCP should be applied in a). Morning b). Evening c). Afternoon d). all

Description : Herbicides prone to photodecomposition such as Trifluralin, monuron, chloramben and PCP should be applied in a). Morning b). Evening c). Afternoon d). all

Last Answer : b). Evening

Highly soluble herbicides like 2,4-D salt, Dalapon and TCA have to be avoided in which of the soil type a). Peat b). Red c). Clay d). Sandy

Description : Highly soluble herbicides like 2,4-D salt, Dalapon and TCA have to be avoided in which of the soil type a). Peat b). Red c). Clay d). Sandy

Last Answer : d). Sandy

The type of soils which require higher dose of herbicides to be effective is a). Inceptisols b). Histosols c). Oxisols d). Ultisols

Description : The type of soils which require higher dose of herbicides to be effective is a). Inceptisols b). Histosols c). Oxisols d). Ultisols

Last Answer : b). Histosols

Which herbicide is pre - plant applied herbicides ? a). Dalapon b). 2,4-D c). Alachlor d). All

Description : Which herbicide is pre - plant applied herbicides ? a). Dalapon b). 2,4-D c). Alachlor d). All

Last Answer : a). Dalapon

Change in molecular structure of applied herbicides inside the plant is known as a). Conjugation b). Metabolism c). Reverse metabolism d). Degradation

Description : Change in molecular structure of applied herbicides inside the plant is known as a). Conjugation b). Metabolism c). Reverse metabolism d). Degradation

Last Answer : b). Metabolism

Deactivation of herbicides in the plant system a). Conjugation b). Accumulation c). Secretion d). All e). None

Description : Deactivation of herbicides in the plant system a). Conjugation b). Accumulation c). Secretion d). All e). None

Last Answer : d). All

Physical removal/loss of herbicides a). Adsorption b). Hydrolysis c). Deamination d). Dealkylation

Description : Physical removal/loss of herbicides a). Adsorption b). Hydrolysis c). Deamination d). Dealkylation

Last Answer : a). Adsorption

In case of combined application of herbicides, application rate can be reduced in which of the following interaction a). Antagonistic b). Synergistic c). Additive d). None

Description : In case of combined application of herbicides, application rate can be reduced in which of the following interaction a). Antagonistic b). Synergistic c). Additive d). None

Last Answer : b). Synergistic