321 + Interview Questions in PLANT-GROWTH-AND-MOVEMENTS IN GENERAL AWARENESS Page 6 InterviewSolution

251.	Fruit drop is prevented by sprayingA. AuxinB. EthyleneC. GibberellinsD. Cytokinins.
Answer» Correct Answer - A

Discussion

252.	Which of the following ion is pulled out in apoplast by the auxin during growthA. `K^(+)`B. `H^(+)`C. `Na^(+)`D. `Mg^(2+)`.
Answer» Correct Answer - B

Discussion

253.	Bakane disease of Rice is due toA. NAAB. 2, 4-DC. IAAD. GA.
Answer» Correct Answer - D

Discussion

254.	Foolish seedling desease/bakane of Rice helped in discovary of hormoneA. GibberellinB. IAAC. EthyleneD. Cytokinin
Answer» Correct Answer - A

Discussion

255.	Flowering dependent on cold treatment isA. CyotherapyB. CryogenicsC. CryoscopyD. Vernalisation.
Answer» Correct Answer - D

Discussion

256.	Darwin and Darwin discovered that Canary Grass coleoptile bends towards light only whenA. It is 5 cm longB. The seedling is growing in blue lightC. Coleoptile tip is intact and exposed to lightD. Nights are cooler.
Answer» Correct Answer - C

Discussion

257.	Match the columns and choose the correct option `{:(" I"," II"),("(p) Control of weeds","(i) Gibberellin"),("(q) Induction of","(ii) Cytokinin"),(" germination",),("(r) Ripening of fruit","(iii) 2, 4-D"),("(s) Delaying of senescence","(iv) Ethylene"):}`A. `p-ii, q-iv, r-iii, s-i`B. `p-iii, q-i, r-iv, s-ii`C. `p-i, q-ii, r-iv,s-ii`D. `p-ii, q-iii, r-i, s-iv`
Answer» Correct Answer - B

Discussion

258.	Which plant hormone was discovered as kinetinA. ABAB. EthyleneC. AuxinD. Cytokinin.
Answer» Correct Answer - D

Discussion

259.	Which growth regulator promotes root initiation, flowering and induced parthenocarpyA. GibberellinB. AuxinC. CytokininD. Ethylene.
Answer» Correct Answer - B

Discussion

260.	Auxin develops at the tip of the stem. Its movement is largelyA. AcropetalB. CentropetalC. BasipetalD. Acropetal and basipetal.
Answer» Correct Answer - C

Discussion

261.	Match the columns and choose the correct combination : `{:(," I",," II"),((a),"Cytokinin",(p),"Stress hormone"),((b),"Auxins",(q),"Ripening of fruits"),((c),"Abscisic acid",(r),"Apical dominance"),((d),"Ethylene",(s),"Bolting"),(,,(t),"Richmond-Lang Effect"):}`A. a-t, b-r, c-p, d-qB. a-t, b-r, c-p, d-sC. a-r, b-s, c-q, d-pD. a-q, b-s, c-t, d-r
Answer» Correct Answer - A

Discussion

262.	Photomorphogenetic pigment in plants isA. Phytochrome systemB. ChlorophyllC. CaroteneD. Chalcone pigment.
Answer» Correct Answer - A

Discussion

263.	Seed domarncy can be broken by the following combination of chemicalsA. `GA_(3)`, IAA, ABAB. `KNO_(3), GA_(3)` and ethylene chlorohydrinC. NAA, 2, 4, 5-T and IAAD. ABA, BAP and `GA_(3)`
Answer» Correct Answer - B

Discussion

264.	Artificial ripening of fruits/banana is accomplished by treatment withA. Sodium chlorideB. IAAC. Ethylene gasD. Kinetin.
Answer» Correct Answer - C

Discussion

265.	Which wavelengths are the most effective in photoperiodism ?A. Green and yellowB. Blue and redC. Blue and violetD. Red and far-red.
Answer» Correct Answer - D

Discussion

266.	Assertion: Plant growth as a whole is indefinete. Reason : Plants retain the capacity of continuous growth throughout their life.A. Point out if both are true with reason being correct explanationB. both are true but reason is not correct explanationC. assertion is true but reason is wrongD. and both are wrong
Answer» Correct Answer - A

Discussion

267.	Growth hormone reponsible for apical dominance isA. AuxinB. CytokininC. GibberellinD. Ethylene.
Answer» Correct Answer - A

Discussion

268.	Which one of the following respones of plants to growth hormone is true for ethyleneA. Decrease in flower abscissionB. Decreases in femalenessC. Increase in fruit ripeningD. Increase in cell elongation.
Answer» Correct Answer - C

Discussion

269.	During drought, plants develop hormoneA. Indole acetic acidB. Naphthalene acetic acidC. Indolebutyric acidD. Abscisic acid.
Answer» Correct Answer - D

Discussion

270.	Plants which daily require shorter period of darkness for flowering are calledA. Short day plantsB. Long day plantsC. Normal day plantsD. Ephemeral plants
Answer» Correct Answer - B

Discussion

271.	The term phytochrome was introduced byA. Borthwick and HendricksB. BothwickC. MooreD. Garner and Allard.
Answer» Correct Answer - A

Discussion

272.	Photoperiodism is associated with the formation ofA. ChlorophyllB. FlorigenC. AuxinD. Gibberellin.
Answer» Correct Answer - B

Discussion

273.	Which of the following harmones can replace vernalization or Genetic dwarfness can be overcome by treating withA. CytokininB. Gibberellic acidC. AuxinD. Antigibberellin.
Answer» Correct Answer - B

Discussion

274.	Hormone responsible for vernalization isA. FlorigenB. ColchicineC. AbscisinD. Vernalin
Answer» Correct Answer - D

Discussion

275.	Lettuce seeds germinate only whenA. Red light is availableB. Blue light is availableC. Green light is availableD. They are sown deep in the soil.
Answer» Correct Answer - A

Discussion

276.	Seismonasty occurs inA. Sammanea samanB. Albizzia lebbekC. Hibiscus rosa-sinensisD. Mimosa pudica.
Answer» Correct Answer - D

Discussion

277.	Falling of floral parts, leaves and fruits from the mother plant is calledA. SenescenceB. AbscissionC. PhotoperiodismD. Vernalisation.
Answer» Correct Answer - B

Discussion

278.	A Pigment concerned with both floral induction and seed germination isA. FlorigenB. PlastocyaninC. PhytochromeD. Chlorophyll.
Answer» Correct Answer - C

Discussion

279.	Gibberellin facilitates seed germination by triggering the synthesis ofA. `alpha`-amylaseB. `beta`-amylaseC. Both A and BD. `alpha`-amylase and protease.
Answer» Correct Answer - D

Discussion

280.	Which statements are correct ? a - Cytokinins suppress the synthesis of chlorophyll b - Auxins control apical dominance c - Gibberellins promote shoot elongation d - Abscisic acid enables seeds to with-stand desiccation.A. a and b onlyB. b and c onlyC. a and c onlyD. b, c and d only
Answer» Correct Answer - D

Discussion

281.	Select the activites associated with gibberellins (a) Apical dominance (b) Good herbicides (c) Promote bolting (d) Delay senescence (e) Stimulate closure of stomata.A. a and b onlyB. b and c onlyC. b and d onlyD. c and d only.
Answer» Correct Answer - D

Discussion

282.	Induction of cell division activity and delay in senescence is caused byA. GibberellinB. AuxinC. CytokininD. Ethylene.
Answer» Correct Answer - C

Discussion

283.	Pick up correct statements (A) Cytokinins delay senescence (B) Auxine regulate apical dominance (C) Ethylene enhances seed germination (D) Gibberellins cause falling of immature leaves.A. a, cB. a,dC. a, bD. b, c
Answer» Correct Answer - C

Discussion

284.	One of the commonly used plant growth hormone in tea plantations isA. ZeatinB. ABAC. IAAD. Ethylene.
Answer» Correct Answer - C

Discussion

285.	Which one of the following is geseous growth regulator?A. IAAB. NAAC. IBAD. Ethylene.
Answer» Correct Answer - D

Discussion

286.	Identify the incorrect statement about ABA growth regulatorA. It increases the tolerance of plants against different stressesB. It acts as general plant growth inhibitor and inhibitor of metabolismC. It helps in seed maturation and dormancyD. It promotes morphogenesis and differentiation of shoots.
Answer» Correct Answer - D

Discussion

287.	A natural growth regulator isA. 2, 4-DB. BenzaldehydeC. NAAD. Ethylene.
Answer» Correct Answer - D

Discussion

288.	6-(4-Hydroxy-3 Methyl-trans-2-butenylamine) purine is also calledA. Methyl jasmonateB. ZeatinC. BrassinolideD. Triacontanol.
Answer» Correct Answer - B

Discussion

289.	Cholodony and Went effect is due toA. IAAB. GAC. CytokininD. ABA.
Answer» Correct Answer - A

Discussion

290.	Stomatal closure under stress conditions is due toA. IAAB. ABAC. IBAD. 2, 4-D
Answer» Correct Answer - B

Discussion

291.	Bending of shoot tip in the absence of light isA. ChlorosisB. EmasculationC. EtiolationD. Tanning.
Answer» Correct Answer - C

Discussion

292.	The hormone which reduces transpiration rate by inducing stomatal closure isA. EthyleneB. GibberellinC. ABAD. Cytokinin.
Answer» Correct Answer - C

Discussion

293.	Bending of tentacles of Drosera over the insect isA. ThigmonastyB. ThigmotropismC. ChemotropismD. Phototropism.
Answer» Correct Answer - A

Discussion

294.	On the basis of daily periodicity, stomatal movements are ofA. Four typesB. Three typesC. Two typesD. Five types.
Answer» Correct Answer - A

Discussion

295.	Movements of tentacles in Drosera areA. PhotonasticB. ThermonasticC. ThigmonasticD. Seismonastic.
Answer» Correct Answer - C

Discussion

296.	Leaves of many grasses are capable of folding and unfolding because theyA. Are very thinB. Are isobilateralC. Have specialised bulliform cellsD. Have parallel vascular bundles.
Answer» Correct Answer - C

Discussion

297.	In signoid growth curve, upper asymptote represents period ofA. EstablishmentB. Negative accelertionC. Positive accelerationD. Equilibrium.
Answer» Correct Answer - D

Discussion

298.	Effect of length of day (light duration) on flowering is calledA. ChemotropismB. PhotoropismC. PhotoperiodismD. Photonasty.
Answer» Correct Answer - C

Discussion

299.	Phytohormones areA. Chemicals regulating floweringB. Chemicals regulating secondary grwothC. Hormones regulating growth from seed to adulthoodD. Regulators synthesised by plants and influencing physiological processes.
Answer» Correct Answer - D

Discussion

300.	Assertion. Plants also have hormones called phytohormones. Reason. They increase the rate of reactions and thus always accelerate growth and other related changesA. Point out if both are true with reason being correct explanationB. both true but reason not correct explanationC. assertion true but reason wrongD. and both wrong.
Answer» Correct Answer - C

Discussion

Explore topic-wise InterviewSolutions in .

Fruit drop is prevented by sprayingA. AuxinB. EthyleneC. GibberellinsD. Cytokinins.

Which of the following ion is pulled out in apoplast by the auxin during growthA. `K^(+)`B. `H^(+)`C. `Na^(+)`D. `Mg^(2+)`.

Bakane disease of Rice is due toA. NAAB. 2, 4-DC. IAAD. GA.

Foolish seedling desease/bakane of Rice helped in discovary of hormoneA. GibberellinB. IAAC. EthyleneD. Cytokinin

Flowering dependent on cold treatment isA. CyotherapyB. CryogenicsC. CryoscopyD. Vernalisation.

Darwin and Darwin discovered that Canary Grass coleoptile bends towards light only whenA. It is 5 cm longB. The seedling is growing in blue lightC. Coleoptile tip is intact and exposed to lightD. Nights are cooler.

Which plant hormone was discovered as kinetinA. ABAB. EthyleneC. AuxinD. Cytokinin.

Which growth regulator promotes root initiation, flowering and induced parthenocarpyA. GibberellinB. AuxinC. CytokininD. Ethylene.

Auxin develops at the tip of the stem. Its movement is largelyA. AcropetalB. CentropetalC. BasipetalD. Acropetal and basipetal.

Photomorphogenetic pigment in plants isA. Phytochrome systemB. ChlorophyllC. CaroteneD. Chalcone pigment.

Seed domarncy can be broken by the following combination of chemicalsA. `GA_(3)`, IAA, ABAB. `KNO_(3), GA_(3)` and ethylene chlorohydrinC. NAA, 2, 4, 5-T and IAAD. ABA, BAP and `GA_(3)`

Artificial ripening of fruits/banana is accomplished by treatment withA. Sodium chlorideB. IAAC. Ethylene gasD. Kinetin.

Which wavelengths are the most effective in photoperiodism ?A. Green and yellowB. Blue and redC. Blue and violetD. Red and far-red.

Growth hormone reponsible for apical dominance isA. AuxinB. CytokininC. GibberellinD. Ethylene.

Which one of the following respones of plants to growth hormone is true for ethyleneA. Decrease in flower abscissionB. Decreases in femalenessC. Increase in fruit ripeningD. Increase in cell elongation.

During drought, plants develop hormoneA. Indole acetic acidB. Naphthalene acetic acidC. Indolebutyric acidD. Abscisic acid.

Plants which daily require shorter period of darkness for flowering are calledA. Short day plantsB. Long day plantsC. Normal day plantsD. Ephemeral plants

The term phytochrome was introduced byA. Borthwick and HendricksB. BothwickC. MooreD. Garner and Allard.

Photoperiodism is associated with the formation ofA. ChlorophyllB. FlorigenC. AuxinD. Gibberellin.

Which of the following harmones can replace vernalization or Genetic dwarfness can be overcome by treating withA. CytokininB. Gibberellic acidC. AuxinD. Antigibberellin.

Hormone responsible for vernalization isA. FlorigenB. ColchicineC. AbscisinD. Vernalin

Lettuce seeds germinate only whenA. Red light is availableB. Blue light is availableC. Green light is availableD. They are sown deep in the soil.

Seismonasty occurs inA. Sammanea samanB. Albizzia lebbekC. Hibiscus rosa-sinensisD. Mimosa pudica.

Falling of floral parts, leaves and fruits from the mother plant is calledA. SenescenceB. AbscissionC. PhotoperiodismD. Vernalisation.

A Pigment concerned with both floral induction and seed germination isA. FlorigenB. PlastocyaninC. PhytochromeD. Chlorophyll.

Gibberellin facilitates seed germination by triggering the synthesis ofA. `alpha`-amylaseB. `beta`-amylaseC. Both A and BD. `alpha`-amylase and protease.

Which statements are correct ? a - Cytokinins suppress the synthesis of chlorophyll b - Auxins control apical dominance c - Gibberellins promote shoot elongation d - Abscisic acid enables seeds to with-stand desiccation.A. a and b onlyB. b and c onlyC. a and c onlyD. b, c and d only

Select the activites associated with gibberellins (a) Apical dominance (b) Good herbicides (c) Promote bolting (d) Delay senescence (e) Stimulate closure of stomata.A. a and b onlyB. b and c onlyC. b and d onlyD. c and d only.

Induction of cell division activity and delay in senescence is caused byA. GibberellinB. AuxinC. CytokininD. Ethylene.

Pick up correct statements (A) Cytokinins delay senescence (B) Auxine regulate apical dominance (C) Ethylene enhances seed germination (D) Gibberellins cause falling of immature leaves.A. a, cB. a,dC. a, bD. b, c

One of the commonly used plant growth hormone in tea plantations isA. ZeatinB. ABAC. IAAD. Ethylene.

Which one of the following is geseous growth regulator?A. IAAB. NAAC. IBAD. Ethylene.

Identify the incorrect statement about ABA growth regulatorA. It increases the tolerance of plants against different stressesB. It acts as general plant growth inhibitor and inhibitor of metabolismC. It helps in seed maturation and dormancyD. It promotes morphogenesis and differentiation of shoots.

A natural growth regulator isA. 2, 4-DB. BenzaldehydeC. NAAD. Ethylene.

6-(4-Hydroxy-3 Methyl-trans-2-butenylamine) purine is also calledA. Methyl jasmonateB. ZeatinC. BrassinolideD. Triacontanol.

Cholodony and Went effect is due toA. IAAB. GAC. CytokininD. ABA.

Stomatal closure under stress conditions is due toA. IAAB. ABAC. IBAD. 2, 4-D

Bending of shoot tip in the absence of light isA. ChlorosisB. EmasculationC. EtiolationD. Tanning.

The hormone which reduces transpiration rate by inducing stomatal closure isA. EthyleneB. GibberellinC. ABAD. Cytokinin.

Bending of tentacles of Drosera over the insect isA. ThigmonastyB. ThigmotropismC. ChemotropismD. Phototropism.

On the basis of daily periodicity, stomatal movements are ofA. Four typesB. Three typesC. Two typesD. Five types.

Movements of tentacles in Drosera areA. PhotonasticB. ThermonasticC. ThigmonasticD. Seismonastic.

Leaves of many grasses are capable of folding and unfolding because theyA. Are very thinB. Are isobilateralC. Have specialised bulliform cellsD. Have parallel vascular bundles.

In signoid growth curve, upper asymptote represents period ofA. EstablishmentB. Negative accelertionC. Positive accelerationD. Equilibrium.

Effect of length of day (light duration) on flowering is calledA. ChemotropismB. PhotoropismC. PhotoperiodismD. Photonasty.

Phytohormones areA. Chemicals regulating floweringB. Chemicals regulating secondary grwothC. Hormones regulating growth from seed to adulthoodD. Regulators synthesised by plants and influencing physiological processes.