InterviewSolution
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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 201. |
If a tree flowers thrice in a year (October, January and july) in nothern india, it is said to beA. Photo- and thermo-sensitiveB. Photo- and thermo-insensitiveC. Photosensitive but thermo-insensitiveD. Thermosensitive but photo-insensitive. |
| Answer» Correct Answer - B | |
| 202. |
Gibberellins induceA. Cell divisionB. Leaf senescenceC. Hydrolysing enzymes in germinating seedsD. Flowering |
| Answer» Correct Answer - C | |
| 203. |
Which of the following is not caused by deficiency of mineral nutritionA. ChlorosisB. Internode shorteningC. NecrosisD. Etiolation. |
| Answer» Correct Answer - D | |
| 204. |
Bulliform cells in Grass leaves showA. Growth movementsB. Tropic movementC. Nastic movementsD. Turgor movements. |
| Answer» Correct Answer - D | |
| 205. |
Differentiation of callus requires a specific ratio of two hormonesA. Auxin and gibberellinB. Auxin and abscisic acidC. Gibberellin and abscisic acidD. IAA and cytokinin. |
| Answer» Correct Answer - D | |
| 206. |
Rapid growth of flowering axis in many plants is caused byA. Lower level of abscisic acidB. Higher level of auxinC. Higher level of gibberellinD. Lower level of auxin. |
| Answer» Correct Answer - C | |
| 207. |
Phytochrome isA. Pigment that controls photomorphog-enesis and developmentB. Regulatory protein that controls dark dependent development processes.C. HormoneD. Photosynthetic hormone. |
| Answer» Correct Answer - A | |
| 208. |
Which one shows red `hArr` far-red interconversions?A. CarotenoidsB. CytochromesC. ChlorophyllsD. Phytochrome. |
| Answer» Correct Answer - D | |
| 209. |
Which one can absorb red and far-red light ?A. CaroteneB. XanthophyllC. ChlorophyllD. Phytochrome. |
| Answer» Correct Answer - D | |
| 210. |
In Red `(P_(x))` and Far-rad `(P_(fx))` (given alternately) responses of plants, it is theA. First treatment that is effectiveB. Middle treatment that is effectiveC. Last treatment that is importantD. Sum total of all treatments that counts. |
| Answer» Correct Answer - C | |
| 211. |
High C/N ratio producesA. Softer tissuesB. More mechanical tissuesC. More growth hormonesD. Growth inhibitors. |
| Answer» Correct Answer - B | |
| 212. |
Growth promoting hormone isA. 2, 4-DB. ABAC. GibberellinD. IAA. |
| Answer» Correct Answer - D | |
| 213. |
Growth is maximum in zone ofA. Cell elongationB. Cell divisionC. Cell maturationD. All the above. |
| Answer» Correct Answer - A | |
| 214. |
Which one is not a growth promoter ?A. ABAB. GAC. IAAD. CK. |
| Answer» Correct Answer - A | |
| 215. |
Which one is the test for gibberellin ?A. Bolting in CabbageB. Morophogenesis in tobacco callusC. Rapid divisions in Carrot cellsD. Elongation of Oat coleoptile. |
| Answer» Correct Answer - A | |
| 216. |
Leaf abscission is promoted byA. EthyleneB. Abscisic acidC. CytokininD. Tryptophan. |
| Answer» Correct Answer - A | |
| 217. |
Which does not take place in short day plants ?A. An interrupted critical dark periodB. Critical period is interrupted by lightC. Dark period is interrupted by red light followed by far-red lightD. Critical period is not interrupted by white or red light. |
| Answer» Correct Answer - B | |
| 218. |
Thermonastic movement is related toA. LightB. TouchC. ChemicalD. High temperature. |
| Answer» Correct Answer - D | |
| 219. |
Crescograph was prepared byA. BoseB. PfefferC. GanongD. Dixon. |
| Answer» Correct Answer - A | |
| 220. |
Fruit ripening is accelerated byA. Warm surroundingsB. Increased nitrogen supplyC. Reduced water supplyD. Ethylene rich atmosphere. |
| Answer» Correct Answer - D | |
| 221. |
Control of leaf, flower and fruit abscission and promotion of fruit ripening are functions ofA. EthyleneB. AuxinC. GibberellinD. Cytokinin. |
| Answer» Correct Answer - A | |
| 222. |
Plant hormone controlling fruit ripening isA. IAAB. GAC. EthyleneD. Kinetin |
| Answer» Correct Answer - C | |
| 223. |
Which combination is used in fruit ripening ?A. `80%CH_(4)+20%O_(2)`B. `80%C_(2)H_(2)+20%CO_(2)`C. `80%CO_(2)+20%C_(2)H_(4)`D. `80%CH_(4)+20%CO_(2)`. |
| Answer» Correct Answer - C | |
| 224. |
Which one among the following chemical is wued for causing defoliation of for causing defoliation of forest treesA. Phosphon DB. Maleic hydrazideC. AMO 1618D. 2, 4-D |
| Answer» Correct Answer - D | |
| 225. |
An excised leaf does not turn yellow if it is induced to root this is attributed to sythesis in root of or Leaf aging is retared by Or The cut flowers and vegetable can be kept be fresh a long period by hios plant horemoneA. EthyleneB. GytokininsC. GibberellinsD. Auxins. |
| Answer» Correct Answer - B | |
| 226. |
Cut or excised leaves remain green for long if induced to root of dipped inA. GibberellinsB. CytokininsC. AuxinsD. Ethylene. |
| Answer» Correct Answer - B | |
| 227. |
Movements in Mimosa pudica are due to turgor changes inA. Pulvinus and pulvinnulesB. Pinna and pinnulesC. Leaf and leafletsD. Petiole and rachis. |
| Answer» Correct Answer - A | |
| 228. |
Stimulus in Mimosa pudica travels in the form ofA. AuxinB. HormoneC. AlcoholD. None of the above. |
| Answer» Correct Answer - B | |
| 229. |
Shock movements of leaves of Sensitive Plant, Mimosa pudica, areA. ThermonastyB. SeismonastyC. HydrotropismD. Chemonasty. |
| Answer» Correct Answer - B | |
| 230. |
Photoperiodic stimulus is perceived byA. LeavesB. FlowersC. BudsD. Meristem. |
| Answer» Correct Answer - A | |
| 231. |
Geotropic response is perceived byA. Mature rootsB. Elongating cellsC. Root capD. Root hairs. |
| Answer» Correct Answer - C | |
| 232. |
Tendrils exhibit/twining of tendrils is due toA. ThigmotropismB. SeismonastyC. HeliotropismD. Diageotropism. |
| Answer» Correct Answer - A | |
| 233. |
Geotropic response of roots is due toA. Inhibition of stem growthB. More growth on lower sideC. More growth upper sideD. Uniform growth. |
| Answer» Correct Answer - C | |
| 234. |
Photoropic and geotropic movements are linked toA. GibberellinsB. EnzymesC. AuxinD. Cytokinin. |
| Answer» Correct Answer - C | |
| 235. |
Phototropism is shoots is attributed to or photoropic movements are due toA. AuxinB. GibberellinsC. CytokininD. Abscisic acid. |
| Answer» Correct Answer - A | |
| 236. |
Bioassay of IAA isA. Avena curvature testB. Callus testC. Leaf disc testD. `alpha`-amylase test. |
| Answer» Correct Answer - A | |
| 237. |
Ethylene is aA. A gaseous metaboliteB. A gaseous enzymeC. A gaseous hormoneD. A solid hormone. |
| Answer» Correct Answer - C | |
| 238. |
Naturally occurring auxin isA. NAAB. 2, 4-DC. MHD. IAA |
| Answer» Correct Answer - D | |
| 239. |
Auxanometer is required forA. Studying rate of transpirationB. Measuring rate of respirationC. Finding out rate of photosynthesisD. Calculating rate of growth |
| Answer» Correct Answer - D | |
| 240. |
Gibberellins promoteA. Seed dormancyB. Leaf fallC. Seed germinationD. Root elongation. |
| Answer» Correct Answer - C | |
| 241. |
The chemical nature of gibberellins is that they areA. ProteinaceousB. AminesC. AcidicD. Alkaline. |
| Answer» Correct Answer - C | |
| 242. |
Abscisic acid promotesA. Flower initiationB. Triple responseC. Stem elongationD. Detachment of leaf, flower and fruit. |
| Answer» Correct Answer - D | |
| 243. |
Which of the following is not a natural auxinA. Indole acetic acidB. Naphthalene acetic acidC. Indole acetaldehydeD. Indole ethanol. |
| Answer» Correct Answer - B | |
| 244. |
The hormone that promotes rapid elongation of intermodes or leaf base in deep water rice plant is ………..A. Abscisic aicdB. EthyleneC. CytokininD. Gibberellin. |
| Answer» Correct Answer - B | |
| 245. |
Which is not an influence of auxinsA. Tropical movementsB. BoltingC. ParthenocarpyD. Apical dominance. |
| Answer» Correct Answer - B | |
| 246. |
Which is not a function of cytokinin ?A. Delay is senescenceB. Breaking seed dormancyC. Promoting bud dormancyD. Promoting stomatal opening. |
| Answer» Correct Answer - C | |
| 247. |
Assertion.Plant growth regulators are very important for plant growth and development Reason. Auxins do not induce flowering in gymnosperms.A. Point out if both are true with reason being correct explanationB. both true but reason not correct explanationC. assertion true but reason wrongD. both are wrong. |
| Answer» Correct Answer - B | |
| 248. |
Boioassary for auxin isA. Dwarf maize testB. Avena curvature testC. Cell division testD. Green leaf test. |
| Answer» Correct Answer - B | |
| 249. |
Hormone produced during leaf fall isA. CytokininB. FlorigenC. ABAD. IAA. |
| Answer» Correct Answer - C | |
| 250. |
Auxins are abundantly produced inA. ShootB. Meristematic region of stemC. RootD. Leaf buds. |
| Answer» Correct Answer - B | |