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.
| 1. |
Agent orange isA. Weedicide with dioxinB. Chemical used in luminous paintC. Biodegradable insecticideD. Colour used in fluorescent temp. |
| Answer» Correct Answer - A | |
| 2. |
Plants requiring exposure to light for less than the critical photoperiod for flowering areA. LDPB. DNC. IDPD. SDP |
| Answer» Correct Answer - D | |
| 3. |
What is the site of perception of photoperiod necessary for induction of flowering in plants? LeavesA. StemB. LeavesC. Shoot apexD. Floral meristem. |
| Answer» Correct Answer - B | |
| 4. |
Match the following and chose the correct combination `{:(, "Column I",,ColumnII),(A,"Zeation",1, "flowering hormone"),(B,"Florigen ",2,"synthethic auxin "),(C,IBA,3,"cytokinin"),(D,"NAA",4, "Natural auxin"):}`A. a - 3, b - 1, c - 4, d - 2B. a - 4, b - 1, c - 2, d - 3C. a - 3, b - 4, c - 1, d - 2D. a - 2, b - 1, c - 4, d - 3 |
| Answer» Correct Answer - A | |
| 5. |
Find the correct combination (A) DCMU ………Herbicide…….Inhibitor of non-cyclic electron transport (B) PMA…….Fungicide……..Reduces transpiration (C) Colchicine………Alkaloid……..Causes male sterility (D) Solnite-Sodium alginate……….Encapsulation of somatic embryos.A. a, bB. a, cC. b, cD. b, d |
| Answer» Correct Answer - A | |
| 6. |
The phenomenon wherein, the ovary develops into a fruit without fertilisation is calledA. ParthenogensisB. ParthenocarpyC. AposporyD. Apogamy. |
| Answer» Correct Answer - B | |
| 7. |
Which one hastens flowering in plantsA. StratificationB. ScarificationC. VernalisationD. Water deficit. |
| Answer» Correct Answer - C | |
| 8. |
The phenomenon which shortens vegetative period and hastens flowering isA. EtiolationB. VernalisationC. PhotoperiodismD. Parthenocarpy. |
| Answer» Correct Answer - B | |
| 9. |
Selaginella sperms swim towards archegonia. The phenomenon isA. ChemotaxisB. ChemotropismC. ChemonastyD. Thigmonasty |
| Answer» Correct Answer - A | |
| 10. |
Antherozoids are attracted towards archegonia in fern plant. The phenomenon isA. NyctinastyB. ChemonastyC. ThigmonastyD. Seismonasty. |
| Answer» Correct Answer - B | |
| 11. |
Ability of Venus Fly Trap to capture insects is due toA. Specialised 'muscle-like' cellsB. Chemical stimutation by preyC. Rapid turgor pressure changesD. Passive process requiring no special ability on the part of the plant. |
| Answer» Correct Answer - C | |
| 12. |
Plant hormone causing abscission of leaves, senescence, bud dormancy and inhibition of cell division isA. IAAB. EthyleneC. CytokininsD. ABA. |
| Answer» Correct Answer - D | |
| 13. |
Which hormone is responsible for apical growthA. IAAB. Abscisic acidC. GAD. All the above. |
| Answer» Correct Answer - a | |
| 14. |
The regulator which retards ageing/senescence of plant parts isA. CytokininB. AuxinC. GibberellinD. Abscisic acid. |
| Answer» Correct Answer - A | |
| 15. |
Hormone responsible for ageing isA. GAB. IAAC. ABAD. Cytokinin. |
| Answer» Correct Answer - C | |
| 16. |
Growth of lateral branches is promoted byA. Removal of axillary budsB. Auxin application over decapitated apexC. Auxin application over apical budD. Removal of apical bud. |
| Answer» Correct Answer - D | |
| 17. |
Ageing of leaves is promoted byA. EthyleneB. Abscisic acidC. CytokininsD. Auxin. |
| Answer» Correct Answer - B | |
| 18. |
`alpha`-amylase synthesis is promoted byA. IAAB. GAC. CytokininD. NAA. |
| Answer» Correct Answer - B | |
| 19. |
The primary and secondary growth of a shoot inhibited byA. AuxinB. GibberellinC. CytokininD. Abscisic acid. |
| Answer» Correct Answer - D | |
| 20. |
Flowering of Chrysanthemum is inhibited byA. IAAB. `GA_(3)`C. CytokininD. Ethylene. |
| Answer» Correct Answer - B | |
| 21. |
Flowering in some short day plants is promoted byA. AuxinsB. GibberellinsC. Cytokinins/ABAD. Ethylene. |
| Answer» Correct Answer - C | |
| 22. |
In short plants (SDP) flowering is induced byA. Photoperiod less than 12 hoursB. Photoperiod below a critical length and uninterrupted long nightC. Long nightD. Short photoperiod and interrupted long night. |
| Answer» Correct Answer - B | |
| 23. |
Flowering in short day plants is induced byA. Short days and interrupted long nightsB. Short day and uninterrupted long nightsC. Short nightsD. Long day with interrupted night. |
| Answer» Correct Answer - B | |
| 24. |
In short day plants, flowering is inhibited byA. Interruption of dark by white or red lightB. Dark interruption by far red lightC. Dark interruption by red light followed by far red lightD. Not possible |
| Answer» Correct Answer - A | |
| 25. |
Plants which disregard the requirement of a definite day length for flowering are calledA. Short day plantsB. Long day plantsC. Day neutral plantsD. Long-short day plants. |
| Answer» Correct Answer - C | |
| 26. |
The rosette habit of cabbage can be changed by applicaton ofA. GAB. IAAC. ABAD. CK. |
| Answer» Correct Answer - A | |
| 27. |
The rosette habit of cabbage can be changed by applicaton ofA. ABAB. IAAC. GAD. Ethephon. |
| Answer» Correct Answer - C | |
| 28. |
Biennials get changed into annuals byA. HormonesB. PhotoperiodismC. GraftingD. Vernalisation. |
| Answer» Correct Answer - D | |
| 29. |
According to statolith theory, a plant distinguishes up from down by means ofA. PhytochromeB. AmyloplastsC. Auxin distributionD. Ascent of sap. |
| Answer» Correct Answer - B | |
| 30. |
The response of different organisms to environmental rhythms of light and darkness is called:A. PhotoperiodismB. PhototropismC. PhototaxisD. Vernalisation. |
| Answer» Correct Answer - A | |
| 31. |
Pruning of plants promotes branchin becaues the axillary buds get sensitized toA. IAAB. EthyleneC. GibberellinD. Cytokinin. |
| Answer» Correct Answer - B | |
| 32. |
Induction of rooting in stem cutting would be most beneficial inA. MarchantiaB. WheatC. CuscutaD. Bougainvillea. |
| Answer» Correct Answer - D | |
| 33. |
Common biosynthetic inhibitor of GA isA. CCCB. Jasmonic acidC. Citric acidD. Lactic acid. |
| Answer» Correct Answer - A | |
| 34. |
Which one of the following is a natural growth inhibitor ?A. NAAB. ABA/EthyleneC. IAAD. GA. |
| Answer» Correct Answer - B | |
| 35. |
Each meristem influences other meristems. The phenomenon isA. AllometryB. Growth correctionC. Lag phaseD. Auxetic growth. |
| Answer» Correct Answer - B | |
| 36. |
Common inhibitor of germination isA. GAB. ABAC. Pantothenic acidD. Tartaric acid. |
| Answer» Correct Answer - B | |
| 37. |
The day neutral plant isA. TobaccoB. TomatoC. WheatD. Oat. |
| Answer» Correct Answer - B | |
| 38. |
Avena coleptile auxin isA. IBAB. Indole 3-lactic acidC. Indole 2-acetic acidD. Indole 3-acetic acid. |
| Answer» Correct Answer - D | |
| 39. |
The long-day plant isA. TomatoB. PotatoC. CottonD. Spinach. |
| Answer» Correct Answer - D | |
| 40. |
Avena coleoptilre test detects the presence ofA. GAB. ABAC. IAAD. NAA. |
| Answer» Correct Answer - C | |
| 41. |
When the dark period of short day plants is intrrupted by a brief exposure of light, then the plantA. Will not flower at allB. Flowers immediatelyC. Gives more flowersD. Turns into a long day plant. |
| Answer» Correct Answer - A | |
| 42. |
Avena curvature test was first of all done byA. J.C. BoseB. F.W. WentC. ThimannD. Skoog. |
| Answer» Correct Answer - B | |
| 43. |
The long-day plant isA. Wheat/SpinachB. SoyabeanC. TobaccoD. Xanthium |
| Answer» Correct Answer - A | |
| 44. |
Which of the following is a dicot weedicideA. 2, 4-DB. NAAC. IBAD. IAA. |
| Answer» Correct Answer - A | |
| 45. |
Effect of unilateral irradiation can be eliminated by keeping the plant in a clinostat inA. Horizontal positionB. Vertical positionC. Horizontal position and rotating it.D. Vertical position and rotating it. |
| Answer» Correct Answer - D | |
| 46. |
More concentration of auxin in horizontally placed plants, under the influence of gravity, occurs inA. Upper sideB. Lower sideC. Both upper and lower sideD. None of the above. |
| Answer» Correct Answer - B | |
| 47. |
Which is used as a weedicide ?A. Indole Acetic acidB. Napthalene Acetic acid (NAA)C. Indole Butyric acid (IBA)D. 2, 4-D. |
| Answer» Correct Answer - D | |
| 48. |
Photopropism is because of unequal distribution of auxin under the influence of unilateral (one sided) illumination as auxinA. Moves from illuminated side to shaded sideB. Synthesis is checked on illuminated sideC. Destroyed on illuminated and not on shaded sideD. All of the above. |
| Answer» Correct Answer - D | |
| 49. |
Which is used as a weedicide ?A. IAAB. NAAC. `GA_(3)`D. 2, 4-D. |
| Answer» Correct Answer - D | |
| 50. |
Movement stimulated by external factor isA. Spontaneous MovementB. Autonomic movementC. Physical movementD. Paratonic movement. |
| Answer» Correct Answer - D | |