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.
| 751. |
What are antagonistic interactions . Cite a few examples . |
| Answer» An interaction harmful to one species is antagonistic interaction , e.g., amensalism , parasitism , predation. | |
| 752. |
What are crepuscular animals ? Cite an example . |
| Answer» Which are active at dusk and dawn (rabbit) . | |
| 753. |
How is a monoculture disadvantageous ? |
| Answer» Monoculture is likely to be completely distroyed by an infestation of an insect pest or by an epidermic of a fungal disease . | |
| 754. |
What is allelopathy ? Cite one example . |
| Answer» Suppression of growth of other species by chemicals (called allelochemicals) released from a plant . A substance juglone from walnut tree inhibits the growth of seedlings , including its own , under it . | |
| 755. |
Planktons move towards surface of water during night and descend to depth during day. This is klnown asA. diurnal migrationB. periodic migraionC. annual migrationD. None of the above |
| Answer» Correct Answer - A | |
| 756. |
How do protocooperation and mutualism resemble and differ ? |
| Answer» The two participating species are benefitted in both protocooperation and mutualism , but they can live equally well separately in the former and not in the latter. | |
| 757. |
Match Column I with Column II and choose correct option `{:(,"Column I ",,"Column II"),(,"(Depth of sea water)",,"(Algae type)"),(a, "Shallowest depth",(i) ,"Borwn algae"),(b., "Intermediate depth",(ii),"Green algae"),(c. ,"Greatest depth",(iii),"Red algae") :}`A. a(i),b(ii),c(iii)B. a(i),b(iii),c(ii)C. a(ii),b(i),c(iii)D. a(ii),b(iii),c(i) |
| Answer» Correct Answer - C | |
| 758. |
Match the following with correct combination `{:("Column" I ,, "Column" II) , (A. "Mutualism" ,, 1."Tiger and Deer") , (B. "Commensation " ,, 2."Cuscuta and Cissus") , (C."Parasitism" ,, 3."Sucker fish and shark "), (D. "Predation" ,, 4."Crab and sea anemone"):}`A. A-1 , B-2 , C-3 , D-4B. A-4 , B-3 , C-2 , D-1C. A-1 , B-3 , C-2 , D-4D. A-2 , B-3 , C-1 , D-4 |
| Answer» Correct Answer - B | |
| 759. |
Match Column I with Column II and choose correct option A. a(i),b(ii),c(iii)B. a(i),b(iii),c(ii)C. a(i),b(iii),c(i)D. a(iii),b(i),c(ii) |
| Answer» Correct Answer - C | |
| 760. |
Assertion: 99 per cent animals and nearly all plants are conformers. Reason: During the course of evolution, the costs and benefits of maintaining a constant internal environment are taken into consideration.A. If both assertion and reason are true and the reason is the correct explanation of the assertion.B. If both assertion and reason are true but reason is not the correct explanation of the assertion.C. If assertion is true but reason is false.D. If both assertion and reason are false. |
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Answer» Correct Answer - A 99 per cent animals and nearly all plants are conformers as during the course of evolution, the costs and benefits of maintaining a constant internal environment are taken into consideration. |
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| 761. |
Match Column I with Column II and choose correct option A. a(i),b(ii),c(iii)B. a(i),b(iii),c(ii)C. a(ii),b(i),c(iii)D. a(iii),b(i),c(ii) |
| Answer» Correct Answer - C | |
| 762. |
Assertion: Small animals tend to lose body heat very fast when it is cold outside. Reason: Small animals have a larger surface area relative to their volume.A. If both assertion and reason are true and the reason is the correct explanation of the assertion.B. If both assertion and reason are true but reason is not the correct explanation of the assertion.C. If assertion is true but reason is false.D. If both assertion and reason are false. |
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Answer» Correct Answer - A Small animals tend to lose body heat very fast when it is cold outside because small animals have a larger surface are relative to their volume. |
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| 763. |
Smaller animals tend to lose body heat very fast as compared to larger animals because they haveA. Higher surface to volume ratioB. Lower surface to volume ratioC. Equal values of surface and volumeD. Very low BMR (basal metabolic rate) |
| Answer» Correct Answer - A | |
| 764. |
If 8 invididuals in a laboratory population of 80 fruit flies died in a week, then what would be the death rate for population for the said period ? |
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Answer» Fruitflies in laboratory = 80 Fruitflies died in a week = 8 `therefore ` Death rate = `("Flies died")/("Total flies") xx 100 = (8)/(80) xx 100 = 10`%. |
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| 765. |
Assertion: Smaller the organism higher is the rate of metabolism per gram weight. Reason: The heart rate of a six-month-old baby is much lower than that of an old person.A. If both assertion and reason are true and the reason is a correct explanation of the assertion.B. If both assertion and reason are true but reason is not a correct explanation of the assertion.C. If the assertion is true but reason is false.D. If both the assertion and reason are false. |
| Answer» Correct Answer - B | |
| 766. |
Hydnilla, Potamogeton and Vallisneria areA. submerged hydrophytesB. floating hydrophytesC. emergent hydrophytesD. mesophytes |
| Answer» Correct Answer - A | |
| 767. |
The stage of suspended development shown by zooplanktons is called:A. diapauseB. hibernationC. aestivationD. None of these |
| Answer» Correct Answer - A | |
| 768. |
Assertion: Some orgainsms can maintain internal homeostasis by means of physiological processes and are called "regulates." Reason: Regulates can maintain internal homeostasis only up to a lilmit under stressful conditions.A. If both Assertion and Reason are true and the reason is correct explanation of the assertion, then mark (1).B. If both Assertion and Reason are true but the reason are true the reason is not the correct explanation of the assertion, then mark (2).C. If Assertion is true but Reason is false, then mark (3).D. If both Assertion and Reason are false, then mark (4). |
| Answer» Correct Answer - C | |
| 769. |
In stressful conditions some fungi canA. produce lots of sporesB. produce thin sporesC. produce thick-walled sporesD. undergo reproduction |
| Answer» Correct Answer - C | |
| 770. |
Aquatic plants generally have aA. well-developed vascular systemB. reduced vascular systemC. well-developed root systemD. well-developed stomatal system |
| Answer» Correct Answer - B | |
| 771. |
In aquatic environment, microscopic animals and plants are collectively known asA. CommensalsB. HerbivoresC. Fauna and FloraD. Planktons |
| Answer» Correct Answer - D | |
| 772. |
Edaphic factors are related toA. SoilB. ManC. AnimalsD. Temperature |
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Answer» Correct Answer - A Edaphic factors are related to soil. |
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| 773. |
Deciduous forests haveA. Variety of grassesB. Broad-leaved treesC. Narrow-leaved treesD. Variety and crocodiles |
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Answer» Correct Answer - B Decidous forests have broad-leaved trees. |
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| 774. |
Benthic animals liveA. Deep in seaB. FloatingC. SubmergedD. Active swimmers |
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Answer» Correct Answer - A Benthic animals live in deep in sea. |
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| 775. |
A plant devoid of roots isA. Wolffia/CeratophyllumB. VallisneriaC. HydrillaD. Azolla |
| Answer» Correct Answer - A | |
| 776. |
Root caps are present inA. EchhorniaB. RanunculusC. HydrillaD. Vallisneria |
| Answer» Correct Answer - B | |
| 777. |
Root pockets are present inA. EchhorniaB. RanunculusC. SagittariaD. Ceratophyllum |
| Answer» Correct Answer - A | |
| 778. |
The animal which captures and feeds on other animals is called aA. predatorB. preyC. parasiteD. host |
| Answer» Correct Answer - A | |
| 779. |
Predator play important role inA. Conduction of energy across trophic levelsB. Maintainance of species diversityC. Control of pry populationD. More than one option is correct |
| Answer» Correct Answer - D | |
| 780. |
Give one example for each of the following types (a) Migratory animal (b) Camouflaged animal `(c)`Predator animal (d) Biological control agent `(e)`Phytophagous animal (f) Chemical defense agent |
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Answer» (a) Migratory animal-American buffalo and dolphin. (b) Camouflaged animal-Grasshopper and chameleon. `(c)`Predatoranimal-Lion. (d) Biological control agent-Myxoma virus to kill European rabbit and Gambusia fish to check growth of mosquito larvae. (e) Phytophagous animal-Insects (beetle, butterfly, etc.). (f) Chemical defense agent-Cardiac glycosides. |
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| 781. |
Which of the following plants is not a predator plant?A. HydrillaB. DroseraC. UtriculariaD. Dionaea |
| Answer» Correct Answer - A | |
| 782. |
A predatorA. Is too efficient to overexploits its preyB. Helps in maintaining species diversity by increasing the intensity of competition among prey species.C. Acts as conduits for energy transfer across trophic levels.D. Shows (+,+) interaction with its prey |
| Answer» Correct Answer - C | |
| 783. |
Salt concentration (salinity) of the sea measured in parts per thousand is:A. `lt 5`B. `30-35`C. `gt 100`D. 43595 |
| Answer» Correct Answer - B | |
| 784. |
Assertion : Geneecology is the study of genetic composition and changes in relation to the origin of ecades , ecotypes , new sps. , etc . Reason: Autecology deals with the study of a group of organisms .A. If both A and R are true and R is the correct explanation of A .B. If both A and R are true but R is not the correct explanation of A .C. If A is true but R is false .D. If both A and R are are false . |
| Answer» Correct Answer - C | |