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. |
The interdependent evolution of flowering plants and pollinating insects together is known asA. mutualismB. coevolutionC. commensalismD. cooperation |
| Answer» Correct Answer - C | |
| 2. |
Considered the following four conditions (A-D) and select the correct pair of them as adaptation to environment in desert lizards. The conditions (a) Burrowing in soil to escape high temperature (b)Losing heat rapidly from the body during high temperature (c)Bask in sun when temperature is low (d)Insulating body due to thick fatty dermis optionsA. (iii),(iv)B. (i),(iii)C. (ii),(iv)D. (i),(ii) |
| Answer» Correct Answer - B | |
| 3. |
Consider the following statements (a-d) each with one or two blanks: (a) Bears go into (1) during winter to (2) cold weather. (b) A conical age pyramid with a broad base represent (3) human population. (c) A wasp pollinating a fig flower is an example of (4). (d) An area with high levels of species richness is known as (5) . Find the correct fill up words.A. (3) -stable (4) -commensalism, ble, (5) marshB. (1) - aestivation, (2) -escape ,(3) -stable, (4) -mutualismC. (3)-expanding , (4)-commensalism, (5), biodiversity parkD. (1)-hibernation, (2) -escape ,(3)-expanding , (5) hot spot. |
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Answer» Correct Answer - D 1. Hibernation. 2. Escape 3. Expanding 4. Mutualism 5. Hot spot |
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| 4. |
Competition for nutrients, food, light and space is more severe between twoA. closely related organisms growing in different nichesB. closely related organisms growing in ths same area/nicheC. distantly related organisms growing in the same habitatD. distantly related organisms growing in different niches. |
| Answer» Correct Answer - B | |
| 5. |
`10%` law of energy transfer in food chain was given by:A. StanleyB. TranleyC. LindemanD. Weismann |
| Answer» Correct Answer - C | |
| 6. |
A biologist studied the population of rats in a barn. He found that the average natality was 250, average mortality 240, immigration 20 and emigration 30. The net increase in populations is :A. `05`B. zeroC. `10`D. `15` |
| Answer» Correct Answer - B | |
| 7. |
Natality is the characteristic of population which means :A. the total number of individuals present per unit area at a given time.B. the increase in number of individuals in a population under given environmental conditions.C. loss of individuals due to death in a population under given environmental conditionsD. the movement of individuals into and out of population. |
| Answer» Correct Answer - B | |
| 8. |
Nekton areA. algaeB. floating plantsC. suspended lower plantsD. organisms that swim in water |
| Answer» Correct Answer - D | |
| 9. |
Ratio between mortality and natality is :A. vital indexB. population densityC. total countD. none of these |
| Answer» Correct Answer - A | |
| 10. |
Study the following statements about Adamsia and select your answer from the answer codes: 1. It is a parasite 2. It is an example of commensalims 3. It is called sea anemone 4. It is called hermit crab Answer codes :A. A and B are correctB. B and C are correctC. C and D are correctD. A and D are correct |
| Answer» Correct Answer - B | |
| 11. |
A compound produced by an organism which inhibits the growth of another organisms is :A. antisepticB. anitbioticC. antiallergicD. anticogulant |
| Answer» Correct Answer - B | |
| 12. |
In a population curve, the rate of growth be comes steady towards the end of exponential curve due toA. reproductive power is reducedB. environmental stressC. migrationD. all of these |
| Answer» Correct Answer - B | |
| 13. |
In order for the human population to achieve zero population growth which of the following must occur ?A. There must be more postreproductive individuals than reproductive individuals.B. There must be more prepreproductive than reproductive individualsC. There must be the same number prereproductive individuals as there are reproductive individuals.D. all of these |
| Answer» Correct Answer - C | |
| 14. |
Study of human population growth comes underA. demographyB. biographyC. dermatologyD. psychology |
| Answer» Correct Answer - A | |
| 15. |
If in a population showing sigmoid growth curve the value of K-N/K is 0.95 then what is true for this population.A. The carrying capacity has been nearly realizedB. The carrying capacity has not been substantially realized and it can accmmodate many more organismsC. The carrying capacity is only `50%` realizedD. Data is insufficient to comment anything |
| Answer» Correct Answer - B | |
| 16. |
The growth of human population showsA. sigmoid growth curveB. J-shaped growth curveC. fluctuating growth curveD. None of the above |
| Answer» Correct Answer - A | |
| 17. |
The logistic population growth is expressed by the equationA. `dt//d N=Nr((K-N)/(K))`B. `dN//d t=rN((K-N)/(K))`C. `d N //dt =Rn`D. `d N//dt =r N ((N-K)/(N))` |
| Answer» Correct Answer - B | |
| 18. |
An interaction between two individuals where one is benefitted while the other is neither benefitted nor harmed is called asA. AmensalismB. CommensalismC. PredationD. Mutualism |
| Answer» Correct Answer - B | |
| 19. |
Interaction between biotic and abiotic components leads to formation of a:A. societyB. populationC. speciesD. community |
| Answer» Correct Answer - D | |
| 20. |
In which of the following interaction both partners are adversely affected ?A. CompetitionB. PredationC. ParasitismD. Mutualism |
| Answer» Correct Answer - A | |
| 21. |
Obligate parasities are those organisms which :A. live only on living hostB. live only on dead and decaying organic matterC. are essentially saprophytes but also can become parasitesD. are essentially parasites but also can become saprophytes. |
| Answer» Correct Answer - A | |
| 22. |
Which organisms would be affected immediately after the withdrawal of `CO_2` from the bioshospere ?A. ProducersB. Tertiray consumersC. Primary consumersD. Secondary consumers |
| Answer» Correct Answer - A | |
| 23. |
A bird introduced form one country to another became a serious pest due toA. better adaptation to new areaB. more sexual reproductionC. better nesting habitsD. absence of natural competition. |
| Answer» Correct Answer - D | |
| 24. |
Organisms restricted to narrow range of temperature areA. Steno thermalB. BiothermalC. EurythermalD. Geothermal |
| Answer» Correct Answer - A | |
| 25. |
Which one of the following pairs of organisms are exotic species introduced in IndiaA. Lantana camara, water hyacinthB. water hyacinth, prosopis cinereriaC. nile perch, Ficus religiosaD. Ficus religiosa, Lantana Camara |
| Answer» Correct Answer - A | |
| 26. |
Field capacity isA. higher for sandy soils than clay soilsB. amount of water in soil available to plantsC. same as permanent wilting pointD. amount of water left in soil after drainage |
| Answer» Correct Answer - D | |
| 27. |
Mangrove of marshy sunderbans is characterised byA. Pneumatophores and viviparity.B. Floating rootsC. OviparityD. all of these |
| Answer» Correct Answer - A | |
| 28. |
Which of the following characters does not characterize a hydrophyte?A. Abundant air space and air chamebrsB. Plentiful xylem and scelerenchymaC. Leaves having stomata only on upper side or noneD. Poor developement of roots |
| Answer» Correct Answer - B | |
| 29. |
A location with luxuriant growth of lichens on the trees indicates that theA. Location is not pollutedB. Trees are very healthyC. Trees are heavily infestedD. Location is highly polluted |
| Answer» Correct Answer - A | |
| 30. |
Ability to produce maximum offspring isA. biotic potentialB. carrying capacityC. environmental resistanceD. none of these |
| Answer» Correct Answer - A | |
| 31. |
Geometric representation of age structure is a characteristic of :A. populationB. landscapeC. J-shapedD. S-shaped |
| Answer» Correct Answer - A | |
| 32. |
Least pore size seen inA. clayey soilB. sandy soilC. loamy soilD. gravelly soil |
| Answer» Correct Answer - A | |
| 33. |
In commensalism:A. both partners are benefittedB. both partners are harmedC. weaker is benefitted while stronger is unharmedD. None of the above |
| Answer» Correct Answer - C | |
| 34. |
Adapative measure to protect against extreme heat by poikilotherms isA. HibernationB. SweatingC. AestivationD. Chilling |
| Answer» Correct Answer - C | |
| 35. |
During extreme aridity, desert rat:A. stores waterB. saves waterC. uses metabolic waterD. does not use water |
| Answer» Correct Answer - C | |
| 36. |
The number of individuals of the population who left the habitat and gone elsewhere during the time period under consideration is known as :A. ImmigrationB. EmigrationC. migrationD. natality |
| Answer» Correct Answer - B | |
| 37. |
Under unfavourable conditions many zooplankton species in lakhs and ponds enterA. DormancyB. HibernationC. DiapauseD. Menopause |
| Answer» Correct Answer - C | |
| 38. |
The J-shaped growth curve lacksA. lag phaseB. exponential phaseC. stationary phaseD. none of these |
| Answer» Correct Answer - C | |
| 39. |
Which one of the following is most appropriately defined?A. Host is an organism which provides food to another organismB. Amensalism is a relationship in which one species is benefited whereas the other is unaffected.C. Predator is an organism that catches and kills other organism for foodD. Parasite is an organism which always lives inside the body of other organism and may kill it |
| Answer» Correct Answer - C | |
| 40. |
The association between ants and members of family rubiaceae isA. ornithophilyB. entomophilyC. myrmecophilyD. epiphyte |
| Answer» Correct Answer - C | |
| 41. |
Animals having a bulb-in thermostat to maintain constnat body temperature are known asA. biothermicB. poikilothermicC. oligothermicD. homeothermic |
| Answer» Correct Answer - D | |
| 42. |
Animals with ant- eating habits are calledA. sanguivorousB. myrmecophagousC. carnivorousD. insectivorous |
| Answer» Correct Answer - B | |
| 43. |
Read the following given examples (i) Plant - pollinator mutualsim (ii) African catfish in our rivers for aquaculture (iii) Fish species with its parasites. (iv). Nile perch and cichlid fish.A. (i),(ii)B. (ii),(iii)C. (ii) , (iv)D. (i) ,(iii) |
| Answer» Correct Answer - D | |
| 44. |
Niche overlap indicatesA. active cooperation between two speciesB. two different parasites on the same hostC. sharing of one or more resources between the two speciesD. mutualism between two species |
| Answer» Correct Answer - C | |
| 45. |
Praying mantis is a good example of :A. camouflageB. mullerian mimicryC. warning colourationD. social insect |
| Answer» Correct Answer - A | |
| 46. |
A protozoan reproduces by binary fission. What will be the number of protozoans in its population after six generations ?A. 128B. 24C. 64D. 32 |
| Answer» Correct Answer - C | |
| 47. |
With reference to community ecology, which one of the following describes a cluster of different species of vines climbing into the canopy of a tropical forest ?A. Ecological eqivalentsB. GuildsC. Edge speciesD. Ecotypes |
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Answer» Correct Answer - B Guild is the group of species belonging to the same trophic level and exploting the same resourece. |
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| 48. |
Which one fo the following population interactions is widely used in medical science for the production of antibiotics?A. AmensalismB. parasitismC. mutualismD. Commensalism |
| Answer» Correct Answer - A | |
| 49. |
Submerged hydrophytes exchange gases throughA. hydrathodesB. stomataC. lenticelsD. general suface |
| Answer» Correct Answer - D | |
| 50. |
In a growing population of a country ,A. pre-reproductive individuals are less then the reproductive individuals.B. reproductive and pre- reproductive individuals are equal in number.C. reproductive individuals are less than the post- reproductive individuals.D. pre-reproductive individuals are more than the reproductive individuals. |
| Answer» Correct Answer - D | |