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. |
Which of the following communities is more vulnerable to invasion by outside animals and plants?A. MangrovesB. Tropical evergreen forestsC. Temperate forestsD. Oceanic island communities |
| Answer» Correct Answer - b | |
| 2. |
In water receiving regions, what does forest regulateA. Hydrological cycleB. Carbon cycleC. Nitrogen cycleD. Calcium cycle |
| Answer» Correct Answer - a | |
| 3. |
Taiga refers toA. Temperate deciduous forestqB. Subtropical semi-deciduous forestC. Evergreen forestD. North temperate coniferous forest |
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Answer» Correct Answer - d The taiga or northern temperate coniferous for boreal forests consist of evergreen, cone bearing trees |
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| 4. |
Assertion: Taiga is also called North coniferous forest. Reason: The ground flora is absent in Taiga.A. If both the assertion and the reason one true and the reason is a correct explanation of the assertionB. If both the assertion and reason are true but the reason is not a correct explanation of the assertionC. If the assertion is true but the reason is falseD. If both the assertion and reason are false |
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Answer» Correct Answer - c Taiga biome occurs just South of tundra across North America, Europe and Asia it is also found in the Southern hemispehre (e.g., -parts of New Zealand). Dominant vegatation consists of evergreen conifers which are able to tolerate wide fluctuation of temperature light and soil. They are pine, fir, hemlock, spruce, jumper, yew ,larch deodar. The ground flora consists of herbs. ferms, mosses and lichesns. |
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| 5. |
Assertion: Temperate decidous forest is two-storeyed forest. Reason: Two stories are formed of soft-wood and hard-wood trees.A. If both the assertion and the reason one true and the reason is a correct explanation of the assertionB. If both the assertion and reason are true but the reason is not a correct explanation of the assertionC. If the assertion is true but the reason is falseD. If both the assertion and reason are false |
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Answer» Correct Answer - d Temperate deciduous forest are four-storeyed. The top stratum is occupied by trees reaching a heeight of 30-40m. There is an undertorey of small trees, an intermediate stratum of shrubs and a ground stratum made of herbs, grasses, ferns, mosses and lichens. Vines are found here and there. a few soft-wood trees (conifers) may occur at places interpresed with hard-wood trees. |
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| 6. |
In India coniferous forests are found in:A. Madhya PradeshB. Himalaan regionC. Satpura hillsD. Rajathan |
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Answer» Correct Answer - b Himalayan coniferous forests are altitudeinal forests which occur in the Himalayan of the altitude of 1700-3000m. |
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| 7. |
Which one of the following is commonly found in temperate coniferous forestA. QuercusB. DipterocarpusC. Sharea roubustaD. Pinus wallichiana |
| Answer» Correct Answer - d | |
| 8. |
Sal and teak is the dominant species in which of the following forestsA. Tropical dry decidous forestsB. Temperature deciduous forestC. Temperate rain forestD. None of the above |
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Answer» Correct Answer - a The tropical dry deciduous forest biomes develop in the region where moisture relation are intermediate between desert and savanna. These are found in South-east. Asia, Central and South America, India and Northern Australlia. Teak and sal are major large tree. |
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| 9. |
Match coloumn I (Indian forest types) wth Column II (dominant tree gendra) and choose the correct option. A. A-1,B-2,C-3,D-4B. A-2,B-1,C-4,D-3C. A-3,B-2,C-1,D-4D. A-1,B-2,C-4,D-3 |
| Answer» Correct Answer - a | |
| 10. |
The slow rate of decomposition of fallen logs in nature is due to theirA. Anaerobic environment around themB. Low cellulose contentC. Low moisture contentD. Poor nitrogen content |
| Answer» Correct Answer - c | |
| 11. |
Degradation of proteins play a part inA. Calvin cycleB. Water cycleC. Sulphur cycleD. Nitrogen cycle |
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Answer» Correct Answer - d Plants and animals contain nitrogen in their body protien. After death, the proteins of dead bodies are decomposed into amino acids and ammonia.this ammonia may be converted into nitrates or free nitrogen. |
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| 12. |
Inorganic element that changes food into usable energy isA. SB. PC. CaD. Mg |
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Answer» Correct Answer - b Usable energy is ATP in which phorphorus is present. |
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| 13. |
Phosphorus cycles in the form ofA. `HPO^(3-)`B. `P^(2)` (gas)C. `Po_(4)^(3-)`D. `Al_(2)(PO_(4))_(3)` |
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Answer» Correct Answer - c Phosphorus is obtained from soil as orthophosphate `(PO_(4)^(3-))` organic phosphorus circulates in nature from plants to animals. Phosphate is relased by decomposes (Phosphatising bacteria) back to soil. |
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| 14. |
Which one is not dangerous for life and atmosphereA. BiopollutantsB. Ozone layerC. Nuclear blastD. Deforestation |
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Answer» Correct Answer - b Ozone layer is the ultraviolet rays protector of earth |
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| 15. |
Tropical dense forest is characterized by :A. High temperature and excess rainB. Low temperature and excess rainC. High temperature and lessel rainD. Wild animals (tigers, lions, bears etc.) |
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Answer» Correct Answer - a In the tropical rain forests of south America, Africa and the Indo-Malayn region near the equator, there is plenty rainfall (minimum 190cm/yr) and weather i always warm `(20-25^(@)C)`. |
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| 16. |
Phosphorus cycle isA. Gaseous cycleB. Perfect cycleC. Imperfect cycleD. Partly gaseous and partly sedimentary |
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Answer» Correct Answer - c Because atmosphere or gaseous cycle is absent. |
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| 17. |
Assertion: Savannhs show rich species diversity. Reason: The biome is prone to fires.A. If both the assertion and the reason one true and the reason is a correct explanation of the assertionB. If both the assertion and reason are true but the reason is not a correct explanation of the assertionC. If the assertion is true but the reason is falseD. If the assertion is false but reson is true |
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Answer» Correct Answer - d Tropical savannahs with scattered trees or clumps of trees. The areas of tropical savannah have one or two prolonged dry seassons when fires are an important part of the enviorment. Since both trees and grass must be resistant to drough and fire, the number of species in the vegatation is not large. |
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| 18. |
Phosphorus of ocean becomes available to land plants due toA. Sea birdsB. Deep sea activitesC. Ocean sprayD. All of these |
| Answer» Correct Answer - a | |
| 19. |
What are biogeochemical cycles?A. Two typesB. Three typesC. Four typesD. Five types |
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Answer» Correct Answer - a The biogeochemical cycles are classfied into 2 types namely gaseous cycles and seimentary cycles. |
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| 20. |
Alpine forest occur at altitudeA. 3900-6000mB. 1900-3000mC. 1000-1500mD. 500-1000m |
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Answer» Correct Answer - a Alpine is a freeless area on high mountains (above 3500m) which has snow for long months. |
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| 21. |
Alpine plants showA. MesophytismB. HalophytismC. XerophytismD. Luxuriant growth |
| Answer» Correct Answer - c | |
| 22. |
Relative to roots, the shoots are massive in plants ofA. DesertsB. Moist temperateC. TundraD. Moist tropical forests |
| Answer» Correct Answer - d | |
| 23. |
Plants such as Prosopis, Acacia and Capparis represent examples of tropicalA. GrasslandB. Thorny desertsC. Deciduous forestD. Evergreen forests |
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Answer» Correct Answer - b Flora of throm forests include Prosopis cineraria, Acacia senagal, Capparis decidua,Salvadora oleoidses. Asparagus racempsus, Ephedra fallata. |
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| 24. |
In the phosphorus cycle, weathering makes phosphate available first to:A. ConsumentB. ProducersC. DecomposersD. None of these |
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Answer» Correct Answer - b In the phosphorus cycle weathring makes phosphate available to the soil from where plants or producers get then first. |
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| 25. |
Crystalline rocks are natural source of biogenetic elementA. CalciumB. PhosphorusC. MagnesiumD. Sodium |
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Answer» Correct Answer - b The main source of phosphorus is rocks. Through erosion and weathering phosphorus is made available in the soil. |
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| 26. |
Maximum `O_(2)` evolution occurs fromA. PhytoplanktonB. GrasslandsC. Herbs and shurbsD. Dense forest |
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Answer» Correct Answer - a Major,source of `O_(2)` liberation is photosynthesis and about 90% of toal photosynthesis is done by phytoplankton. |
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| 27. |
Study the cycle shown below and select the option which gives correct words for all the four blanks, A,B,C and D. A. `{:(A,B,C,D),("Nitrification","Ammonification","Animals","Plasts"):}`B. `{:(A,B,C,D),("Dentrification","Ammonification","Plants","Animals"):}`C. `{:(A,B,C,D),("Nitrification","Dentritification","Animals","Plants"):}`D. `{:(A,B,C,D),("Dentrification","Nitrification","Plants","Animals"):}` |
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Answer» Correct Answer - b A. Dentrification, B-Ammonification, C-plants, D-Animals |
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| 28. |
In Nitrogen cycle, which of the following plays and important roleA. RhizopusB. NitrobacterC. MucorD. All green algae |
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Answer» Correct Answer - b Nitrobacter is a `N_(2)` organism, it fixes atmospheric free `n_(2)` into soluble salts like nitries and nitrates. The fixed `N_(2)` is absorbed by plants when herbivores feed on these plants, the `N_(2)` flows on the carnivores through food chain hence it is importnat for the `N_(2)` cycle. |
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| 29. |
Amount of nitrogen fixed celectrochemically and photochemically isA. `140mg//m^(2)//yr`B. `78mg//m^(2)//yr`C. `35mg//m^(2)//yr`D. `15mg//m^(2)//yr` |
| Answer» Correct Answer - c | |
| 30. |
The sphere of living matter together with water, air and soil on the surface of Earth is called:A. LithosphereB. BiosphereC. HydrosphereD. Atmosphere |
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Answer» Correct Answer - b Because abiotic (non-living) and biotic (living) components together constitute the biosphere and abiotic component is composed of the air(atmospehre). |
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| 31. |
About `71%` of total global carbon is found isA. OceansB. ForestsC. GrasslandsD. Agroecoystems |
| Answer» Correct Answer - a | |
| 32. |
The limiting factor in nitrification of soil isA. pHB. Temperature deciduous forestC. LightD. Air |
| Answer» Correct Answer - a | |
| 33. |
In which of the following both pairs have correct combination?A. `{:("Gaseous nutrient cycle Sedimentary nutrient cycle","carbon and sulphur Nitrogen and phosphorus"):}`B. `{:("Gaseous nutrient cycle Sedimentary nutrient cycle","Nitrogen and sulphur Carbon and phosphorus"):}`C. `{:("Gaseous nutrient cycle Sedimentary nutrient cycle","Sulphur and phosphorus Carbon and nitrogen"):}`D. `{:("Gaseous nutrient cycle Sedimentary nutrient cycle","Carbon and nitrogen sulphur and phosphorus"):}` |
| Answer» Correct Answer - d | |
| 34. |
Biochemical cycle with gaseous phase isA. CarbonB. SodiumC. PhosphorusD. Magnesium. |
| Answer» Correct Answer - a | |
| 35. |
One way cycle isA. `CO_(2)` cycleB. `H_(2)O` cycleC. Free energy cycleD. `O_(2)` cycle |
| Answer» Correct Answer - c | |
| 36. |
Deciduous forests have:A. Variety of grassesB. Broad-leaved treesC. Narrow-leaved treesD. Variety of c rocodiles |
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Answer» Correct Answer - b Its dominant climax vegatation consists of braod-leaved hardwood (dicot) tree like Oak,Elm,Maple,Birch, etc. |
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| 37. |
Nitrogen is a critical element of the ecosystem because it isA. Essential elementB. Abundent in atmosphereC. LabileD. Fixed by microbes |
| Answer» Correct Answer - c | |
| 38. |
The activity moving organism in equatic ecosystem isA. PhytoplanktonB. ZooplanktonC. NektonD. Benthos |
| Answer» Correct Answer - c | |
| 39. |
Stratifications is more common inA. Tropical rain forestB. Deciduous forestC. Temperate forestD. Tropical savannah |
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Answer» Correct Answer - a Vegetation of tropical rain forests show stratification. Strafication is the grouping of plants in a forest into two or more well defined layers depending upon their height like tall trees, medium sized trees, small trees, bushes, herbs, etc. |
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| 40. |
Choose the wrong pairA. Salvodora-DesertB. Ables-Coniferous forestC. Quercus-Broad leaf forestD. |
| Answer» Correct Answer - e | |
| 41. |
The organisms which live in the bottom of lake are called:A. PhytoplanktonsB. ZooplanktonsC. Nektons and planktons bothD. Benthos |
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Answer» Correct Answer - d Benthonic organisms are found along the floor of the sea bed, bottom of a lake and include creeping, crawing or sessile organisms. The benthonic region has scavengers and decomposers. |
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| 42. |
Which one has the maximum biomass Or Which part of the world has a high diversity of organisms Or Which one of the following ecosystem types has the highest annual net preimary productivity. Or Presence of plants arranged into well defined vertical layers depending on their height can be seen best inA. Temperate forestB. Tropical rain forestC. Alpine vegetationD. Taiga |
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Answer» Correct Answer - b Tropical rain forest are found on those are as wehre favourable conditions like optimum light intensity, Rainfall etc. Productivity of the tropical rain forest is very high 12000 kcal/`m^(2)`/yr. as compared to 3000 `"kcal"//m^(2)//"yr"` for temperate deciduous , 2000 kcal for taiga and only 200 `"kcal"//m^(2)//"yr"` for tundra. Tropical rain forest shown maximum biodiveristy on land and it is forest shown maximum boidiversityon land and it is estimated that one half to two-thirds of all species of terrested that one half of two-thirds of all species of terrestrial plants and insects live in tropical forests. |
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| 43. |
In desert grasslands, which type of animals are relatively more abundantA. DiurnalB. ArborealC. AquaticD. Fossorial |
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Answer» Correct Answer - d Fossorial animals are abundant in desert grassland which are adapted to live underground inside burrows (in low temperature). |
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| 44. |
The grasslands in Asia are known as:A. SavannahB. PampasC. SteppesD. Veldt |
| Answer» Correct Answer - c | |
| 45. |
Assertion: Excess of sulphur reaches to reservoir pool. Reason: Thiobacillus and Desulpho vibrio convert elemental sulphur into the sulphate.A. If both the assertion and the reason one true and the reason is a correct explanation of the assertionB. If both the assertion and reason are true but the reason is not a correct explanation of the assertionC. If the assertion is true but the reason is falseD. If both the assertion and reason are false |
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Answer» Correct Answer - c Some bacteria and fungi can chagne `H_(2)S` and elemental sulphur to sulphate state (e.g., beggiotoa,Thiobacillus, penicilium, Nevrospora). Reverse can also occur (e.g., Aerobacter, Desulpho vibrio) Leaching Delsulpho vibiro bacteria are ecologicaly importnat, becaue they give `SO_(4)` in deep segments and in anoxic waters, such as the Black Sea to `H_(2)S` gas and precipitation of sulphur take out some sulphur from circulating pool and convert into part of reservoir pool. |
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| 46. |
Given below is a simplified model of phosphorus cycling in a terrestrial ecosystem with four blanks (A-D). Identify the blanks. A. `{:(A,B,C,D),("Deltritus","Rock minerals","Producer","Litter fall"):}`B. `{:(A,B,C,D),("Producers","Litter fall","Rock minerals","Detritus"):}`C. `{:(A,B,C,D),("Rock minerals","Detritus","Litter fall","Produc ers"):}`D. `{:(A,B,C,D),("Litter fall","Producers","Rock minerals","Detritus"):}` |
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Answer» Correct Answer - a A-Detritus B-Rock Minerals (C)-Producer D-Litter fall. |
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| 47. |
In India tropical wet evergreen rain forests are not found inA. Tamil naduB. AndamnaC. West bengalD. Madhya Pradesh |
| Answer» Correct Answer - d | |
| 48. |
In which one of the following habitats does the diurnal temperature of soil surface vary most?A. DesertB. GrasslandC. Shrub landD. Forest |
| Answer» Correct Answer - a | |
| 49. |
Which of the following is present in maximum amont in atmosphereA. OxygenB. NitrogenC. Carbon dioxideD. Hydrogen |
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Answer» Correct Answer - b 78.03% of the atmosphere consists of nitrogen. Some is being added to it through volcanic eruptions, erosion of sedimentary rocks and denitrification. |
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| 50. |
The phosphorus rich fertilizer obtained from sea birds along the coast of Chile and Peru, isA. GuanoB. Bone mealC. DungD. Urea |
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Answer» Correct Answer - a The excess of phosphate in the bodies of animals is excreted out through faces. The bird guano (excreta) contains a large amount of phosphate. |
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