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101.

The dominant producers in the neritic zone of the sea are:A. PhytoplanktonB. ZooplanktonC. MicroorganismsD. Diatoms

Answer» Correct Answer - A
102.

In which one of the following habitats does the diurnal temperature of soil surface vary most?A. ForestB. GrasslandC. Shrub landD. Desert

Answer» Correct Answer - D
103.

Hydrilla isA. PhytoplanktonB. Floating hydrophytesC. Submerged hydrophyteD. Amphibian

Answer» Correct Answer - C
104.

A succulent xerophyte isA. CapparisB. CalotropisC. AgaveD. None of the above.

Answer» Correct Answer - C
105.

Identify the correct pair of combinations (i) Vallisneria- Long stalked female flowers-Hydrophily (ii) Tribulus- Annual-Root succulent (iii) Hydrilla-Submerged rooted hydrophyte-Aerenchyma (iv) Casuarina-Perennial-Phylloclades.A. iii,ivB. ii,iiiC. i,ivD. all of the above

Answer» Correct Answer - d
106.

Warning colouration is found inA. ChameleonB. Dart FrogsC. Praying MantisD. Stick Insect.

Answer» Correct Answer - B
107.

Temperature at upper layer of troposphere isA. `-15^(@)C`B. `-25^(@)C`C. `-40^(@)C`D. `-57^(@)C`.

Answer» Correct Answer - D
108.

Lapse rate in troposphere isA. `3.1^(@)C//km`B. `6.5^(@)C//km`C. `9.8^(@)C//km`D. `13.6^(@)C//km`

Answer» Correct Answer - B
109.

Ectomycorrhiza is found inA. Several trees and shrubs of tropical areasB. Many vascular plants of tropical areaC. Several trees and shrubs of temperate area of temperate areasD. Small vascular plants.

Answer» Correct Answer - C
110.

Fungal hyphae remian intercellular inA. EndomycorrhizaB. VAMC. EctomycorrhizaD. Both B and C.

Answer» Correct Answer - C
111.

Ingredients of a atmosphere present in minute quantities but essential for maintaining life on earth areA. Ozone and oxygenB. Ozone and `CO_(2)`C. Carbon dioxide and waterD. Carbon dioxide, ozone and water vapours.

Answer» Correct Answer - D
112.

The most harmful of ultraviolet radiations areA. UV-CB. UV-BC. UV-AD. All the above.

Answer» Correct Answer - A
113.

Which layer of atmosphere is important for telecommunications?A. TroposphereB. OzonosphereC. MesosphereD. Thermosphere.

Answer» Correct Answer - D
114.

Tropopause isA. Lower portion of atmosphereB. Upper part of troposhereC. Middle part of troposphereD. Lower part of troposphere

Answer» Correct Answer - B
115.

Optimum temperature for enzyme functioning in endotherms isA. `25^(@)C`B. `37^(@)C`C. `31^(@)C`D. `45^(@)C`

Answer» Correct Answer - B
116.

The sphere of living matter together with water, air and soil on the surface of Earth is called:A. LithosphereB. HydrosphereC. AtmosphereD. Biosphere/All the above

Answer» Correct Answer - D
117.

Atomspheric layer protective to living beings from harmful rays isA. MesosphereB. OzonosphereC. ThermosphereD. Both B and C.

Answer» Correct Answer - D
118.

Animals which are at metabolic advantage areA. AquaticB. EctothermalC. EndothermalD. Both A and B.

Answer» Correct Answer - C
119.

Active ectotherms control their body temperature byA. Increases or decreased activityB. Constriction of cutaneous blood capilariesC. Dilation of cutaneous blood capillariesD. All the above.

Answer» Correct Answer - A
120.

Animals living in warm tropics areA. EurythermalB. StenothermalC. MegathermalD. Both B and C.

Answer» Correct Answer - D
121.

Low temperature is required by some plants forA. FloweringB. Seed germination and sprouting of budsC. Both A and BD. Appearance of new foliage.

Answer» Correct Answer - C
122.

Low temperature is required in Apple for a duration ofA. 800 hoursB. 400 hrsC. 200 hrsD. 100 hrs.

Answer» Correct Answer - A
123.

Heliophytes differ from sciophytes in havingA. Shorter internodes and thicker leavesB. Longer internodes and thinner leavesC. Shorter internodes and thinner leavesD. Longer internodes and thicker leaves.

Answer» Correct Answer - A
124.

Sun plants haveA. More mechanical tissuesB. Extensice root systemC. Abundant floweringD. All the above.

Answer» Correct Answer - D
125.

Shade plants have lowA. Photosynthetic activityB. Respiratory rateC. Metabolic activityD. All the above.

Answer» Correct Answer - D
126.

Plants growing under shade of other plants areA. EpiphytesB. Semi-epiphytesC. MesophytesD. Sciophytes.

Answer» Correct Answer - D
127.

Physical and chemical conditions of soilo are studied underA. Topographic factorsB. Edaphic factorsC. Biotic factorsD. Climatic factors

Answer» Correct Answer - B
128.

Assertion : Cold blooded animals do not have fat layer. Reason : Cold blooded animals use their fat for metabolic process during hibemationA. Point out if both are true with reasonj being correct not correct explanationB. both are true but reason is not correct explanationC. assertion is true but reason is wrongD. and both, are wrong

Answer» Correct Answer - A
129.

Plants growing under shade of other plants areA. PsammophytesB. SciophytesC. MesophytesD. Xerophytes.

Answer» Correct Answer - B
130.

Halophytes maintain a proper osmotic concentration byA. Excreting saltsB. Mucilage and stored waterC. Proline and sorbitolD. All tha above.

Answer» Correct Answer - D
131.

Individuals of the same species inhabiting a particular locality constitute:A. FloraB. FaunaC. PopulationD. Flora and fauna.

Answer» Correct Answer - C
132.

Which of the following is salt rich habitatA. Saline soilsB. Tidal marshes and mangrovesC. Coastal dunes and saline soilsD. All the above.

Answer» Correct Answer - D
133.

The abundance of a species population within its habitat is called :A. Absolute densityB. Regional densityC. Relative densityD. Niche density

Answer» Correct Answer - D
134.

Habitat together with functions of a species constitute itsA. TopographyB. Trophic levelC. BoundryD. Niche

Answer» Correct Answer - D
135.

Ozone layer exist inA. MesophereB. ThermosphereC. StratosphereD. Tropsophere

Answer» Correct Answer - C
136.

Ozone saves the biosphere by absorbing the high energy radiation called:A. Infra-red raysB. Ultraviolet raysC. X-raysD. Gamma rays

Answer» Correct Answer - B
137.

Ozone layer exist inA. ThermosphereB. StratosphereC. MesosphereD. Lithosphere

Answer» Correct Answer - B
138.

The peak concentration ozone above surface of Earth is at:A. 10 kmB. 15 kmC. 20 kmD. 25 km

Answer» Correct Answer - C
139.

Which of the following is not true for a species ?A. Members of species can interbreedB. Each species is reproductively isolated from every other speciesC. Gene flow does occur between populations of a speciesD. Variations occur among members of species.

Answer» Correct Answer - C
140.

"Good ozone" is found in:A. MesosphereB. IonosphereC. StratosphereD. Troposphere.

Answer» Correct Answer - C
141.

Niche of an organism denotesA. Place of livingB. Specific functions and competitive powerC. Habitat and specific functionsD. Non of the above.

Answer» Correct Answer - C
142.

Assertion : Age sex structure of human population in countries like France and Germany gives a steep pytamid. Reason : In countries like Sudan and India, the population is increasing at a rapid rate.A. Point out if both are true with reasonj being correct not correct explanationB. both are true but reason is not correct explanationC. assertion is true but reason is wrongD. and both, are wrong

Answer» Correct Answer - B
143.

An orchid resembling the female of an insect so as to be able to get pollinated is due to phenomenon ofA. MimicryB. PseudocopulationC. PseudopllinationD. Pseudoparthenocarpy

Answer» Correct Answer - A
144.

Niche representsA. HabitatB. MicrohabitatC. Habitat as well as inter-relationsD. Habitat as well as climate.

Answer» Correct Answer - C
145.

Major ecological community of plants and animals extending over large natural area is known as:A. BioregionB. BiosphereC. BiotaD. Biome

Answer» Correct Answer - D
146.

Ecological amplitude of a species is related toA. Zones of stressB. Zone of optimum tolerance range of a factorC. Area with zones of optimum tolerance ranges of all determining factorsD. None of the above.

Answer» Correct Answer - C
147.

Which on one of the following correctly represents an organism and its ecological niche?A. Vallisneria and pondB. Desert Locust (Schistocerca) and desertC. Vultures and dense forestD. Plant lice (aphids) and leaf.

Answer» Correct Answer - D
148.

The role of an organism in ecological system is known asA. HabitatB. HerbivoryC. NicheD. Interaction.

Answer» Correct Answer - C
149.

The highest level of ecological hierarchy isA. EcosystemB. BiosphereC. BiomeD. Landscape.

Answer» Correct Answer - B
150.

Scientific study of mimicry was benefitted is calledA. DarwinB. BatesC. MullarD. Lamarck.

Answer» Correct Answer - b