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1.

Temperature changes in the environment affect most of the animals which are:A. aquaticB. desert livingC. poikilothermalD. homoiothermal

Answer» Correct Answer - C
2.

Insectivorous plants grow in soil which is deficient in:A. `N_(2)`B. CaC. MgD. Water

Answer» Correct Answer - A
Insectivorous plants like Nepenthes, Ultricularia, Drosera and Dionea grow in soil deficient in nitrogen. They capture insects to get nitrogen from their protein.
3.

Plants growing in extreme cold soil are:A. OxylophytesB. HalophytesC. PsychrophytesD. Psammophytes

Answer» Correct Answer - C
4.

Plants growing in sandy areas are called:A. HalophytesB. PsammophytesC. OxylophytesD. Eremophytes

Answer» Correct Answer - B
5.

Plants which are attached to the stones and rocks are:A. HalophytesB. AerophytesC. LithophytesD. Psammophytes

Answer» Correct Answer - C
6.

Plants of salty seashore wetlands are called:A. HeliophytesB. HalophytesC. saprotrophsD. Hydrophytes

Answer» Correct Answer - B
7.

All populations in a given physical area are defined as:A. TerritoryB. PopulationC. EcosystemD. Biotic community

Answer» Correct Answer - D
8.

Assertion (A) : Daphnia populations in a water body, at different seasons of an year showed market variations in their body morphology. Reason (R ) : Cyclomorphosis in some planktonic organisms is influenced by the variations in temperatures prevailing in their water bodies at different seasons.A. Both (A) and (R ) are true and (R ) is the correct explanation of (A)B. Both (A) and (R ) are true but (R ) is not the correct explanation of (A)C. (A) is true statement but (R ) is falseD. Both (A) and (R ) are false

Answer» Correct Answer - A
9.

Total surrounding of an organism including other plants and animals and those of its own kind is known as:A. NicheB. BiosphereC. EnvironmentD. All of these

Answer» Correct Answer - C
10.

Which one of the following layers of the atmosphere has maximum density?A. StratosphereB. TroposphereC. MesosphereD. Thermosphere

Answer» Correct Answer - B
11.

Large unit of land having different types of plants and animals is known as:A. ecosystemB. uniform vegetationC. biomeD. niche

Answer» Correct Answer - C
12.

The correct match of atmosphere gases is:A. Nitrogen = `0.03%`, Oxygen = `78.95%`, Argon = `0.03%`, `CO_(2)=20.95%`B. Nitrogen = `78.08%`, Oxygen = `20.08%`, Argon = `0.93%`, `CO_(2)=0.03%`C. Nitrogen = `0.03%`, Oxygen = `78.08%`, Argon = `20.95%`, `CO_(2)=0.93%`D. Nitrogen = `78.08%`, Oxygen = `20.95%`, Argon = `0.93%`, `CO_(2)=0.03%`

Answer» Correct Answer - D
13.

Functional aspect of a species with reference to the plate of its occurrence is called:A. speciesB. ecologyC. environmentD. ecological niche

Answer» Correct Answer - D
14.

Maximum water holding capacity is possessed by which kind of soil?A. SiltB. SandC. ClayD. Gravel

Answer» Correct Answer - C
15.

A large regional unit characterised by vegetation type and associated fauna found in a specific climatic zone is called:A. biomeB. biosphereC. landscapeD. ecosystem

Answer» Correct Answer - A
16.

Atmosphere consists of:A. troposphere + stratosphere + mesosphereB. lithosphere + hydrosphere + ozonosphereC. lithosphere + stratosphere + hydrosphereD. none of the above

Answer» Correct Answer - A
17.

Lime is added to the soil which is too:A. SaltyB. AcidicC. SandyD. Alkaline

Answer» Correct Answer - B
18.

The solid components of Earth comprise:A. HydrosphereB. LithosphereC. AtmosphereD. Ionosphere

Answer» Correct Answer - B
19.

Humus is:A. totally decomposed organic matter in a pondB. totally decomposed organic matter in the soilC. partially decomposed organic matter in the soilD. partially decomposed organic matter in a pond

Answer» Correct Answer - C
20.

Which of the following is not a climatic factor?A. HumidityB. RainfallC. SnowfallD. Substratum

Answer» Correct Answer - D
21.

Biosphere is made up of:A. organismsB. organisms + lithosphereC. organisms + lithosphere + atmosphereD. organisms + lithosphere + atmosphere + hydrosphere

Answer» Correct Answer - D
22.

The term 'niche' of a species refers to:A. specific and habitual functionB. specific function of an organismC. competitive power of an organismD. specific place where an organism lives

Answer» Correct Answer - A
23.

Biosphere isA. life in the outer spaceB. a component in the ecosystemC. composed of the plants present in the soilD. composed of all living organisms present on Earth which interact with the physical environment

Answer» Correct Answer - D
24.

Biosphere is called as:A. part of atmosphere where the living beings can liveB. part of atmosphere where the living beings cannot liveC. both (a) and (b)D. none of the above

Answer» Correct Answer - D
25.

Pedology refers to:A. Study of soilB. Study of populationC. Study of fossilsD. Study of water

Answer» Correct Answer - A
26.

The livable part includes:A. lithosphereB. hydrosphere.C. AtmosphereD. all of these

Answer» Correct Answer - D
27.

Humus is important for plant growth because:A. it is rich in nutrients and increases the water holding capacity of soilB. it is made up of dead organic matterC. it is partially decomposedD. it is derived from leaves

Answer» Correct Answer - A
28.

The term 'biosphere' refers to:A. atmosphereB. stratosphereC. living community with whole ecosystemD. none of the above

Answer» Correct Answer - C
29.

The sphere of living matter together with water, air and soil on the surface of Earth is called:A. biosphereB. LithosphereC. AtmosphereD. Hydrosphere

Answer» Correct Answer - A
30.

Name the famous Indian plant ecologist:A. Birbal SahniB. Ramdeo MisraC. M.S. SwaminathanD. Jagdish Chandra Bose

Answer» Correct Answer - B
31.

Ecology takes into account of:A. effect of plants on environmentsB. environmental factors onlyC. plants adaptations onlyD. all of the above

Answer» Correct Answer - D
32.

Highest order in ecology is:A. biosphereB. CommunityC. populationD. ecosystem

Answer» Correct Answer - A
33.

The study of ecology was started by:A. Charles EltonB. Karl MobiusC. F.E. ClementsD. Johannes Warming

Answer» Correct Answer - D
34.

Ecology deals with the study of:A. insectsB. microorganismsC. economic differences of countriesD. relationship between living and nonliving

Answer» Correct Answer - D
35.

Who gave the terms 'Autecology' and 'Synecology'?A. A.G. TansleyB. Karl MobiusC. Schroter and KirchnerD. Alexander von Humboldt

Answer» Correct Answer - C
36.

Study of interrelationships between a species and its environment is called:A. AutecologyB. SynecologyC. Forest ecologyD. Resource ecology

Answer» Correct Answer - A
37.

Ecology is the study of the relationship of:A. organisms and environmentB. man and environmentC. husband and wifeD. soil and water

Answer» Correct Answer - A
38.

A branch of ecology which is concerned with the study of individual species at all stages of its life cycle in relation to environment is called:A. synecologyB. autecologyC. Ecological nicheD. Reproductive ecology

Answer» Correct Answer - B
39.

Synecology is the study of:A. waterB. individualsC. environmentD. community in relation to environment

Answer» Correct Answer - D
40.

The comprehensive study of an organism and its relation to its environment is called:A. synecologyB. autecologyC. bionomicsD. herpetology

Answer» Correct Answer - C
41.

The study of an entire community in relation to its environment is called:A. AutecologyB. SynecologyC. Resource ecologyD. Space ecology

Answer» Correct Answer - B
42.

Largest terrestrial community of an entire geographical belt over which plant and animal species may be found is called:A. BiomeB. HabitatC. RangeD. Niche

Answer» Correct Answer - A
Biome comprises an extensive ecological community usually with a dominant vegetation.
43.

The study of plant community structure is called:A. EcologyB. PhytosociologyC. AutecologyD. Ecosystems

Answer» Correct Answer - B
44.

Which of the following statements is/are true? 1. A community and its habitat mutually interact. 2. A community and its habitat are interdependent. 3. A community and its habitat exist independently. Answer codes:A. 1 and 2B. 1 aloneC. 1 and 3D. 2 alone

Answer» Correct Answer - A
45.

Which one of the following is one of the characteristics of a biological community?A. NatalityB. MortalityC. Sex-ratioD. Stratification

Answer» Correct Answer - D
46.

The area over which animals move in search of food is called:A. NicheB. HabitatC. TerritoryD. Home range

Answer» Correct Answer - D
47.

Pelagic forms of animals are found:A. on the surface of the sea floating along the wavesB. as parasites of mammalsC. in deep seaD. in the soil

Answer» Correct Answer - A
48.

Organisms capable of swimming and resting on the surface of water are termed:A. NeustonB. NektonC. PlanktonD. Benthos

Answer» Correct Answer - A
49.

Aquatic animals that are able to move at will through the water:A. NektonB. NeustonC. PlanktonD. All of these

Answer» Correct Answer - A
50.

Organisms capable of maintaining constant body temperature are:A. conformersB. stenothermalC. poikilothermalD. homoiothermal

Answer» Correct Answer - D