The biome characterized by a mean annual temperature between 5°C and 22°C and mean annual precipitation between 5 cm and 50 cm is:
1. Desert
2. Arctic and alpine tundra
3. Temperate forest
4. Grassland

Subtopic:  Introduction to Ecology |

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Niche of an organism includes:
I: range of conditions that it can tolerate
II: diversity in the resources it utilises
III: its distinct functional role in the ecological system
 
1. Only I 2. Only III
3. Only II and III 4. I, II and III
Subtopic:  Introduction to Ecology | Introduction to the Chapter |
 76%
From NCERT

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The most ecologically relevant environmental factor is:

1. Temperature 2. Water
3. Light 4. Soil

Subtopic:  Abiotic Factors: Temperature (OLD NCERT) |
 86%
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If global warming continues, how would the distributional range of some species be affected?
1. There will be a poleward shift
2. There will be an equatorial shift
3. No change is expected for any species
4. There will be shift from land to marine water

Subtopic:  Response of Organisms to Abiotic Factors (OLD NCERT) |
 62%

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Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A): Organisms living in oceans do not face any water-related problems.
Reason (R): Life on Earth originated in water and is not sustainable without water.
 In the light of the above statements, choose the most appropriate answer from the options given below :
1. Both (A) and (R) are true but (R) does not explain (A).
2. (A) is true but (R) is false.
3. (A) is false but (R) is true.
4. Both (A) and (R) are true and (R) explains (A).
Subtopic:  Abiotic Factors: Light & Water (OLD NCERT) |
 85%
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Many freshwater animals cannot live for long in sea water and vice versa because of:
1. Buoyancy related problems
2. Lack of impermeable skins
3. Thermolabile enzymes
4. Osmotic considerations

Subtopic:  Abiotic Factors: Light & Water (OLD NCERT) |
 91%

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Which of the following algae is likely to be found in the deepest waters?
1.Green
2.Brown
3.Red
4.All are found at equal depths

Subtopic:  Abiotic Factors: Light & Water (OLD NCERT) |
 87%
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Maintenance of a constant internal environment, in spite of an ever-changing external environment, by living organisms is called :
1. Hemostasis 2. Homeostasis
3. Thermoregulation 4. Osmoregulation
Subtopic:  Response of Organisms to Abiotic Factors (OLD NCERT) |
 82%
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Thermoregulation and osmoregulation can be achieved by all:
1. Amniotes
2. Birds and mammals
3. Vertebrates
4. Chordates and insects

Subtopic:  Abiotic Factors: Temperature (OLD NCERT) | Abiotic Factors: Light & Water (OLD NCERT) | Response of Organisms to Abiotic Factors (OLD NCERT) |
 85%
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When exposed to cold temperatures, which of the following is responsible for maintaining constant body temperature in humans?
1. Vasoconstriction and shivering
2. Vasodilation and shivering
3. Vasodilation and sweating
4. Vasoconstriction and sweating

Subtopic:  Abiotic Factors: Temperature (OLD NCERT) | Response of Organisms to Abiotic Factors (OLD NCERT) |
 73%

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