Identify the correct statements:
I. Ramdeo Misra is revered as the Father of Ecology in India.
II. Ecology studies the interactions among organisms and between the organism and its physical [abiotic] environment.
III. The study of Ecology begins at cellular biological organisation level.
IV. Ecology at the organism level is essentially physiological ecology.
 
1. Only I and II 2. All except III
3. Only II, III and III 4. I, II, III and IV
Subtopic:  Introduction to the Chapter |
 55%
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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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Formation of tropical forests needs mean annual temperature and mean annual precipitation as:

1. 18 – 25 °C and 150 – 400 cm

2. 5 – 15 °C and 50 – 100 cm

3. 30 - 50°C and 100 – 150 cm

4. 5 – 15 °C and 100 – 200 cm

Subtopic:  Abiotic Factors: Light & Water (OLD NCERT) |
 78%
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The following diagram shows the biome distribution with respect to annual temperature and precipitation. Grassland, Temperate forest and Coniferous forest are represented, respectively, by:
    

1. A, C and F 2. B, D and E
3. B, E and F 4. A, D and F
Subtopic:  Introduction to the Chapter |
 80%
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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): The physico-chemical [abiotic] components of ecosystem alone characterise the habitat of an organism.
Reason (R): Interactions between organisms are not relevant for the study of ecology.
 In the light of the above statements, choose the most appropriate answer from the options given below :
1. Both (A) and (R) are false.
2. Both (A) and (R) are true but (R) does not explain (A).
3. (A) is true but (R) is false.
4. Both (A) and (R) are true and (R) explains (A).
Subtopic:  Introduction to Ecology | Introduction to the Chapter |
 73%
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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%
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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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The extent of geographical distribution for eurythermals and stenothermals is expected to be:
1. Equal for both
2. Larger for the former
3. Smaller for the former
4. Cannot be predicted

Subtopic:  Abiotic Factors: Temperature (OLD NCERT) |
 69%
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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): Temperature is most important ecologically relevant environmental factor.
Reason (R): Temperature affects the kinetics of the enzymes.
 In the light of the above statements, choose the most appropriate answer from the options given below :
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is not the correct explanation of (A).
3. (A) is true but (R) is false.
4. Both (A) and (R) are false.
  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
Subtopic:  Abiotic Factors: Temperature (OLD NCERT) |
 85%

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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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