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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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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Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A): In every species, there are trade- offs between survival and reproductive traits.
Reason (R): Natural selection favors traits that improve an organism’s chances of survival and reproductive success.
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.
Subtopic:  Introduction to Ecology |
 66%

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