- 1(current)
Q. No.The biome characterized by a mean annual temperature between 5C and 22C 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 |
Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
In the light of the above statements, choose the most appropriate answer from the options given below :
| 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. |
| 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 |
74%
From NCERT
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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 |
77%
From NCERT
To unlock all the explanations of this course, you need to be enrolled.
Hints
To unlock all the explanations of this course, you need to be enrolled.
Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
In the light of the above statements, choose the most appropriate answer from the options given below :
| 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. |
| 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. |
- If both the assertion and the reason are true and the reason is a correct explanation of the assertion
- If both the assertion and reason are true but the reason is not a correct explanation of the assertion
- If the assertion is true but the reason is false
- If both the assertion and reason are false
Subtopic: Introduction to Ecology |
63%
- 1(current)
Q. No.
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