- 1(current)
Q. No.For the purpose of ecological studies, the term population is applicable to individuals reproducing:
| 1. | Asexually | 2. | Sexually |
| 3. | Both 1 and 2 | 4. | Neither 1 nor 2 |
Subtopic: Population Attributes |
77%
From NCERT
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Unlike a population, an individual has:
| 1. | Birth and death | 2. | Birth rate |
| 3. | Death rate | 4. | Sex ratio |
Subtopic: Population Attributes |
90%
From NCERT
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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): | Population ecology links ecology to population genetics and evolution. |
| Reason (R): | It is at the population level that natural selection operates to evolve the desired traits. |
| 1. | Both (A) and (R) are True and (R) explains (A). |
| 2. | Both (A) and (R) are True but (R) does not explain (A). |
| 3. | (A) is True but (R) is False. |
| 4. | (A) is False but (R) is True. |
Subtopic: Population Attributes |
75%
From NCERT
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In a pond, there were 20 lotus plants last year. If through reproduction 4 new lotus plants are added, the number of offspring per lotus per year would be:
| 1. | 0.2 | 2. | 0.4 |
| 3. | 2.0 | 4. | 4.0 |
Subtopic: Population Attributes |
83%
From NCERT
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The tiger census in our national parks and tiger reserves is often based on:
| 1. | Pug marks | 2. | Cub count |
| 3. | Area allocation | 4. | Collar position |
Subtopic: Population Attributes |
93%
From NCERT
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In an area, there are 200 carrot grass plants but only a single huge banyan tree with a large canopy.
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
| I. | The ecological role of the banyan tree in this community is negligible when compared to that of carrot grass. |
| II. | In this community, the percent cover or biomass is a more meaningful measure of the population size. |
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Population Attributes |
76%
From NCERT
To view explanation, please take trial in the course.
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Hints
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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 number of fish caught per trap is not a good measure of its total population density in the lake. |
| Reason (R): | For ecological investigations, it is obligatory to count every individual in a population to estimate population density. |
| 1. | Both (A) and (R) are True but (R) does not explain (A). |
| 2. | Both (A) and (R) are False. |
| 3. | Both (A) and (R) are True and (R) explains (A). |
| 4. | (A) is True but (R) is False. |
Subtopic: Population Attributes |
68%
From NCERT
To view explanation, please take trial in the course.
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Hints
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- 1(current)
Q. No.
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