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Q. No.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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In ecological terms, a population should be defined as a group of:
1. Communities in an ecosystem
2. Species in a community
3. Individuals in a family
4. Individuals in a species
1. Communities in an ecosystem
2. Species in a community
3. Individuals in a family
4. Individuals in a species
Subtopic: Introduction to Ecology |
From NCERT
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For the purpose of ecological studies:
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 level of biological organization, where the study is begun, is the organism. |
| II: | a group of individuals resulting from asexual reproduction is also considered a population. |
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Introduction to Ecology | Population Attributes |
75%
From NCERT
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To evolve the desired traits, natural selection operates at the level of:
1. Organism
2. Population
3. Species
4. Biological community
1. Organism
2. Population
3. Species
4. Biological community
Subtopic: Population Attributes |
61%
From NCERT
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Consider the given two statements:
1. Statement I is correct; Statement II is correct
2. Statement I is correct; Statement II is incorrect
3. Statement I is incorrect; Statement II is correct
4. Statement I is incorrect; Statement II is incorrect
| Statement I: | An individual may have births and deaths, but a population has birth rates and death rates. |
| Statement II: | An individual is either a male or a female but a population has a sex ratio. |
2. Statement I is correct; Statement II is incorrect
3. Statement I is incorrect; Statement II is correct
4. Statement I is incorrect; Statement II is incorrect
Subtopic: Population Attributes |
95%
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 |
82%
From NCERT
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If in a pond, there were 20 lotus plants last year and 8 plants died in a year, taking the current population to 12, the death rate of lotus plants in this pond will be:
| 1. | 8 offspring per lotus per year |
| 2. | 12 offspring per lotus per year |
| 3. | 0.8 offspring per lotus per year |
| 4. | 0.4 offspring per lotus per year |
Subtopic: Population Attributes |
87%
From NCERT
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Which of the following will not be an attribute of a population but will be an attribute of an individual?
1. Birth rate
2. Death
3. Death rate
4. Sex ratio
1. Birth rate
2. Death
3. Death rate
4. Sex ratio
Subtopic: Population Attributes |
93%
From NCERT
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An attribute present only in a population and not in an individual will be:
| 1. | Birth | 2. | Death |
| 3. | Sex | 4. | Sex ratio |
Subtopic: Population Dynamic |
93%
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A population with a population pyramid that has an extremely broad base will most likely be:
| 1. | a rapidly expanding population |
| 2. | a stable population |
| 3. | a population where the birth rate equaled the death rate |
| 4. | a population where there were more old than young individuals |
Subtopic: Population Dynamic |
84%
From NCERT
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