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Q. No.The population growing in a habitat with limited resources will show:
A.
Lag phase, followed by phases of acceleration and deceleration and finally an asymptote.
B.
The ability to realise its innate potential to grow in number and reach enormous densities in short time.
C.
Exponential growth
D.
Logistic growth
Choose the correct answer from the options given below:
1. A and B only
2. C and D only
3. A and D only
4. B and C only
Subtopic: Population: Logistic Growth Model |
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Match List-I with List-II:
Choose the correct answer from the options given below:
| List-I | List-II | ||
| A. | Migratory flamingoes and resident fish in South American lakes | I. | Interference competition |
| B. | Abingdon tortoise became extinct after introduction of goats in their habitat | II. | Competitive release |
| C. | Chathamalus expands its distributional range in the absence of Balanus | III. | Resource partitioning |
| D. | Five closely related species of Warblers feeding in different location on the same tree | IV. | Interspecific competition |
| 1. | A-I,B-IV,C-III,D-II | 2. | A-IV,B-I,C-II,D-III |
| 3. | A-III,B-I,C-II,D-IV | 4. | A-II,B-IV,C-III,D-I |
Subtopic: Population Interactions: Competition |
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Level 1: 80%+
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What do 'a' and 'b' represent in the following population growth curve?
| 1. | 'a' represents exponential growth when responses are not limiting the growth; and 'b' represents logistic growth when responses are limiting the growth. |
| 2. | 'a' represents logistic growth when responses are not limiting the growth; 'b' represents exponential growth when responses are limiting the growth. |
| 3. | 'a' represents carrying capacity and 'b' shows logistic growth when responses are limiting the growth. |
| 4. | 'a' represents exponential growth when responses are not limiting the growth and 'b' shows carrying capacity. |
Subtopic: Population: Exponential Growth Model | Population: Logistic Growth Model |
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An example of mutualism between plants and insect pollinators will be:
| 1. | Bees pollinate flowers while obtaining nectar, which is their food source. |
| 2. | Flowers provide shelter to insects, and insects provide nothing in return. |
| 3. | Insects eat parts of the flower, which helps the plant reproduce. |
| 4. | Plants capture and digest insects to obtain nutrients. |
Subtopic: Population Interactions: Commensalism, Protocooperation & Mutualism |
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Matching Type Match the type of interaction with its corresponding example:
1. A-2, B-1, C-3
2. A-1, B-3, C-2
3. A-3, B-1, C-2
4. A-1, B-2, C-3
| Column I | Column II | ||
| A | Commensalism | 1 | Cattle egret riding on cattle |
| B | Mutualism | 2 | Tapeworm in human intestine |
| C | Parasitism | 3 | Lichen (Algae and Fungus) |
1. A-2, B-1, C-3
2. A-1, B-3, C-2
3. A-3, B-1, C-2
4. A-1, B-2, C-3
Subtopic: Population Interactions: Parasitism | Population Interactions: Commensalism, Protocooperation & Mutualism |
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Mutually beneficial associations between certain soil fungi and the roots of most plant species are called
1. mycorrhizae
2. pneumatophores
3. nodules
4. rhizobia
1. mycorrhizae
2. pneumatophores
3. nodules
4. rhizobia
Subtopic: Population Interactions: Commensalism, Protocooperation & Mutualism |
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In an ecological context, competition occurs when:
| 1. | Two species mutually benefit from interacting with each other. |
| 2. | Individuals of different species require the same resources that are in limited supply. |
| 3. | One species benefits at the expense of another species. |
| 4. | Individuals of the same species cooperate to fend off predators. |
Subtopic: Population Interactions: Competition |
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The average per capita birth rate, or __________, increases population size, whereas the average per capita death rate, or ___________, decreases population size.
| 1. | natality; demography |
| 2. | exploitation competition; interference competition |
| 3. | mortality; natality |
| 4. | natality; mortality |
Subtopic: Population Characters: Natality & Mortality |
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A symbiotic association in which organisms are beneficial to one another is known as
1. predation
2. interspecific competition
3. intraspecific competition
4. mutualism
1. predation
2. interspecific competition
3. intraspecific competition
4. mutualism
Subtopic: Population Interactions: Commensalism, Protocooperation & Mutualism |
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“Complete competitors cannot coexist” is a statement of the principle of
1. primary succession
2. limiting resources
3. Müllerian mimicry
4. competitive exclusion
1. primary succession
2. limiting resources
3. Müllerian mimicry
4. competitive exclusion
Subtopic: Population Interactions: Competition |
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