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Q. No.According to the logistics growth model, if a population overshoots its carrying capacity, what is likely to happen?
1. Population crash
2. Rapid exponential growth
3. Beginning of a new lag phase
4. Slower population growth
Subtopic: Population: Logistic Growth Model |
53%
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In a symbiotic relationship between two species, one benefits and the other is unaffected. This type of relationship is described as:
| 1. | Mutualism | 2. | Commensalism |
| 3. | Parasitism | 4. | Competition |
Subtopic: Population Interactions: Commensalism, Protocooperation & Mutualism |
95%
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What ecological principle has been paraphrased in the maxim "complete competitors cannot coexist"?
1. Competitive release
2. Exploitative competition
3. Interference competition
4. Competitive exclusion
1. Competitive release
2. Exploitative competition
3. Interference competition
4. Competitive exclusion
Subtopic: Population Interactions: Competition |
76%
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Consider the two statements:
| I: | In ecology, the term “niche” describes the role an organism plays in a community. |
| II: | A species’ niche encompasses both the physical and environmental conditions it requires and the interactions it has with other species. |
1. I is correct; II is correct
2. I is correct; II is incorrect
3. I is incorrect; II is correct
4. I is incorrect; II is incorrect
Subtopic: Introduction to Ecology | Organisms and its Environment |
88%
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A keystone species in a biological community:
| 1. | is the primary producer. |
| 2. | has no significant impact on the community. |
| 3. | plays a crucial role in maintaining community structure. |
| 4. | is a rare species that must be preserved immediately. |
Subtopic: Introduction to Ecology |
85%
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The process of reciprocal evolutionary change that occurs between species or groups of species as they interact with one another is called as:
1. Character displacement
2. Coevolution
3. Competition
4. Resource partitioning
1. Character displacement
2. Coevolution
3. Competition
4. Resource partitioning
Subtopic: Population Interactions: Commensalism, Protocooperation & Mutualism |
71%
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| Assertion(A): | The logistic growth model is considered a more realistic one for a population growing under natural conditions. |
| Reason (R): | Resources for growth for most animal populations are finite and become limiting sooner or later. |
|
1. |
Both (A) and (R) are True and (R) correctly explains (A). |
|
2. |
Both (A) and (R) are True but (R) does not correctly explain (A). |
|
3. |
(A) is True; (R) is False |
|
4. |
Both (A) and (R) are False |
Subtopic: Population: Logistic Growth Model |
93%
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Where N = Population density at time t, r = Intrinsic rate of natural increase and K = Carrying capacity, what happens when K becomes equal to N?
| 1. | the population grows in an exponential or geometric fashion |
| 2. | the population grows in an arithmetic fashion |
| 3. | the population stops growing in size |
| 4. | the population declines in size |
Subtopic: Population: Logistic Growth Model |
80%
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Amensalism is a biological interaction where:
| 1. | an organism inflicts harm to another organism without any costs or benefits received by itself. |
| 2. | two species interact but do not affect each other. |
| 3. | one organism benefits and the other organism is neither benefited nor harmed. |
| 4. | species derive a mutual benefit. |
Subtopic: Population Interactions: Amensalism |
92%
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Predators:
1. Only I and II are correct
2. Only I and III are correct
3. Only II and III are correct
4. I, II and III are correct
| I: | act as ‘conduits’ for energy transfer across trophic levels |
| II: | keep prey populations under control |
| III: | help in maintaining species diversity in a community |
2. Only I and III are correct
3. Only II and III are correct
4. I, II and III are correct
Subtopic: Population Interactions: Predation |
93%
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