Q. No.Identify the incorrectly matched pair:
|
Population interaction |
Species A |
Species B |
|
|
1. |
Mutualism |
+ |
+ |
|
2. |
Predation |
+ |
- |
|
3. |
Parasitism |
- |
- |
|
4. |
Commensalism |
+ |
0 |
Subtopic: Population Interactions: Predation | Population Interactions: Parasitism |
95%
From NCERT
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Predation is an ecological interaction that:
| 1. | Always results in the death of the predator. |
| 2. | Has no impact on the population size of the prey. |
| 3. | Can regulate population sizes and maintain species diversity. |
| 4. | Decreases biodiversity by eliminating weaker species. |
Subtopic: Population Interactions: Predation |
94%
From NCERT
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Consider the given two statements:
| Statement I: | In predation, parasitism and commensalism, the interacting species live closely together. |
| Statement II: | In predation, parasitism and commensalism, one of the interacting species benefits and the other suffers harm. |
| 1. | Statement I is correct; Statement II is correct |
| 2. | Statement I is incorrect; Statement II is correct |
| 3. | Statement I is correct; Statement II is incorrect |
| 4. | Statement I is incorrect; Statement II is incorrect |
Subtopic: Population Interactions: Predation | Population Interactions: Parasitism | Population Interactions: Commensalism, Protocooperation & Mutualism |
77%
From NCERT
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In broad ecological context, all the following would be considered examples of predation except:
1. Tiger eating deer
2. Sparrow eating seed
3. Cow eating herbs
4. Earthworm feeding on detritus
Subtopic: Population Interactions: Predation |
83%
From NCERT
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Predators do not:
| 1. | act as ‘conduits’ for energy transfer across trophic levels |
| 2. | keep prey populations under control |
| 3. | over-exploit their prey |
| 4. | help in maintaining species diversity in a community |
Subtopic: Population Interactions: Predation |
85%
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: | Predators in nature are ‘prudent’. |
| Statement II: | Prey species have evolved various defenses to lessen the impact of predation. |
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 Interactions: Predation |
94%
From NCERT
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How many of the given statements are true?
1. 1
2. 2
3. 3
4. 4
| I: | For plants, herbivores are the predators. |
| II: | Nearly 75 percent of all insects are known to be phytophagous. |
| III: | Thorns in plants are the most common morphological means of defense against herbivory. |
| IV: | Cardiac glycosides produced by certain plants can be very detrimental to the health of herbivores. |
2. 2
3. 3
4. 4
Subtopic: Population Interactions: Predation |
71%
From NCERT
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Consider the given two statements:
| Assertion (A): | Predators help in maintaining species diversity in a community. |
| Reason (R): | Predators reduce the intensity of competition among competing prey species. |
| 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. | (A) is False, (R) is True |
Subtopic: Population Interactions: Predation |
86%
From NCERT
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Consider the two statements:
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: | Cryptically coloured animals are able to avoid being detected easily by the predator. |
| II: | Cryptically coloured animals blend in with their surroundings. |
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Population Interactions: Predation |
94%
From NCERT
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In a field experiment, when all Pisaster starfish were removed from an enclosed intertidal area, the result was:
| 1. | Increase in diversity of invertebrates |
| 2. | Extinction of many invertebrate species |
| 3. | Inability of the Pisaster to enter the area again |
| 4. | Replacement of Pisaster by other starfish |
Subtopic: Population Interactions: Predation |
87%
From NCERT
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