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Q. No.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
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 |
84%
From NCERT
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When certain exotic species are introduced into a geographical area, they become invasive mainly because:
| 1. | The invaded land has unlimited resources for the introduced species |
| 2. | The invaded land does not have its natural predator |
| 3. | The population of the introduced species in the invaded land is very low |
| 4. | Introduced species do not face any competition in the introduced land |
Subtopic: Population Interactions: Predation |
80%
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 |
86%
From NCERT
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Predators in nature are ‘prudent’ because:
| 1. | This keeps their own population in check |
| 2. | Prudence keeps their hunting skills up to date |
| 3. | Lack of prudence can lead to their own extinction |
| 4. | This helps in the maintenance of genetic diversity in their gene poll |
Subtopic: Population Interactions: Predation |
61%
From NCERT
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Camouflage is:
| 1. | Cryptic coloration | 2. | Aposematic coloration |
| 3. | Incidental coloration | 4. | Dispersive coloration |
Subtopic: Population Interactions: Predation |
78%
From NCERT
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The monarch butterfly acquires distasteful toxin during:
| 1. | Caterpillar stage by feeding on a poisonous weed |
| 2. | Caterpillar stage by feeding on sap of a grass |
| 3. | Adult stage by feeding on nectar of a flowering plant |
| 4. | Adult stage by feeding on latex of deadly night shade plant |
Subtopic: Population Interactions: Predation |
92%
From NCERT
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Subtopic: Population Interactions: Predation |
77%
From NCERT
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The most common means of morphological defense in plants against herbivory are:
| 1. | Spines | 2. | Thick cuticle |
| 3. | Thorns | 4. | Slime |
Subtopic: Population Interactions: Predation |
74%
From NCERT
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As a mechanism of defense against herbivory, Calotropis:
1. Has a large number of thorns
2. Secretes cardiac glycosides
3. Produces a neurotoxin, strychnine
4. Releases a hallucinogen
Subtopic: Population Interactions: Predation |
83%
From NCERT
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