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 |
 94%
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 |
 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 coloration2.Aposematic coloration
3.Incidental coloration4.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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About what percent of all insects is phytophagus?

1.1 %2.25 %
3.65 %4.99 %

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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