Which of the following will breed more than once in their life cycle?

1. Pacific salmon fish

2. Bamboo

3. Cuckoo

4. Both 1 and 3

Subtopic:  Population Interactions: Parasitism |
 64%
From NCERT
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The biological community can have

1. An isolated population of plants which doesn't depend on animals and microbes

2. An isolated population of animals which doesn't depend on plants and microbes

3. An isolated population of microbes which doesn't depend on plants and animals

4. No isolated population is possible there.

Subtopic:  Population Characters: Density |
 79%
From NCERT
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By a particular interaction in a population, one species was benefited while others was not affected at all. Such interaction is called as

1. Commensalism

2. Mutualism

3. Vandalism

4. Competition

Subtopic:  Population Interactions: Commensalism, Protocooperation & Mutualism |
 94%
From NCERT
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By a particular interaction in a population, one species was harmed while other was benefited. Such interaction is called as

1. Competition

2. Predation

3. Parasitism

4. Both 2 and 3

Subtopic:  Population Interactions: Predation | Population Interactions: Parasitism |
 88%
From NCERT
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The interacting species live closely together in which of the following interaction?

1. Parasitism, Predation and Commensalism

2. Commensalism, Amensalism

3. Mutualism and Competition

4. Parasitism, Mutualism, Commensalism

Subtopic:  Population Interactions: Predation | Population Interactions: Parasitism | Population Interactions: Commensalism, Protocooperation & Mutualism |
From NCERT
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Predation can be thought as

1. Prey's way to control its the population

2. Nature's way of transferring energy to higher trophic levels.

3. Nature's way of controlling predators food chain

4. Predator's way of controlling prey's energy level

Subtopic:  Population Interactions: Predation |
 75%
From NCERT
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In a broad ecological context, which of the following can be a predator?

1. Seed eating sparrow

2. Lion

3. Tiger

4. Crow

Subtopic:  Population Interactions: Predation |
 72%
From NCERT
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Predators cannot perform

1. conduit for energy transfer

2. control prey species

3. make the ecosystem stable

4. Keep a check on diversity of species

Subtopic:  Population Interactions: Predation |
 71%
From NCERT
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Why does the exotic species become invasive and start spreading fast?

1. It gets better nutrition there.

2. Because of the lack of competition from other exotic plants

3. Because of the lack of natural predator

4. Because of the successful establishment of the food web.

Subtopic:  Population Interactions: Predation |
 81%
From NCERT
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The prickly pear cactus introduced in Australia in the 1920s got famous because of the lack of which population interaction?

1. Competition

2. Predation

3. Parasitism

4. Amensalism

Subtopic:  Population Interactions: Predation |
 79%
From NCERT
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