If in a hypothetical case, you remove a predator from an ecosystem and as a result few prey species get extinct. What does it show

1. Interspecific competition

2. Intraspecific competition

3. Parasitism

4. Commensalism

Subtopic:  Population Interactions: Predation |
 67%
From NCERT
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When the predator keeps on eating the prey, then in the end there should be no more prey to be eaten by the predator. But this situation is not observed in the case of predation in nature. Because

1. Predators are prudent enough

2. Prey has developed a defense mechanism not to allow predators to overexploit them

3. Plants have developed behavioral and chemical defenses.

4. Both 1 and 2

Subtopic:  Population Interactions: Predation |
 75%
From NCERT
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Monarch Butterfly

1. has biochemical defense mechanism
2. acquires biochemical defense mechanism during its caterpillar stage by feeding on poisonous weed
3. is highly distasteful to predator Zebra
4. both 1 and 2

Subtopic:  Population Interactions: Predation |
 90%
From NCERT
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How many insects are phytophagous? And such interaction is called as

1. 30%, parasitism

2. 25% predation

3. 33% commensalism

4. 40% mentalism

Subtopic:  Population Interactions: Predation |
 82%
From NCERT
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Acacia and Cactus show which kind of defenses?

1. Biochemical

2. Biomolecular

3. Morphological

4. Behavioural

Subtopic:  Population Interactions: Predation |
 89%
From NCERT
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Calotropis doesn't allow any cows and goats to browse around by releasing

1. Cardiac glucosamine

2. Cardiac glucoside

3. Cardiac glycoside

4. Cardiac nitroxide

Subtopic:  Population Interactions: Predation |
 85%
From NCERT
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Which of the following is not produced plants as a product of defense mechanism?

1. Nicotine, quinine

2. Caffeine

3. Strychnine

4. Tumrine

Subtopic:  Population Interactions: Predation |
 79%
From NCERT
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Darwin was convinced enough for considering………. A potential force in organic evolution.

1. Interspecific competition

2. Intraspecific competition

3. Mutualism

4. Predation

Subtopic:  Population Interactions: Competition |
 83%
From NCERT
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Competition occurs when closely related species compete for the same resources that are limiting.

In this statement two concepts are emphasized, one is closely related species and the other the resources are limiting.

1. first concept is entirely wrong while the second concept is entirely correct.

2. First concept is right while the second is partially correct

3. Both are not entirely correct

4. Both are entirely correct.

Subtopic:  Population Interactions: Competition |
 56%
From NCERT
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In some shallow South American lakes visiting Flamingoes and Resident Fishes show which kind of interaction?

1. Competition

2. Predation

3. Parasitism

4. Commensalism

Subtopic:  Population Interactions: Competition |
 82%
From NCERT
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