In general, competition has the least impact on:

1.Plants2.Herbivores
3.Carnivores4.Both 1 and 2

Subtopic:  Population Interactions: Competition |
 53%
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MacArthur showed that five closely related species of warblers living on the same tree were able to avoid competition and co-exist due to:

1. Behavioral differences in their foraging activities.
2. Pre-zygotic reproductive isolation mechanisms
3. Physiological differences in acclimatization
4. Gene differentiation
Subtopic:  Population Interactions: Competition |
 89%
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Which of the following is not usually an adaptation for a parasitic mode of life?

1. Loss of unnecessary sense organs
2. Presence of adhesive organs or suckers
3. Loss of the digestive system
4. Low reproductive capacity
Subtopic:  Population Interactions: Parasitism |
 86%
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The human liver fluke depends on two intermediate hosts that are:

1. A crustacean and a fish
2. A snail and a fish
3. An echinoderm and a fish
4. Fishes of two different species
Subtopic:  Population Interactions: Parasitism |
 88%
From NCERT
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Flowers and their insect pollinators must undergo co-evolution because:

1. Without pollinators plants may get extinct
2. Plants have to reward the pollinators
3. The relationship must be safeguarded against cheaters
4. Insects are the major pollinators of plants
Subtopic:  Population Interactions: Coevolution |
From NCERT
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The pollinator of the fig plant: 

I:  Uses fruit as an oviposition site
II:  Uses seeds for nourishing its larvae

 

1. I only 2. II only
3. Both I and II 4. None
Subtopic:  Population Interactions: Commensalism, Protocooperation & Mutualism |
 86%
From NCERT
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Autecology is the: 

1.  Relation of heterogeneous populations to their environment
2.  Relation of an individual to its environment
3.  Relation of a community to its environment
4.  Relation of a biome to its environment
Subtopic:  Introduction to Ecology |
 63%
From NCERT
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Ecotone is:

1. A polluted area

2. The bottom of a lake

3. A zone of transition between two communities

4. A zone of developing community

Subtopic:  Introduction to Ecology |
 85%
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Biosphere is:

1.  A component in the ecosystem
2.  Composed of the plants present in the soil
3.  Life in the outer space
4.  Composed of all living organisms present on earth which interact with the physical environment
Subtopic:  Introduction to Ecology | Introduction to the Chapter |
 90%
From NCERT
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The ecological niche is:

1. The surface area of the ocean
2. An ecologically adapted zone
3. The physical position and functional role of a species within the community
4. Formed of all plants and animals living at the bottom of a lake
Subtopic:  Introduction to Ecology | Introduction to the Chapter |
 89%
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