Q. No.When the feeding efficiency of one species is reduced due to the inhibitory presence of the other species, even if resources are abundant, it is called:
1. Interference competition 2. Exploitative competition 3. Amensalism 4. Predation
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In Connell’s experiment:
| 1. | Balanus excluded Chathamalus from the intertidal area. |
| 2. | Chathamalus excluded Balanus from the intertidal area. |
| 3. | Balanus is smaller than Chathamalus. |
| 4. | Both are equally competitive. |
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In general, competition has the least impact on:
| 1. | Plants | 2. | Herbivores |
| 3. | Carnivores | 4. | Both 1 and 2 |
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 |
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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 |
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 |
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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 |
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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 |
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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 |
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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
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