Q. No.Consider the given statements regarding competition amongst organisms:
I:
Only related species can compete for the same resource
II:
Competition occurs only when the resources are limiting
The correct statement/s is/are:
1.
I alone
2.
II alone
3.
Both I and II
4.
Neither I nor II
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In some shallow American lakes, unrelated visiting Flamingoes and resident fishes compete for the common food which is:
| 1. | Crustaceans | 2. | Zooplankton |
| 3. | Cichlid fishes | 4. | Prawns |
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A process in which the fitness of one species is significantly lower in the presence of another species, is termed as :
| 1. | Predation | 2. | Parasitism |
| 3. | Competition | 4. | Amensalism |
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Abingdon tortoise in Galapagos islands became extinct within a decade after goats were introduced on the island due to:
1. Habitat fragmentation
2. Better browsing efficiency of goats
3. Predator of goat attacking tortoise
4. Virus of goats parasitizing tortoise
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The ‘Competitive Exclusion Principle’ was given by:
| 1. | Gause | 2. | Connell |
| 3. | Tillman | 4. | Paul Ehrlich |
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A species whose distribution is restricted to a small geographical area because of the presence of a competitively superior species, is found to expand its distributional range dramatically when the competing species is experimentally removed. This is called:
| 1. | Competitive Exclusion | 2. | Competitive Release |
| 3. | Competitive Supremacy | 4. | Competitive Inclusion |
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“Competitive Exclusion Principle” may be true if:
1. The competing species are equally capable
2. Resource partitioning occurs
3. There is only intraspecific competition
4. Resources are limiting
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One mechanism that promotes co-existence rather than exclusion amongst competing species is:
| 1. | Periodic migration | 2. | Hibernation and aestivation |
| 3. | Resource partitioning | 4. | Reproductive isolation |
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Cuckoos laying their eggs in the nests of crow is an example of:
| 1. | Ectoparasitism | 2. | Endopararsitism |
| 3. | Hyperparasitism | 4. | Brood parasitism |
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An orchid growing as an epiphyte on a mango branch is an example of:
| 1. | Ectoparasitism | 2. | Endopararsitism |
| 3. | Commensalism | 4. | Mutualism |
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