Q. No.Monarch butterflies are toxic and unpalatable to predators because they:
1.
incorporate the toxic chemicals from the milkweed they eat
2.
produce their own secondary compounds
3.
break down the toxic chemicals from the milkweed they eat
4.
live with symbionts that secret toxins
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Cryptically colored animals are most likely:
| 1. | Batesian mimics | 2. | is palatable to predators |
| 3. | aquatic | 4. | top predators |
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Number of species in a community is an indicator of its:
| 1. | spatial heterogeneity | 2. | ecosystem productivity |
| 3. | species diversity | 4. | species richness |
Identify the correct statement:
| 1. | Eutrophic lakes contain fewer nutrients than oligotrophic lakes. |
| 2. | Xerarch succession is a primary succession that occurs in water bodies. |
| 3. | Most ecologists believe that most communities achieve stable, unchanging climax vegetation. |
| 4. | A mature ecosystem has greater species richness, greater biomass, and less net productivity than a younger stage of succession. |
The phenomenon of character displacement is seen in:
1. sympatric species
2. allopatric species
3. primary succession
4. secondary succession
A form of mimicry where a harmless species has evolved to imitate the warning signals of a harmful species directed at a predator of them both is called:
1. Mullerian mimicry
2. Batesian mimicry
3. cryptic coloration
4. disruptive coloration
A species that has a disproportionately large effect on its natural environment relative to its abundance is called as:
| 1. | keystone species | 2. | niche |
| 3. | competitor | 4. | predator |
Competitors can coexist indefinitely only by:
| 1. | niche differentiation | 2. | contest competition |
| 3. | interference competition | 4. | scramble competition |
Population size is unlikely to be limited by:
| 1. | predation | 2. | commensalism |
| 3. | competition | 4. | brood parasitism |
Rapid loss of nutrients from terrestrial ecosystems is not caused by:
| 1. | clear-cutting native forest | 2. | early seral stages |
| 3. | climax communities | 4. | low diversity |
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