Which of the following is a density-dependent factor that may affect population

Question

Which of the following is a density-dependent factor that may affect population growth? volcanic eruption disease fire drought none of the above Spacing within a population for a species that is strongly competitive for resources would be expected to be uniform. clumped. random. uniform or clumped depending if it is a source or sink metapopulation. uniform or clumped depending on the life history strategy of the species. In a deciduous oak forest of the American northeast, one example of an abiotic component of the ecosystem would be nematodes in the soil that feed on plant roots nematodes in the soil that feed on dead organic matter sunlight that filters through the canopy animals such as deer that migrate through the forest but do not eat in the forest the understory plant community

Explanation / Answer

Q 18)Which of the following is a density dependent factor that may affect population growth

2)disease

The density dependent factors are factors whose effects on the size and growth of the population changes with the population density,they are known as density limiting factors such as availability of food,predation,disease and migration.

Q 19)Spacing within a population fo a species that is strongly competitive for resources would be expected to be

1)uniform

In uniform distribution,organisms are spread out in a fairly regular pattern .This usually occurs where there is competition for limiting resources.

Q 20)In a deciduous forest of American northeast,one example of abiotic component of ecosystem would be

3)Sunlight that filters through the canopy

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