PDF Notes: 01 Populations Theory Booklet

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    What defines a population?

    A group of interbreeding organisms of the same species in a specific habitat.

    What happens if birth rate and immigration exceed death rate and emigration?

    Population size will increase.

    What is the lag phase in population growth?

    Period of slow reproduction and metabolic activity before growth accelerates.

    How does the exponential phase differ from the stationary phase?

    Exponential phase has rapid growth; stationary phase has balanced birth and death rates.

    What is environmental resistance?

    Factors that limit population growth, such as food availability and disease.

    What occurs during the death phase?

    Death rate surpasses birth rate due to resource depletion or toxic buildup.

    What distinguishes density-dependent factors from density-independent factors?

    Density-dependent factors impact larger populations more significantly.

    What is intra-specific competition?

    Competition among individuals of the same species.

    What is the significance of a niche in an ecosystem?

    Only one species can occupy a niche, leading to competitive exclusion.

    What is a transect in ecological sampling?

    A line used to measure species distribution along an environmental gradient.

    What is the purpose of using a quadrat?

    To estimate species density or percentage cover in a defined area.

    What does biogeography study?

    The distribution and abundance of species across different environments.