ECOLOGY
ORGANISMS AND POPULATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Growth and immigration rate is equal to death and emigration rate.
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Growth and immigration rate is greater than death and emigration rate.
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Growth and immigration rate is less than death and emigration rate.
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Growth rate is exponential.
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Detailed explanation-1: -Growth and immigration rate is equal to death and emigration rate. Carrying capacity is the maximum population size of a species that can exist in a given environment given the resources.
Detailed explanation-2: -If a population exceeds carrying capacity, the ecosystem may become unsuitable for the species to survive. If the population exceeds the carrying capacity for a long period of time, resources may be completely depleted. Populations may die off if all of the resources are exhausted.
Detailed explanation-3: -So the correct answer is option D. Limiting factors can influence the number of organisms in a population once it reaches its carrying capacity.
Detailed explanation-4: -Overshoot. A population is in overshoot when it exceeds available carrying capacity. A population in overshoot may permanently impair the long-term productive potential of its habitat, reducing future carrying capacity.
Detailed explanation-5: -In logistic growth, a population’s per capita growth rate gets smaller and smaller as population size approaches a maximum imposed by limited resources in the environment, known as the carrying capacity ( K).