Population Dynamics
Biology ⇒ Ecology and Environment
Population Dynamics starts at 8 and continues till grade 12.
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See sample questions for grade 8
A population of 1,000 birds has 100 births and 50 deaths in a year. What is the net change in population size?
A population of 200 deer lives in a forest of 10 square kilometers. What is the population density?
A population of fish in a lake decreases from 500 to 400 in a year. What is the change in population size?
A population of insects increases by 20% each year. If there are 500 insects now, how many will there be next year?
A population of rabbits increases from 100 to 150 in one year. What is the population growth?
A scientist observes that after a drought, the population of frogs in a pond decreases sharply. What type of limiting factor is the drought?
Describe one way humans can affect population dynamics in an ecosystem.
Describe what a population crash is and give one possible cause.
Describe what happens to a population when it exceeds its carrying capacity.
Describe what is meant by 'age structure' in a population.
Explain the difference between density-dependent and density-independent limiting factors.
Explain the difference between emigration and immigration in population dynamics.
Explain what a limiting factor is and give one example.
Explain why populations cannot grow indefinitely.
If a population has a high birth rate and a low death rate, what will likely happen to its size?
What is population density?
What is the term for the pattern of spacing among individuals within a population?
