subject

Population Dynamics

Biology ⇒ Ecology and Environment

Population Dynamics starts at 8 and continues till grade 12. QuestionsToday has an evolving set of questions to continuously challenge students so that their knowledge grows in Population Dynamics. How you perform is determined by your score and the time you take. When you play a quiz, your answers are evaluated in concept instead of actual words and definitions used.
See sample questions for grade 12
A population has a birth rate of 40 per 1000 individuals and a death rate of 10 per 1000 individuals per year. What is the net growth rate per 1000 individuals per year?
A population of 1000 birds has a per capita birth rate of 0.04 and a per capita death rate of 0.02 per year. What is the expected change in population size after one year?
A population of 800 fish has 100 births, 50 deaths, 20 immigrants, and 10 emigrants in a year. What is the population size at the end of the year?
A population of deer in a forest is affected by a severe drought, causing a sharp decline in numbers. Is this an example of a density-dependent or density-independent factor?
A population of rabbits increases from 200 to 300 in one year. What is the growth rate per year?
Describe how limiting factors can regulate population size.
Describe the Allee effect and its impact on small populations.
Describe the difference between r-selected and K-selected species in terms of their reproductive strategies.
Describe the three main types of population dispersion patterns.
Explain how immigration and emigration affect population size.
Explain the concept of 'population bottleneck' and its effect on genetic diversity.
Explain the difference between exponential and logistic population growth models.
Explain what is meant by the term 'age structure' in a population.
If a population has a high proportion of young individuals, what does this indicate about its future growth?
If a population of 500 individuals has 50 births and 20 deaths in a year, what is the population size at the end of the year (assuming no immigration or emigration)?