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 11
A population of deer is limited by the amount of food available. Is this an example of a density-dependent or density-independent factor?
A population pyramid with a wide base and narrow top indicates what about the population?
Describe how predation can regulate population size.
Describe one way in which human activities can affect population dynamics.
Describe the difference between density-dependent and density-independent factors affecting population size.
Describe the impact of invasive species on native population dynamics.
In a certain ecosystem, a population of prey and a population of predators interact. If the prey population suddenly decreases due to disease, what is the most likely short-term effect on the predator population?
In a certain island ecosystem, a population of lizards is isolated from the mainland. Over several generations, the population shows reduced genetic diversity and increased susceptibility to disease. Explain the population dynamics processes responsible for these changes.
Which model of population growth produces an S-shaped curve? (1) Exponential (2) Logistic (3) Linear (4) Geometric
Which of the following best defines population density? (1) The number of individuals per unit area (2) The total number of individuals in a population (3) The number of species in a community (4) The rate of population growth
Which of the following best describes r-selected species? (1) Long lifespan (2) High reproductive rate (3) High parental care (4) Stable population size
Which of the following is a biotic factor affecting population dynamics? (1) Temperature (2) Predation (3) Rainfall (4) Soil type
The formula for exponential population growth is __________.
The intrinsic rate of increase (r) is defined as the difference between __________ and __________ rates.
The maximum number of individuals that an environment can support is called the __________.
The pattern of spacing among individuals within the boundaries of the population is called __________.
True or False: Emigration refers to individuals entering a population.
True or False: Exponential growth occurs when resources are unlimited and the population grows at a constant rate.
True or False: Immigration increases the size of a population.
True or False: Population dynamics only studies animal populations.
