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
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.
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?
Which model of population growth is represented by 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 a population crash? (1) Gradual decline in population (2) Sudden and dramatic decrease in population size (3) Increase in population size (4) Stable population size
Which of the following best describes a population pyramid with a wide base and narrow top? (1) Declining population (2) Stable population (3) Rapidly growing population (4) Aging population
Fill in the blank: The number of births in a population during a specific period is called __________.
Fill in the blank: The number of individuals that die in a population during a specific period is called __________.
Fill in the blank: The pattern of spacing among individuals within the boundaries of the population is called __________.
Fill in the blank: The study of how and why populations change over time is called __________.
True or False: Exponential growth occurs when resources are unlimited and the population grows at a constant rate.
True or False: In a stable population, the birth rate equals the death rate.
True or False: Population dynamics can be influenced by both abiotic and biotic factors.
True or False: The intrinsic rate of increase (r) is higher in r-selected species than in K-selected species.
