10 Questions
Ecologists estimate the size and density of populations using quadrats and the ______ methods.
mark-recapture
Each population has its requirement for temperature, humidity, food types that determine where it can exist and ______ or not.
reproduce
Populations can change in their numbers and structure eg age and sex distribution—for various ______.
reasons
Most species have limited geographic ______.
range
No population has individuals adapted to live in all different environments of the earth (eg. polar bears dwell in the ______ region.
arctic
Ecologists study populations over time to observe how these populations have changed and predict how they are likely to change in the ______.
future
Population ranges are not static but change with time, and populations can expand their range when they circumvent inhospitable habitats in order to colonize new ______.
areas
Larger populations are more stable than smaller populations due to possession of greater genetic variability, hence more capability to adapt to changes in the environment through natural ______.
selection
In terms of density, a member of a low-density population where organisms are sparsely spread out might have more trouble finding a reproductive mate than an individual in a high-density ______.
population
To find the size of a population, ecologists often estimate a population's size by taking one or more samples from the population and use these samples to make suppositions about the population in ______.
general
Explore the concept of populations and how individuals of the same species interact within their environment. Learn about important measures such as population size, density, range, and dispersion. Delve into the statistical study of populations known as demography.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free