Understanding Populations and Demography
10 Questions
0 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

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 ______.

<p>range</p> Signup and view all the answers

No population has individuals adapted to live in all different environments of the earth (eg. polar bears dwell in the ______ region.

<p>arctic</p> Signup and view all the answers

Ecologists study populations over time to observe how these populations have changed and predict how they are likely to change in the ______.

<p>future</p> Signup and view all the answers

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 ______.

<p>areas</p> Signup and view all the answers

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 ______.

<p>selection</p> Signup and view all the answers

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 ______.

<p>population</p> Signup and view all the answers

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 ______.

<p>general</p> Signup and view all the answers

More Like This

Population Demography Introduction
10 questions
Introduction to Population Demography
10 questions
Population Studies Quiz
11 questions

Population Studies Quiz

HospitableEllipse avatar
HospitableEllipse
Use Quizgecko on...
Browser
Browser