IB Biology C4.1 Population and Communities

Front

What is a population?

Back

A group of individuals of the same species living in the same geographical area at the same time and able to interbreed.

Front

What is population size?

Back

The total number of individual organisms of the same species living in an area.

Front

Give an example of a population.

Back

Mountain lions living in the Montezuma area, NM.

Front

What is a challenge with estimating population size?

Back

If a population is very large and spread over vast areas, it becomes difficult to count every individual.

Front

How is population size determined?

Back

Population size is determined through estimates via sampling.

Front

What is an estimate in the context of population size?

Back

An estimate is an approximate size of a population based on sampling.

Front

What is a sample?

Back

A small part of a population studied.

Front

What is sampling?

Back

The method of taking small samples of a population to estimate the true size of a population.

Front

What are the types of population sampling?

Back

Systematic and Random Sampling.

Front

How is the population size of sessile organisms estimated?

Back

Quadrat sampling can be used to estimate the population size of sessile organisms.