2.1 Study Guide

Question 1

What is the definition of population?

Answer 1

Group of individuals of the same species in the same area at the same time

Question 2

How do you infer the total population from random sampling?

Answer 2

Number of organisms in sample/area of sample=total number of organisms/total area

Question 3

How do you infer the total population from marking and recapturing?

Answer 3

Total number of organisms marked/number of organisms total=total number of recaptured with marks/ number of organisms recaptured

Question 4

What is the difference between density and distribution?

Answer 4

Density is the number of organisms in a certain area and distribution is how the organisms are spread out in that area

Question 5

What are the 3 types of distribution?

Answer 5

Uniform, random, and clumped

Question 6

What are some reasons that populations are in certain distribution types?

Answer 6

Uniform: Territorial, inhibiting growth of other individuals in a certain radius, or scarcity of resources
Random: Seeds distributed by wind
Clumped: Gathered around a certain individual or travel in groups

Question 7

How do you calculate population density?

Answer 7

Population density is calculated by the number of organisms divided by total area