Unit 2.1

Question 1

Population is…

Answer 1

a group of individuals of the same species in the same area at the same time.

Question 1

Understanding the factors that influence the size of populations is…

Answer 1

population ecology.

Question 2

What is the difference between biotic and abiotic?

Answer 2

Biotic refers to living things (such as predators and competitors), while abiotic refers to non-living things (like precipitation, soil nutrients, and temperature).

Question 3

What are the two ways of indirectly counting a population?

Answer 3

Random Sampling and Mark & Recapture

Question 4

Which population counting method takes the average population of random small areas, and applies that average to the total area?

Answer 4

Random Sampling

Question 5

Does the mark & recapture population counting method work best for plants or animals?

Answer 5

Animals - random sampling counts non-moving things (plants)

Question 6

What is the difference between population density and population distribution?

Answer 6

Population density is how many organisms are in a specific area, which population distribution is how those organisms are spread out.

Question 7

Random population distribution occurs due to…

Answer 7

an even amount of resources and windblown seeds.

Question 8

Which type of population distribution occurs due to uneven distribution of resources in an area and social behavior?

Answer 8

clumped

Question 9

Which method of indirect population counting is the following equation used for?

of total organisms / total marked = total # recaptured organisms / # recaptured with marks

Answer 9

Mark & Recapture:
The left side is the entire population while the right side is the recaptured population.