Intro to Population

Question 1

What is population?

Answer 1

All of the organisms in the same place at the same time that can reproduce together

Question 2

What is clumped distribution and why might a population be in it?

Answer 2

One specific area that has a lot of different groups

Question 3

What is population density?

Answer 3

The number of individuals/area

Question 4

What is the difference between density and distribution?

Answer 4

Density measures the amount of organisms in an area while distribution is where those organisms go in an area

Question 5

What is uniform distribution and why might a population be in it?

Answer 5

All organisms are evenly distributed and this could be in a population if resources are scarce so that the resource is used between all of them

Question 6

What is population distribution?

Answer 6

The pattern in which organisms of a population are spread throughout the range

Question 7

What is the difference between the three types of distribution?

Answer 7

The difference is how they are grouped of where the organisms are

Question 8

What is random distribution and why might a population be in it?

Answer 8

Organisms that are in several different areas in a space with different amounts. This would be in a population if there are specific areas that have the resources

Question 9

One night, you trap 40 mice, mark them, and let them go. Two nights later, you again trap 40 mice, and 16 of them are marked. What is the total number of mice in the meadow?

Answer 9

100

Question 10

What is the set up to find random sampling?

Answer 10

Of organisms in sample/area of sample = # total organisms/total area

Question 11

What would be some problems with using random sampling?

Answer 11

1. There could be an uneven amount of organisms in different places of a location

2.How you would randomize positions of the quadrants

3. How many samples you need to take

Question 12

What is the set up for mark and recapture?

Answer 12

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

Question 13

Which type of distribution is best for random sampling?

Answer 13

Uniform

Question 14

Why is uniform distribution the best type to use when doing random sampling?

Answer 14

There is the same number of organisms in whatever area you choose to take data from

Question 15

What type of distribution is this?:
A certain fish species tends to gather in large groups to avoid being singled out and eaten by predators

Answer 15

Clumped

Question 16

What are some examples of uniform distribution?

Answer 16

Plants inhabiting growth by other individuals or redwood trees growing in uniform nature

Question 17

What type of distribution is this?:
The seeds of a plant species are distributed by wind in a field where conditions are uniform

Answer 17

Random

Question 18

What is an example of random distribution?

Answer 18

Wind-dispersed plants falling in a favorable environment like dandelions

Question 19

What are some examples of clumped distribution?

Answer 19

School of fish or Pack of Wolves

Question 20

What would the density be for an area the is 2km squared and has 16 individuals in it

Answer 20

8 individuals/unit area