3. Investigating Populations

Question 1

what is used to investigate non-motile organisms?

Answer 1

quadrats and transects

Question 2

define non-motile organims

Answer 2

organisms that do not move i.e. plants

Question 3

what do quadrats and transects measure?

Answer 3

the abundance of a species and species frequency

Question 4

define species frequency

Answer 4

how often a species is found

Question 5

what method is used to investigate motile organisms

Answer 5

Mark-Release-Recapture Method

Question 6

what are the ethical guidelines when completing Mark Release Recapture method

Answer 6

• capture organisms in an appropriate method
• mark them in a harmless way

Question 7

what are motile organisms

Answer 7

organisms that can move i.e. insects

Question 8

what are the assumptions you make when conducting a Mark-Release-Recapture experiment?

Answer 8

• that there are no population changes with the births and deaths
• that between the releasing and recapturing the organism gets to its habitat
• that the mark will not affect their chance of survival

Question 9

whats the equation for total population size?

Answer 9

marked organisms in second sample

Question 10

what is a transect?

Answer 10

a line travelling across an area youre investigating different species distributions