Name: ____________________________
Studying Populations
Date: _______ Class: ______ Seat #_____
1. What is one way to refer to the number of individuals in a specific area? ______________________________
2. How is population density calculated? __________________________________________________________
__________________________________________________________________________________________
3. Name 4 methods for determining the population density of an area.
1. ______________________________
3.________________________________
2., ______________________________
4.________________________________
4. Which method mentioned in question 3 involves making an estimate of a population by counting the number of
organisms in a small area (a sample), and then multiplying to find the number in a larger area?
_________________________________________
5. If a scientist traps and writes numbers on turtles’ shells, and then repeats it after a certain time, this method is called
_______________________________ that helps determine the size of a population.
6. When a scientist counts tracks, nests, or other signs of a population instead of the organisms themselves this is called
__________________________________.
7. If a scientist counts each organism one by one, this is called ___________________________________________.
8. Describe how a population can increase in terms of birth rate and death rate .___________________________
___________________________________________________________________________________________.
9. Compare immigration and emigration and tell how each changes the population. .___________________________
_____________________________________________________________________________________________.
_____________________________________________________________________________________________.
10. What is a limiting factor? ______________________________________________________________________
11. Give an example of a density-dependent limiting factor. ______________________________________________
12. Density dependent limiting factors affect __________________ populations.
13. Density independent factors are mostly ______________________.
14. Give 3 examples of density independent limiting factors. _____________________, _________________________,
and _______________________
15, True or False? Density independent limiting factors only affect small populations.
16. What is carrying capacity? __________________________________________________________________
17. What are some factors that determine carrying capacity? Name several. ___________________________________
________________________________________________________________________________________________