Name___________________________
1st
Six weeks Checkpoint Review
8.11A Ecosystem Interactions
Use the food web to answer the following
questions.
1. Define parasitism:
______________________________________________________________________________________
Identify the Parasite in the web ______________________ : a Host __________________________
2. Identify the producer. ______________________________
3. Identify each as predator or prey.
Blue Jay _________________
Caterpillar__________________
Deer Mouse _________________
Beetle____________________
4. Define consumer._______________________________________________________________
5. Identify the consumers in the web. _________________________________________________
________________________________________________________________________________
6. How many secondary consumers are found in the web? ______________________________
7. Which organisms in the web receive the most energy from the producer?
________________________________________________________________________________
8. Identify the organisms in competition for Deer Mice.______________________________________
Use the food web to answer the following questions.
9. Which organisms would decrease in
population with the removal of the rabbit?
____________________________________
10. Which two organisms are in competition for
the same food source?__________________
Name___________________________
11. Which of the following organisms in the food web above will most likely be adversely affected if
toxins are released into the environment?
__________________________________________________________________________________
__________________________________________________________________________________
8.11B Organism Competition
12. List 3 resources that an animal may compete for: ______________________________________
13. List 3 abiotic factors a plant may compete for:
_______________________________________
14. Define carrying capacity. __________________________________________________________
__________________________________________________________________________________
15. Define limiting factors.____________________________________________________________
__________________________________________________________________________________
16. When an area reaches its carrying capacity, how do limiting factors affect the population of a
species? __________________________________________________________________________
Changes in a deer population are shown in the graph below
17. Explain why the deer population is
changing at location X.
_________________________________
_________________________________
_________________________________
_________________________________
_________________________________
_________________________________
_____________
Complete the following by filling in the blanks with increase or decrease.
17. If wildflower population increases
population will _______________.
18.
butterfly population will_______________
lizard
Name___________________________
19. Give one hypothesis to explain why the deer population exceeded its carrying capacity in 1992.
___________________________________________________________________________________
20. Why did the population decrease in 1994 after it exceeded the carrying capacity? ________________
___________________________________________________________________________________
8.11C Natural Selection
21. Define natural selection. __________________________________________________________
_________________________________________________________________________________
22. How did the Peppered Moth found in the forests of Manchester, England during the industrial
revolution demonstrate the process of natural selection? _________________________________
___________________________________________________________________________________
23. If an animal is adapted to an environment that is warm and dry, and a gradual climate change caused
the temperature to get colder in that area, what adaptations would the population of animals need to
have in order to survive the colder climate?
__________________________________________________________________________________
24. If a food source in an area becomes scarce, name 2 short term behavioral changes an animal may
make in order to survive.
_______________________________________________________________________________
25. If resources become scarce for a plant, name 2 ways that the plant can adapt to these changes
(consider plant structures used for photosynthesis).
__________________________________________________________________________________
_________________________________________________________________________________
Name___________________________
8.11D Human Impact on Oceans
23. List 3 resources humans depend on that come from the ocean. Circle the one you think we depend
on the most. ______________________________________________________________________
_________________________________________________________________________________
24. List 3 ways humans negatively impact the ocean and organisms that live there. ______________
_________________________________________________________________________________
_________________________________________________________________________________
25. List 3 ways humans can help positively impact the ocean and organisms that live there.
_________________________________________________________________________________
26. How does over-fishing affect the marine ecosystem? __________________________________
_________________________________________________________________________________