Download Unit 2- Ecology Retake Review Sheet_1516

Unit 2 - Ecology
Retake Review Sheet
Name ____________________________
Period ____ Date _________________
1. This a model of a ______________________________
2. It is made up of many ___________________________
3. Name the producer(s)? __________________________
4. How many first level consumers are there? __________
Name them: __________________________________
5. What Trophic Level(s) is the Fox from the sun?
6. What % energy would be available if the Fox
ate a Gull _____%. What if it skipped the Gull and
ate the Salmon directly? _____%
7. Create one food chain from this food web:
______________________________________________
Microscopic Plant
8. Who are the herbivores? __________________________
9. What type of organisms are missing from this
diagram (2)? _______________, _________________
10. Losing which organism would be the most
detrimental (look up this word ☺) ___________________
11. El Niño is a weather condition that causes ocean
Microscopic Animal
temperatures to rise, greatly reducing the microscopic
plants and animals. How would an El Niño affect the Fox?
________________________________________________________________________________________________________
12. A bird stalks, kills, and then eats an insect. What are all of the ecological terms that can be used describe the bird?
________________________________________________________________________________________________________
13. What are the ecological terms that can be used to describe a snake that eats a frog that has eaten an insect that fed on a plant?
________________________________________________________________________________________________________
14. 90% of the energy from one trophic level is lost when it is transferred to the next
trophic level. Using this diagram, what mass of eagles could be supported in this
ecosystem? ___________ Explain how you came up with your answer: ____________
______________________________________________________________________
Eagles
1,000 Kg birds
10,000 Kg grasshoppers
100,000 Kg of grass
15. List the levels of organization of the biosphere from individual organism (species) to biosphere.
________________________________________________________________________________________________________
16. Which scientific practice is an ecologist using when he or she enters an area periodically to count the population numbers of a
certain species?
17. What are the 4 factors affecting population growth?
Increase pop. = ___________ & ________________; Decrease pop. = ___________ & _________________
18. Draw and label a Carrying Capacity Graph
- show where birth and death rates are about equal
- logistic growth, exponential growth
- axis where population numbers go
- axis where time goes
19. Why don’t populations continue to grow exponentially? _________________________________________________________
20. Are Abiotic Factors…Density-Dependent or Density-Independent? (circle your answer)
List 4 ___________________, ___________________, ___________________, ___________________
Give a scenario using one of those factors _____________________________________________________________________
_______________________________________________________________________________________________________
21. What is another name for Density-Dependent Factors limiting populations? ____________ Factors
List 4 ___________________, ___________________, ___________________, ___________________
Give a scenario using one of those factors _____________________________________________________________________
____________________________________________________________________________________________
22. There are 2000 snakes on 50 acres of land in Guam. Calculate population density of Brown Tree Snakes per acre
__________________ snakes / acre
23. How does Primary & Secondary Succession differ? ___________________________________________________
24. On the back, draw and label an example of secondary succession
(word bank: bushes/shrubs, climax trees, grasses/weeds, lichens, mosses, pioneer species)