SmithLifeScience                                             Name __________________ Period _____

SciFoodPyramid2.bmp (80058 bytes) Reading Study Guide Chapter 22 Ecosystems and Biomes
22-1 Energy Flow in Ecosystems (pp.740-745)

1-5. Where Did Your Dinner Come From?
    List what you had for dinner last night.
   Next to each item write the name of the plant or animal that was the source of the food.

    Example:   Macaroni & Cheese
                    Macaroni- wheat
                    Cheese- cow

What I ate...                           Where it came from...

6-15 Section Vocabulary

_____ Producer      A. consumers that eat only plants
_____ Consumer   B. consumers that eat both plants and aniamls
_____ Herbivore   C. carnivore that feeds on the bodies of dead organisms
_____ Carnivore   D. a series of events where one organism eats another and
     obtains energy
_____ Omnivore   E. an organism that makes its own food
_____ Scavenger   F. many overlapping food chains
_____ Decomposer   G. a diagram that shows the amount of energy that moves from one
    feeding level to another in a food web
_____ Food Chain   H. obtains energy by feeding on other
_____ Food Web   I. break down wastes and dead organisms and returns the raw
    materials to the ecosystem
_____ Energy Pyramid   J. consumers that eat only animals



Energy Roles (p.740-741)
                   
16. Name a producer. ____________________________

17. Name a consumer. ____________________________

18. Name an omnivore. ____________________________

19. Name a scavenger. ____________________________

20. Name a decomposer. __________________________

Food Chains and Food Webs (p.742-743)

                           SciFoodWeb.bmp (324954 bytes)

Create 3 food chains from this food web.

21.                         -->                         -->                             -->                              -->

22.                         -->                         -->                             -->                              -->

23.                         -->                         -->                             -->                              -->


 

 

Kangaroo & Dingo Graph
A university student was studying the animals in the Grant Memorial National Park.
Following are the numbers of kangaroos and dingoes that were recorded visiting a watering site in the middle of the park over two years.

Create  a line graph by plotting the animal numbers on the vertical axis against time on the horizontal axis. Plot the kangaroo numbers and the dingo numbers on the same graph but use different colors for each line.

Year 2006 Kangaroo
population
estimate
Dingo
population estimate
Year 2007 Kangaroo
population
estimate
Dingo
population estimate
January 111 16 January 130 16
February 109 18 February 124 19
March 93 21 March 113 23
April 91 17 April 108 24
May 90 16 May 99 20
June 86 14 June 95 19
July 89 12 July 97 15
August 94 9 August 100 14
September 98 11 September 106 11
October 105 13 October 109 13
November 121 15 November 113 14
December 125 16 December 111 18

 

 

 

 

 

 

Energy Pyramids   (p. 744-745)

27. In an energy pyramid the most energy is found at the _________________ level.

28. What percentage of energy is usually transferred to the next higher level? __________

29. How is the percentage of energy that is not transferred to the next higher level used?


30. Are there more organisms at the bottom or the top of an energy pyramid? ____________