1. Daily TAKS Connection: Food Chains, Food Webs, and Food Pyramids BIO (12): The student knows that interdependence and interactions occur within an ecosystem. The student is expected to: (E) Investigate and explain the interactions in an ecosystem including food chains, food webs, and food pyramids.

2. Foldable Instructions Construct a 3 door foldable “Food Chains, Food Webs, Food Pyramids” Materials: 1 sheet paper Scissors Pen Colored pencils/crayons Food web illustration Glue/tape Instructions: Hotdog fold a sheet of paper Hamburger fold the paper 2 times to evenly divide the paper into thirds Cut along the fold lines from the edge to the valley. Label the bottom of the flaps from left to right “Food Chain”, “Food Web”, and “Food Pyramid”

3. Notes Under the “Food Chain” flap, record the following: route for the transfer of matter and energy through an ecosystem arrows ALWAYS point to the organisms receiving the energy (food). Example: Producer -> primary consumer -> secondary consumer ->tertiary consumer

4. Notes continued…. Under the “Food Web” flap, record the following: shows all possible feeding relationships in a community at each trophic level. a network of interconnected food chains. The arrows ALWAYS point to the organisms receiving the energy (food). Under the “Food Pyramid” flap, record the following: Shows the relationship between food energy available at the trophic levels from bottom to top: producer, primary consumer, secondary consumer, tertiary consumer Less energy available at higher trophic level; most energy at producer level More pollutants at higher trophic levels

5. Question 1 In a typical forest community, plants are producers, rabbits are primary consumers, and wolves are secondary consumers. Which diagram correctly represents these relationships? ac bd

6. Question 2 The difference in the size of each layer of this food pyramid is primarily the result of the difference in — a. food choices of individual niches b. the amount of food energy at each trophic level c. oceanic zones of habitat d. the relative heights of the organisms

7. Question 3 Which of these groups of organisms would most likely have accumulated the largest concentration of a long-lasting chemical pollutant in their bodies? a. Phytoplankton b. Lake trout c. Zooplankton d. Gulls

8. Food Chain & Food Pyramid On the flap labeled “Food Chain”, draw a food chain from the food web provided on the center flap. Be sure the arrows are pointing in the correct direction. On the flap labeled “Food Pyramid”, draw a food pyramid from the food web provided, placing the organisms at the correct trophic level

9. Foldable Activity For the food web provided, name the: 3 herbivores 1 omnivore 10 carnivores Note: omnivores are also herbivores and carnivores

10. Foldable Activity For the food web provided, name the: 3 producers 3 primary consumers 7 secondary consumers 5 tertiary consumers Note: Organisms may appear in more than one trophic level. Which organism(s) is/are also a 4 th level consumer?

11. Question 4 According to this food web, which of these is an omnivore? a. Caterpillar b. Ant c. Deer d. Bird

12. Decomposers mainly bacteria and fungi that break down and obtain energy from dead organic matter essential to the environment recycle nutrients fix unusable nitrogen gas into a usable form which will be picked up by plants Add decomposers to your food web.

13. Question 5 The picture shows a piece of rotting wood. Which of these does the picture demonstrate? a. Photosynthesis occurring b. Decomposers growing c. Wood regenerating d. Genes transforming

14. Abiotic & Biotic Notes Classify the following ecosystems factors as either “Biotic” or “Abiotic” SoilProducersLightPrimary Consumers Secondary consumers AirRainfallWater

15. Question 6 The table lists four groups of factors found in a particular ecosystem. Which group consists of only abiotic factors? a. Group 1 b. Group 2 c. Group 3 d. Group 4