Food Webs Make Up Assignment

Transcription

1 Lesson 8.2 Food Webs Make Up Assignment Name Date Period Key Terms Detritus Producer Consumer Decomposer Food web Carnivore Herbivore Keystone species Trophic level BACKGROUND QUESTIONS: Use your notes, the link to the online text and the links under Lessons 8.1 & 8.2 on the class web site, and/or the Internet to answer the following questions in complete sentences (unless it s fill in the blank!) 1. What is a producer? 2. What is another name for a producer? 3. What is a consumer? 4. What is another name for a consumer? 5. An herbivore eats. 6. A carnivore eats. 7. An omnivore eats. 8. Detritus is. 9. A decomposer. 10. As matter cycles through each stage of a food chain or food web, how does biochemical energy escape? READ ALL DIRECTIONS CAREFULLY!!!! Think about a food chain. While they show one example of how energy may move through organisms in an ecosystem, there are many options other than a single chain! A food web is a model ecologists create to express all possible feeding relationships at each trophic level in a community. Food webs are important because they allow each relationship an organism has in its community to be expressed. A food web, unlike a food chain, is not unidirectional because most organisms depend on more than one other species for food. 1) How is a food web different from a food chain? 2) Why are food webs important?

2 Go to (There is a link to this site on the class web site.) Then, click on the link to Build A Food Web. Answer the first question below and then click Start. 1) Where is the ecosystem that you will explore in today s activity? After you click start, read the directions carefully! Do not click start again until you answer the next 3 questions. 2) What is your job? 3) What can you do at any time to make your food web easier to read? 4) Why will it be important for you to make the food web easier to read? HINT: When you start to build the food web, begin by putting the producer toward the bottom of the box and the top consumer at the top. The other organisms will go anywhere in between. 5) When you get the confirmation, keep the screen open! Do not click to continue until you draw the food web you ve created to the best of your ability. Include a sketch of each organism AND its written name. Be sure your arrows are clear and show the direction of energy as it moves through the ecosystem. 6) Once you have your food web drawn, click to continue. Read the prompt on the page (it is also shown here):! Instead of TYPING your answer, please write it here: BE COMPLETE and discuss the effects on all of the organisms. Use AND underline the following vocabulary words in your discussion of at least 3 sentences: Producer OR autotroph, consumer OR heterotroph, herbivore, carnivore, omnivore, ecosystem

3 Explain KEEP YOUR MEAL INVENTORY IN FRONT OF THIS LESSON IN YOUR BINDER (first turn it in with this Make Up Assignment) List the origin of the foods that you have eaten over the last 3 days in the table below. In other words, where did the food come from? Under the classification column, identify each item as one of the following: a producer/ autotroph, a consumer/ heterotroph, or a decomposer. For your Day 1 foods, include a brief reason (justify why you chose this classification). DAY 1 Food Origin of Food consumed Classification & Reasoning

4 DAY 2 Food Origin of Food consumed Classification DAY 3 Food Origin of Food consumed Classification

5 17. In the space below, sketch and identify the organisms in your diet. Draw arrows between the organisms to represent the feeding relationships. Be sure to draw the arrows in the direction of the flow of energy. Refer to food web picture on page one. 18. Describe any patterns you see. Include in your description what impact you think your feeding patterns have on food webs.