Transcript Trophic
Feb. 17th WARM UP • Write a simplified definition for the following: 1. 2. 3. 4. Food chain Energy pyramid Secondary consumer Trophic ANNOUNCEMENTS: See board Learning Goal • 4 – Explain the relationship between different organisms of an ecosystem and describe the importance of key species • 3 – understand the basics of food webs and food chains • 2 – know what a food chain is • 1 – need to review this concept Food Chain vs Food Web • What is the difference? • What are keystone species? • What kinds of things can influence an ecosystem? 1. Ecosystem a. Ecosystem: b. Biotic: c. Abiotic: • Study Jams Ecosystem Food Chains • What was the food chain for our Hunger Games lab? • What were some biotic & abiotic factors • Food Web • Food Chain & Pyramid 2. Organisms in an Ecosystem a. b. c. d. Animals that only eat plants herbivores Animals that only eat animals carnivores Animals that eat plants & animals omnivores Organisms that breakdown other organisms decomposers • Trophic: • Each level can also be called “trophic” • Means: food or feeding in Greek: Τροφή Food Web Activity • Create a correct food web (at least 7 organisms) for the following biomes with your table – – – – – – – – Rain forest Desert Grassland Deciduous forest (ie: Appalatians) Boreal forest (ie: Canada) Tundra Stream Ocean Energy Pyramids Energy Flow • With a partner discuss: 1. If the food chain had continued to the next level, what percentage of energy would the next level consumer have received from the previous consumer? 2. How much water would you have transferred into the the next level consumer’s cup? 3. Judging from this activity, why do you think most food chains never go higher than 2nd or 3rd level consumers? Fill in the blanks http://schoolworkhelper.net/wp-content/uploads/2011/01/EnergyPyramid-26a65z5.gif Fill in the Blanks C2.5 kcalkcal B 25 kcal kcal 250 kcal A2500kcalkcal http://www.proprofs.com/quiz-school/upload/yuiupload/244802756.jpg Other Types of Pyramids Number Pyramid Biomass Pyramid