Ecology Assessment Class Data

Transcription

1 Answer the following questions on a piece of paper, put your name on it, and turn it in when you are done. DO NOT talk to anyone!!!! (This is not a pop quiz) 1. Write a food chain representing three organisms and label what trophic level each would be in that food chain. 2. What is the difference between a food chain and a food web? 3. Why are plants called producers? 4. The process of water entering the atmosphere from puddles or lakes is called Using the Water Cycle describe how water would go from a river back to a river. Oct 11 12:47 PM Ecology Assessment Class Data Questions All Right 1/2 Wrong All Wrong #1 F.Chain/TropLvls #2 FoodChainvsWeb #3 Plants = Producers #4 Water=Atmosphere #5 River to River *Each question was out of 19 students Questions % of Wrong #1 F.Chain/TropLvls 73.7% #2 FoodChainvsWeb 68.4% #3 Plants = Producers 36.8% #4 Water=Atmosphere 42.1% #5 River to River 57.9% Oct 11 3:44 PM 1

2 Ecosystem Dynamics Basic Concepts and Relationships Feb 8 3:30 PM Energy and Matter An ecosystem is a community of living(biotic) and non-living things(abiotic) working together to support that environment. The two most important functions of the ecosystem are: 1. The capture and use of energy. 2. The cycling of nutrients. These are done by three trophic levels: 1. Producers 2. Consumers - (primary, secondary, etc) 3. Decomposers Oct 12 10:23 AM 2

3 Intro to Ecology.notebook Food Chains Producers get their energy from the sun. Producers build and maintain cells through the glucose they produce in photosynthesis. Consumers build and maintain cells through eating glucose in producers and other consumers. The role of the recycler of chemicals and nutrients in an ecosystem belongs to the decomposer. Oct 12 10:26 AM Food Webs Food Webs show how one organism can be on several trophic levels. Not all animals are only on one trophic level. Energy and nutrients continue to be transferred when organisms eat and this is shown in BOTH Food Chains & Webs. Arrows show which way the energy flows. Oct 12 10:32 AM 3

4 (Energy) Ecological Pyramids Cal Cal Cal Cal An Ecological pyramid can be used to represent the energy at each trophic level. The transfer of energy to each level is NOT very efficient because at each level some energy is used. The loss of available energy up the pyramid is known as the 10% Law. Oct 12 10:35 AM Another Pyramid Another type of pyramid can show the amount of biomass/numbers of organisms at each trophic level. Biomass is the total mass of organic matter at each trophic level. The producer level tends to have the most biomass since it usually has the highest numbers. So when you move up the pyramid the amount of organisms will tend to decrease. Oct 12 11:18 AM 4

5 Intro to Ecology.notebook Exception to the Rule Normally the producers are the largest level in the pyramids. That is not always the case! Depending on the type of ecosystem or food chain, you may have the primary consumers containing the largest number/biomass in the pyramid. (but not the most energy!) Oct 12 11:30 AM Comparing the Pyramids The biomass and energy at a level are directly related to the number of organisms at a level. If one changes than the others will change. Ex. If the grass dies, than so do the birds, which means the biomass, energy, and number of organisms all decrease. IT MAKES SENSE!!!!!! Oct 12 11:27 AM 5

6 Play the Ecology Game... Oct 12 11:36 AM Is it possible that the same water you drank this morning was the same water that got you wet when it rained last month??? Feb 8 4:06 PM 6

7 The Cycle Game 1.Ocean 2.Surface Water(ex.lakes, rivers, ponds) 3.Glacier 4.Groundwater 5.Atmosphere (clouds) 6.Choice Describe below how water gets from to using steps in the Water Cycle. Feb 8 3:22 PM The Water Cycle (Answers) Run Off & Groundwater Precipitation Transpiration Evaporation Condensation Water Vapor 8. Urination, Perspiration, or Cellular Respiration 7) When water goes from a solid right to a gas this is called? (Sublimation) Feb 8 4:21 PM 7

8 The Carbon/Oxygen Cycle Is it possible that the same CO 2 you are exhaling could have been exhaled by a panda in china last year??? Feb 8 4:18 PM The Carbon/Oxygen Cycle (Answers) 1.Photosynthesis 2. Cellular Respiration & Decomposition Fossils Fuels Decomposition Cellular Respiration Photosynthesis Combustion CO 2 Consumption Glucose 5 & 2 Feb 8 4:28 PM 8