Download Ecology Unit Review Worksheet

Name: ________________________________________________ Date: _________________ Period: _______ Ecology Unit Review Worksheet‐ Part 1 KEY Directions: Treat this like a quiz and answer as much as you can without ANY help. See how much you actually know by highlighting/starring what you don’t (yes, you have to do this and I will be looking for it). Then, using your notes, go back and answer what you missed. Spend most your time reviewing what is highlighted/starred. 1. Place the levels of ecology organization inside the correct circles using the terms from section 13.1 Popul
Orga
Comm Ecosystem Biome ation nism
unity 2. Fill in the bubbles with the proper words from section 13.2 in the textbook. Ecosystem
includes Biotic Abiotic Such as Such as Plants Animals Sun/Wind
Water/Rain Soil/Rocks
3. Match the biome to its description: a. Arctic Tundra Has a layer of permafrost, and despite little rainfall, is flooded in the summer. b. Tropical Rainforest Warm temperatures and abundant rainfall year round. Lush thick forest contains the greatest amount of biodiversity of all the biomes. c. Taiga Has long cold winters and short warm summers. Coniferous trees are dominant in this biome. d. Grassland Occurs in a variety of climates. The main plant life is grass; few trees and shrubs are present. e. Deciduous Forest Found between polar and tropic regions; the trees here are very seasonal and the soil is very rich in nutrients f. Desert Dry (arid) climate with little precipitation. There are warm/hot days and cooler nights. Biomes Tropical Rainforest Desert Chaparral Deciduous forest Arctic Tundra Grassland Taiga Polar Ice Caps 4. Fill in the chart with a description that describes how water moves through as ecosystem. Process Description Liquid water (H2O) comes down to the Earth as rain, snow, hail, etc Precipitation Evaporation Water (H2O) changes from a liquid to a gas Transpiration Water (H2O) vapor (gas) released (evaporates) from the leaves of plants Water (H2O) vapor (gas) condenses, forming clouds 5. Explain how carbon moves from autotrophs Æ consumers Æ decomposers. What role do fossil fuels play? Condensation CO2 in the atmosphere is taken in by plants to make sugars during photosynthesis, herbivores eat the plants, carnivores eat the herbivores who ate the plants‐ carbon moves up the food chain. When organisms die, decomposers break them down and absorb carbon; not all the carbon is absorbed by decomposers, some is released into the soil and after millions of years it can help to form fossil fuels. When Humans harvest fossil fuels and use them for energy CO2 is rereleased into the atmosphere. Cycle repeats, but too much burning of fossil fuels causes the cycle to be out of balance. 6. Which two major processes are involved in the oxygen cycle? a. Cellular Respiration b. Photosynthesis 7. Explain how phosphorous moves through the following food chain: Grass Æ Rabbit Æ Fox Rocks weather and release phosphorous into the soil; plants absorb phosphate through their roots; rabbits (herbivores) eat the plants and obtain phosphate, foxes (carnivores) eat the rabbits and obtain phosphate. 8. What is nitrogen fixation? Why is it important? Nitrogen fixation is a process where BACTERIA convert gaseous nitrogen (N2) into a usable form of nitrogen for other organisms. 9. In each series, identify which word does NOT belong and explain why? a. Detritivore, Producer, or Decomposer? Explain: PRODUCER does not belong because it is an autotroph, while the other two are heterotrophs that feed on dead organic matter and return nutrients to the soil. b. Omnivore, Autotroph, Herbivore? Explain: AUTOTROPH does not belong because it is a producer, while the other two are types of consumers. c. Trophic level, Energy pyramid, Keystone species? Explain: KEYSTONE SPECIES does not belong because it is an organism that has a great impact on its ecosystem, while trophic levels are levels of nourishment that can be used to show/compare how energy flows within an energy pyramid. 10. CIRCLE the example of HABITAT and UNDERLINE the example of NICHE: In the African savanna, elephants help structure their environment. In their everyday movements, elephants destroy trees, making room for grass and many other plant species to grow.