Name: ________________________________________________ Date: _________________ Period: _______
Ecology Unit Review Worksheet | KEY Directions: Treat this like a test 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). 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 Soil/Rocks Animals/ Sun/Wind/ Water/Rain/ Bacteria/Fungi/ Temp Clouds
Protista
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 Precipitation
Description Liquid water (H2O) comes down to the Earth as rain, snow, hail, etc Water (H2O) changes from a liquid to a gas
Evaporation
Water (H2O) vapor (gas) released (evaporates) from the leaves of plants
Transpiration Condensation
Water (H2O) vapor (gas) condenses, forming clouds
5. Explain how carbon moves from autotrophs consumers decomposers fossil fuels CO2 (carbon dioxide) in the atmosphere is taken in by plants to make sugars during photosynthesis, herbivores/omnivores eat the plants’ stored sugars (C6H12O6), carnivores eat the herbivores/omnivores who ate the plants, when consumers die decomposers break them down and absorb their body’s stored carbon (remember the 4 types of organic molecules); 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. 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 Rabbit 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 by which 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/heterotrophs. 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.
