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Study Guide Answers 1. Large invertebrate (organism without a backbone) that can be seen with the unaided eye 2. Just under the surface of the water/stagnant water 3. A riffle is where fast-moving water flows over rocks (usually shallow). A pool is deep, slowmoving water. 4. Microhabitats: Under/on rocks, on leaf packs, on live plants, in riffles, on top of water, swimming throughout water, in sediment 5. CPOM=course particulate organic matter=large/whole leaves, needles and twigs 6. Shredder—EX. Cranefly larva 7. Dragonfly, damselfly, water strider, crayfish, stonefly, beetles, dobsonfly/hellgrammite 8. From oxygen in the air (outside the water) 9. Snorkel—have a tube/appendage that extends out of the water from the body Scuba—take a bubble of air under with them 10. From oxygen dissolved in the water 11. Gills, absorb through the skill directly, from piercing plants 12. Hydropneustic Aeropneustic 13. I would say it is “good” water quality because even though the mayfly and stonefly are group I and the cranefly and blackfly are from lower groups (II and III), the mayfly and stonefly must have good quality. 14. Egg---Larva---Pupa---Adult 15. Egg---Nymph---Adult Case Building Caddisfly Larva Mayfly Nymph Cranefly Adult and Larva Dragonfly Nymph 16.