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WETLANDS/AQUATIC SYSTEMS PROGRAM Secondary Pre- & Post-Test 1. Seawater salinity is approximately A) 1200 parts per thousand (ppt) B) 35 ppt C) 100 ppt D) 10 ppt 2. Seagrasses provide all of the following except A) Mechanical filtration B) Chemical filtration C) Chemical buffering D) Erosion prevention 3. Which group of plants has to deal with the highest concentration of salt? A) Low marsh plants B) Mid marsh plants C) High marsh plants D) Aquatic plants 4. The strong odor in wetland sediments is caused in part by A) Anoxic chemical processes B) Decaying mater C) Thixotrophy D) Photosynthesis 5. Seagrass growth is limited mostly by substrate and A) Depth B) Water clarity C) Nutrients D) Wave action 6. Where are Benthic organisms found? A) Free floating B) Within aquatic substrates C) Living on aquatic plants D) Attached to other organisms 7. Pneumataphores are specialized structures that allow A) Wetland organisms to reproduce B) Increase diversity among the species C) Aid in support and air exchange in aquatic plants D) Form air bubbles that oxygenate the surrounding water 8. T/F Wetland plants provide the most effective form of erosion prevention. 9. T/F Wetland plants have much in common with desert plants. 10. T/F All wetlands are protected by State and federal laws. FLOATING CLASSROOM PROGRAM Secondary Pre- & Post-Test 1. Match the word on the left with the statement on the right that fits best. _____ Menhaden a. Store fat to help keep them buoyant and insulate _____ Sharks them from the cold _____ Crabs b. Depend on camouflage to ambush their prey _____ Drum c. Protect their developing eggs with their tail _____ Flounders d. Have small numbers of young, called pups _____ Whales e. Represent the largest commercial fish harvest in the US f. Are a group of fish which communicate using sound 2. Water which is green in color usually indicates?(check one) _____ the presence of pollution _____ the presence of millions of fish eggs _____ the presence of marine or aquatic plant life _____ the presence of wastewater from a blue jean factory 3. Which of the following heats up the slowest when absorbing the energy from the sun during the day, and also cools down the slowest at night when the sun goes down? (check one) _____ air _____ asphalt pavement _____ water _____ grass 4. Which of the following terms would be used to describe sea trout? (choose four) _____ carnivore _____ predator _____ canine teeth _____ secondary consumer _____ primary consumer _____ primary producer _____ phytoplankton _____ splits to reproduce 5. An estuary (ES-tue-ary) is NOT:(choose one) _____ a nursery for an incredible number of marine animals _____ a spawning ground for an incredible number of marine animals _____ a place where freshwater and saltwater meet an mix _____ a place where environmental conditions (tides, temperature, salinity, etc.) can change rapidly, frequently and dramatically _____ a place where man-made pollutants can, and often do, collect in the bottom sediments (i.e., clay, sand, etc.) 6. Which of the following animals has adapted (adjusted its lifestyle) to successfully deal with rapid changes in its environment, such as those encountered in an estuary, and is therefore able to spend it's entire life there? (choose one) _____ dolphins _____ sea gulls _____ red drum _____ oysters _____ sanddollars 7. Baby shrimp, fish and crabs are much like small kids in that they need a safe, healthy place to grow up. Such a place also has to have plenty of the right kinds of food. Where do many of these animal species find such a place? (choose one) ____ in the open ocean ____ in the bays ____in the beach surf ____none of these 8. Benthic( bottom dwelling) animals, such as clams and worms, are often used to determine whether or not a bay is becoming polluted. Why do scientists use these kinds of animals rather than fish, crabs, or shrimp as indicators of the "health" of the bay? (check one): _____ they have body fluids that turn purple if harmful pollutants are present _____ they cannot move very far over the period of a month or even a year _____ they store pollutants in their livers better than fish _____ people like to eat many of these bottom dwellers (oysters, clams, etc.) and if lots of people get sick or die scientists tend to search for the cause 9. This coastal canal is used to transport of millions of tons of cargo each year. This cargo is moved aboard barges at a much cheaper cost, when compared with trucks, railcars, or airplanes. Barge transport is also a much safer way to move hazardous (dangerous) materials. This waterway, therefore, is referred to by many as "The Most Important Highway in North America". It is over 1,400 miles long, running from the US/Mexican border all the way to South Florida. You could leave Matagorda, use it to connect to other waterways, and travel to Minnesota or New Jersey without ever getting off the boat. Its name is? (check one) _____ the Gulf Master Shipping Lane _____ the Houston to Galveston Ship Channel _____ the Colorado River Barge Canal _____ the Gulf Intracoastal Waterway _____ the Mississippi River Highway 10. To ensure that an animal species (SPE-cees/ kinds) will not perish or vanish in times of stress (from predation, disease, etc.) most cold-blooded, saltwater animals (such as fish, shellfish, jellyfish, etc.) do what in order to assure that enough young survive to keep the species from becoming extinct? (check one) _____ bury their eggs in mud or gravel _____ move frequently to avoid pollution _____ stay active mostly at night to avoid predators _____ mature at a young age and produce very large numbers of eggs 11. Texas bays are separated from the open sea ( Gulf of Mexico) by? (check one) _____ coral reefs ____ volcanic islands _____ magma flows _____ concrete seawalls _____ barrier islands _____ rock jetties 12. Gulf-caught shrimp are one of the most valuable seafoods harvested in the United States. These good tasting shellfish spawn (release) fertilized eggs which first hatch into tiny crab-looking larvae (LAR-vee, babies). Spawning takes place where? (choose one) ____ in the surf near the beach ____ in the open waters of the Gulf of Mexico ____ in the bays ____ in the upstream waters of rivers and streams 13. Plankton consists mostly of? (choose one) ____ the clusters of barnacles found on floating objects, like logs ____ worms living in the mud in the bottom of bays ____ the tiny plants and animals which drift with the currents ____ insects floating near the surface of the ocean Using a scale of 1 to 5 with 1 being no interest at all and 5 being very interested, how would you rate your interest in science? (circle one) 1 2 3 4 5 Not Interested Somewhat Interested Very Interested *Using a scale of 1 to 5 with 1 being very terrible and 5 being great, how would you rate your experience today? (circle one) 1 2 3 4 5 Terrible So-so Great * Answer question #15 only at the end of the program.