5.0 Aquatic & Mosquito exam 2023 with correct answers

List the roles plants play in a healthy aquatic ecosystem. correct answers-producing oxygen -preventing shoreline erosion -lessening excess nutrients during growing season -stabilizing lake bottom -providing food and habitat for fish, waterfowl, and other aquatic animals List ways that excessive plant growth can adversely affect the ecology and uses of a water body. correct answers-harm ecology of aquatic ecosystem -curtail or prevent recreational water uses (e.g. fishing, boating, swimming) -impart tastes or odors to drinking water -hamper water treatment operations -adversely affect aesthetics, resort trade, and waterfront property values -produce toxins that harm animals drinking the water Describe the general growth habits of, means of dispersal and potential problems caused by: Emergent aquatic plants correct answers-*growth habits*: rooted in shallow water, most growth above water -*means of dispersal*: underground root systems -*potential problems*: very dense and may exclude recreational pursuits like boating, fishing, and swimming. Purple loosestrife is an example of a problem species. Describe the general growth habits of, means of dispersal and potential problems caused by: Submergent aquatic plants (both pondweeds and plants with whorled leaves) correct answers-*growth habits*: grow mostly under water surface, pondweeds sometimes have floating leaves in addition to their submerged leaves; whorled-leaf plants grow underwater with whorled leaf attachments -*means of dispersal*: pondweeds have extensive root systems, runners, and can also reproduce from seeds; plants with whorled leaves can disperse when uprooted by breaking free and getting moved by the wind -*potential problems*: most pondweeds not nuisance except for curlyleaf pondweed and sometimes sago pondweed; whorled leaf plants can uproot and break free easily and drift with wind to clutter