Chapter 16 Marine and Coastal Systems and Resources 16. 1 Graph and Figure Interpretation Questions
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- Use Figure 16.1 to answer the following questions.
- 16.2 Matching Questions Match the following.
- 16.3 Scenario-Based Questions Read the following scenario and answer the questions below.
- Chapter 16 Answer Key Graphic
| Chapter 16 Marine and Coastal Systems and Resources
16.1 Graph and Figure Interpretation Questions 
Use Figure 16.1 to answer the following questions. In temperate and tropical regions, water temperature becomes rapidly colder as a function of depth ________. above 500 feet in the lowest parts of the deep zone in the superficial deep zone in the surface zone in the pycnocline For marine life confined to the deep zone (>3000 m) and adapted to the temperatures there are ________. only polar species would be able to move between polar, temperate and tropical zones tropical species would remain confined to the tropical deep zones all deep zone species should be able to move between polar, temperate and tropical seas temperate species would be able to move to tropical seas, but not the reverse tropical species would find insurmountable temperature barriers if they move toward the poles Which of the following is true? Polar areas lack a deep zone. Polar areas lack a pycnocline. Temperate areas lack a deep zone. Temperate areas lack a pycnocline. Tropical areas lack a surface zone. 16.2 Matching Questions Match the following. A) salt marsh B) estuary C) surface zone D) pycnocline E) pelagic zone F) littoral zone G) bottom trawling H) neritic zone I) mangrove forest J) drift netting K) deep zone Ecosystem that lies along the shoreline between the farthest reach of the highest tides and the lowest reach of the lowest tide Ocean zone where water is dense and sluggish and not affected by winds, sunlight, and daily temperature fluctuations Tree-dominated ecosystem in tropical and subtropical latitudes that consists of gently sloping sandy and silty coastal areas Area where a river flows into the ocean, mixing fresh‑ and saltwater Ocean zone that comprises approximately 18% of the ocean's water; where density increases and temperature decreases Fishing technique for capturing groundfish 16.3 Scenario-Based Questions Read the following scenario and answer the questions below. Diets that incorporate seafood can be healthy for us and kind to the environment. However, all seafood is not comparable, so choice is important. Mollusks such as oysters, mussels, and scallops are good choices if they are grown suspended in water, because dredging damages seafloors. On fish farms, this involves growing organisms on nets, trays, or racks. Because mollusks are filter feeders, farmed mollusks can actually improve water quality. Although shrimp are also filter feeders, shrimp farms, especially in Southeast Asia, are often built in coastal areas where mangroves are destroyed to make room for farms. As long as excessive quantities of grain or wild fish are not used for feed, aquaculture can be a very good alternative to open ocean fishing because it can reduce by‑catch, the pressure on wild stocks, and the fossil fuel use required at sea. Exceptions are farms that raise transgenic salmon, which often spread disease, or where the farmed fish become oversized and outcompete the native fish. These salmon consume massive quantities of fish feed, so better fish choices are farm‑raised talapia, striped bass, and sturgeon. In the wild, Pacific halibut, salmon, sablefish, and sardines are good choices because they are fished selectively. Wild grouper, shark, swordfish, tuna, and orange roughy must be consumed cautiously because water they inhabit usually contains high levels of mercury, PCBs, dioxins, or pesticides, which can biomagnify in food webs and bioaccumulate in fish tissues. Wild Chilean sea bass, Atlantic cod, and Atlantic halibut should be avoided because their populations have been overfished. Orange roughy have been overfished, reproduce slowly, and are fished with bottom‑trawlers that frequently damage bottom habitat. The main environmental problem caused by harvesting bottom-dwelling mollusks is ________. removal of keystone species introduction of invasive species habitat destruction high by‑catch bioaccumulation Farm‑raised shrimp are not a good environmental seafood choice because ________. shrimp farms are often associated with reduction in mangrove forest habitat of the bioaccumulation of toxins of high by‑catch trawling destroys coral reefs they require high quantities of wild fish feed Which of the following is not true about aquaculture? It can be resource intensive. It can result in habitat destruction. It can create mutants and spread diseases that harm native species. It directly depletes wild fish populations. It is always unsustainable Why are marine reserves ecologically better than fish farms? They restore damaged habitats and allow overfished species to reproduce and spread. Farmed fish are quickly depleted. They are met with less opposition by fishers because they provide tremendous economic benefits. They require no government regulation. Farmed fish are genetically inferior. Which of the following should be avoided because of PCB contamination? mussels oysters wild salmon tuna talapia The seafood you named in the question above puts you at risk because ________. toxins may bioaccumulate in their tissue, sickening you when you eat them it is likely to be transgenic of habitat destruction harvesting is energy intensive they are filter feeders Which of the following is not a problem with harvesting orange roughy? toxicity overfishing trawling habitat destruction high bycatch Chapter 16 Answer Key Graphic 1) D
2) C 3) B
Matching 1) F
2) K 3) I
4) B 5) D
6) G Scenario 1) C
2) A 3) D
4) A 5) D
6) A 7) E Download 55.68 Kb. Share with your friends:
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