Chapter 7 Online Study Guide

10 Questions | By AndrewBrinker | Last updated: Mar 21, 2022 | Total Attempts: 202

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1.

Write a paragraph explaining overturn in freshwater lakes in temperate biomes. This is critically important to lakes and ponds. Lake Worth, Benbrook Lake and all the lakes around Fort Worth undergo overturn. This should be at least 6 sentences
2.

Polyps slowly build reefs by secreting a protective crust of _______________
- A.
  
  Shale
- B.
  
  Granite
- C.
  
  Limestone
- D.
  
  Pumice
3.

Approximately what percentage of the wold's coral reefs are threatend by human activities such as coastal development, overfishing, pollution and warmer ocean temperatures?
- A.
  
  40%
- B.
  
  50%
- C.
  
  60%
- D.
  
  70%
- E.
  
  80%
4.

Which of the following includes free-floating, microscopic cyanobacteria and many tpes of algae that are the producers supporting most aquatic food chains and webs?
- A.
  
  Phytoplankton
- B.
  
  Zooplankton
- C.
  
  Nanoplankton
- D.
  
  Plankton
- E.
  
  Nekton
5.

Which of the following would best describe a turtle?
- A.
  
  Phytoplankton
- B.
  
  Zooplankton
- C.
  
  Nanoplankton
- D.
  
  Plankton
- E.
  
  Nekton
6.

Look at Figure 7-3. At which of the following depths (meters) would you expect fo find the highest concentration of dissolved CO2?
- A.
  
  0 meters
- B.
  
  100 Meters
- C.
  
  200 meters
- D.
  
  500 meters
- E.
  
  1000 meters
7.

On page 155 the books talks about the euphotic zone and dissolved oxygen. Here is another example of how what we are doing in the eco column lab related to the real world and environmental science! May aquatic organisms, especially fish, die when dissolved oxygen levels fall below ___ parts per million
- A.
  
  10
- B.
  
  25
- C.
  
  5
- D.
  
  18
8.

Look at Figure 7-5. The ocean can be organized as a function of light penetration. There is the top layer that has enough light for photosynthesis, the middle layer that has light - but not enough for photosynthesis, and then the dark zone where no light penetrates. What is this deepest zone called?
- A.
  
  Euphotic
- B.
  
  Abyssal
- C.
  
  Bathyal
- D.
  
  Profundal
9.

Just like the ocean, freshwater lakes can be divided into sections based on light penetration. Which zone allows for photosynthesis?
- A.
  
  Profundal
- B.
  
  Benthic
- C.
  
  Limnetic
- D.
  
  Littoral
10.

Which of the following is an upper layer of warm water with high levels of dissolved oxygen? make sure you know these vocabulary words.
- A.
  
  Epilimnion
- B.
  
  Thermocline
- C.
  
  Hypolimnion
- D.
  
  Bathyal