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Ch 15 2/2
Test Description: Ch 15
Instructions: Answer all questions to get your test result.
1) Which of the following properties most determines water's vertical position in the ocean?
A
density
B
oxygen content
C
organic content
D
velocity
2) Organisms that drift with cean currents are called
A
photic
B
plankton
C
benthos
D
nekton
3) What term describes organisms that live on or in the ocean floor
A
plankton
B
pelagic
C
nekton
D
benthos
4) Nekton include all animals that
A
move independently of the currents
B
drift with the current
C
live in land and on water
D
live at the ocean bottom
5) What is true about the deepest part of the ocean floor
A
algae thrive
B
animal live in constant darkness
C
temperatures are moderately high
D
nekton are more common that benthos
6) The open ocean of any depth is the
A
pelagic zone
B
benthiczone
C
abysal zone
D
neritic zone
7) What factors influence a region's photosynthetic productivity?
A
nutrients and sunlight
B
salinity and sunlight
C
temperature and density
D
sunlight and depth
8) Which term best describes energy transfer between trophic levels
A
average
B
high
C
ineffecient
D
effecient
9) A food chain is the passage of energy
A
between primary producers
B
along a single path
C
among many interactive organisms
D
between herbivores only
10) Where would a primary producer be located in a food chain?
A
first step
B
last step
C
middle step
D
each step
*select an answer for all questions
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