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