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