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6th Grade, Unit 5- Aquatic Ecosystems
Test Description: Ecosystems, habitats, water
Instructions: Answer all questions to get your test result.
1) oceans cover ___% of Earth's surface
A
85
B
70
C
75
D
80
2) This organism is considered the most important organism on Earth
A
blue whale
B
fish
C
algae
D
plankton
3) Plankton make their own food, therefore, they are considered ___________
A
heterotroph
B
producer
C
consumer
D
decomposer
4) coral reefs are found in
A
water with a lot of nutrients
B
deep, tropical water
C
deep, cold water
D
shallow, tropical water
5) the ecosystem found near the shore is called the
A
coral reef
B
the open sea
C
estuary
D
intertidal zone
6) animals in the intertidal area must be able to suvive
A
out of water
B
both in and out of water
C
in deep water
D
under water
7) the area where the river meets the sea is called
A
estuary
B
open ocean
C
none of these
D
intertidal area
8) Many tributaries come together to form a
A
stream
B
lake
C
wetland
D
river
9) Water in ponds and lakes is
A
salty
B
filled with sunlight
C
slow moving, or not moving at all
D
fast moving
10) The main food producer in freshwater ecosystems are
A
algae
B
plankton
C
water plants
D
small fish
11) When two or more streams come together they form a
A
lake
B
pond
C
river
D
tributary
12) wetlands are important for
A
none of these
B
algae growth
C
flood control
D
animal life
13) the study of living organisms is called
A
psychology
B
biology
C
chemistry
D
ecology
14) which of these is an example of a biotic factor in an ecosystem
A
sun
B
water
C
rocks
D
fish
15) the primary source of energy in nearly all ecosystems is
A
gravity
B
plankton
C
algae
D
sunlight
16) ALL organisms depend on _________ to survive
A
SHELTER
B
WATER
C
OXYGEN
D
FOOD
17) The natural environment where a living thing gets all of their basic life requirements is called a
A
ecosystem
B
habitat
C
biome
D
shelter
18) Which of these is not an examples of a freshwater source?
A
pond
B
estuary
C
river
D
lake
19) which of these is not one of the four major abiotic factors?
A
plants
B
water
C
sunlight
D
temperature
20) The worlds smallest animals is
A
plankton
B
blue whale
C
bacteria
D
insects
*select an answer for all questions
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