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