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