6th Grade, Unit 5- Aquatic Ecosystems Question Preview (ID: 33417)
Ecosystems, Habitats, Water.
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ALL organisms depend on _________ to survive
a) WATER
b) OXYGEN
c) FOOD
d) SHELTER
the primary source of energy in nearly all ecosystems is
a) algae
b) plankton
c) sunlight
d) gravity
which of these is an example of a biotic factor in an ecosystem
a) sun
b) fish
c) water
d) rocks
the study of living organisms is called
a) chemistry
b) psychology
c) ecology
d) biology
wetlands are important for
a) animal life
b) flood control
c) algae growth
d) none of these
When two or more streams come together they form a
a) river
b) lake
c) tributary
d) pond
The main food producer in freshwater ecosystems are
a) plankton
b) small fish
c) algae
d) water plants
Water in ponds and lakes is
a) fast moving
b) slow moving, or not moving at all
c) salty
d) filled with sunlight
Many tributaries come together to form a
a) river
b) lake
c) stream
d) wetland
the area where the river meets the sea is called
a) estuary
b) open ocean
c) intertidal area
d) none of these
animals in the intertidal area must be able to suvive
a) under water
b) out of water
c) both in and out of water
d) in deep water
the ecosystem found near the shore is called the
a) the open sea
b) coral reef
c) estuary
d) intertidal zone
coral reefs are found in
a) shallow, tropical water
b) water with a lot of nutrients
c) deep, cold water
d) deep, tropical water
Plankton make their own food, therefore, they are considered ___________
a) decomposer
b) consumer
c) producer
d) heterotroph
This organism is considered the most important organism on Earth
a) blue whale
b) plankton
c) fish
d) algae
oceans cover ___% of Earth's surface
a) 70
b) 75
c) 80
d) 85
The natural environment where a living thing gets all of their basic life requirements is called a
a) ecosystem
b) shelter
c) habitat
d) biome
Which of these is not an examples of a freshwater source?
a) lake
b) pond
c) estuary
d) river
which of these is not one of the four major abiotic factors?
a) water
b) sunlight
c) temperature
d) plants
The worlds smallest animals is
a) bacteria
b) insects
c) plankton
d) blue whale
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