6th Grade, Unit 5- Aquatic Ecosystems Question Preview (ID: 33417)


Ecosystems, Habitats, Water. TEACHERS: click here for quick copy question ID numbers.

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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