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Worksheetsม3 Aquatic Ecosystems
Total questions: 10
Worksheet time: 5mins
Name
Class
Date
1.
Which is NOT a freshwater ecosystem?
a)
a river
b)
a lake
c)
an estuary
d)
a stream
2.
The intertidal zone of oceans
a)
surrounds continents
b)
is on the coastline
c)
has tides that rise and fall each day
d)
is the open ocean
3.
An ecosystem where water covers the soil or water is near the surface of the soil is called
a)
a desert
b)
an ocean
c)
an estuary
d)
a wetland
4.
What abiotic factors affect aquatic ecosystems?
a)
Light, salinity, temperature
b)
Sun, moon and stars
c)
Nothing
d)
Coral reefs, whales
5.
Why does photosynthesis not occur in the deep ocean?
a)
Lack of nutrients
b)
Low oxygen levels
c)
Excess sunlight
d)
Sunlight does not penetrate
6.
Salinity refers to
a)
how many plants are in the water
b)
how many organisms live in the water
c)
how much salt in is water
d)
the volume of water
7.
Pollution produced by farming , households, industry,and other human activities can end up in ______________.
a)
streams
b)
rivers
c)
oceans
d)
All of these choices
8.
What is the biggest ecological benefit of coral reefs?
a)
tourism
b)
seafood
c)
habitat
d)
protection of shoreline
9.
A coral reef provides ________ for many aquatic animals.
a)
food
b)
shelter
c)
friends
d)
Both food & shelter
10.
What is coral bleaching?
a)
when the coral gets sick and loses its color
b)
when the coral dies
c)
the zooxanthellae turns white
d)
when the coral turns white during spawning
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