WorksheetsMarine Ecosystems
Total questions: 15
Worksheet time: 15mins
Why doesn’t photosynthesis occur in deep ocean water?
The water temperature is too cold
There is no sunlight
There are not enough nutrients
The salinity level of the water is too high
A tropical or subtropical marine swamp that is characterized by the abundance of low to tall trees
Coral Reef
Estuary
Marshes
Mangrove Swamp
What makes an estuary wildlife unique
They are pretty
They can handle different levels of salinity
They grow to huge sizes
They eat lots of freshwater organisms
Both the arctic and antarctic ecosystems...
have penguins as intermediate predators.
have polar bears as top predators.
have plankton at the base of the food chain.
have large amount of land area with plants.
Which biome is pictured below?
freshwater
wetland
coral reef
ocean
The major abiotic factors that influence aquatic ecosystems include
water temperature and amount of light
plants and animals
water and plants growing there
Amount of dissolved salt
estuary
eutrophication
salinity
runoff
Which of these determines what types of organisms live in water?
water temperature
oxygen levels of water
sunlight & nutrients
water temperature, oxygen levels, sunlight & nutrients
Which of the following is a primary producer in marine ecosystems?
Phytoplankton
Zooplankton
Small fish
Coral
What is the main reason coral reefs are important to marine life?
They provide food for large fish
They offer shelter and breeding grounds
They increase water temperature
They produce salt
Which marine ecosystem is known for its high biodiversity and complex food webs?
Open ocean
Coral reefs
Deep sea
Polar seas
What is the primary factor that affects the distribution of marine organisms?
Water depth
Salinity
Temperature
All of the above
How do mangrove forests benefit coastal ecosystems?
They increase salinity
They provide oxygen
They protect shorelines from erosion
They decrease water temperature
Which of the following is a characteristic of estuarine environments?
High salinity
Low biodiversity
Fluctuating salinity
Stable temperature
What role do marine algae play in the carbon cycle?
They release carbon dioxide
They absorb carbon dioxide
They convert carbon dioxide to methane
They have no role
