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WorksheetsMarine Ecosystems
Total questions: 17
Worksheet time: 1hrs 25mins
Which ecosystem is this? : Generally located in shallow, tropical waters; very high species diversity; most species rely in some way on the polyp-like keystone species
Estuary
Open ocean
Wetlands
Coral reefs
Which ecosystem is this? : These are areas of land that are covered/flooded by seawater for all or most of the year; the two primary types are salt marshes and mangrove swamps; many different marine and land organisms make their homes here
Estuary
Open ocean
Wetlands
Coral reefs
Which ecosystem is this? : This is the lowest, deepest layer of the ocean; contains open plains, underwater vents/volcanoes, and canyons/trenches; there is no sunlight in this ecosystem, and the species that live here have extreme adaptations that allow them to survive
Deep sea
Open ocean
Intertidal zone
Coral reefs
Which ecosystem is this? : This is the largest marine ecosystem, and covers most of Earth's surface area; it includes all marine environments that are far from shore and that are still close enough to the surface to receive sunlight
Deep sea
Open ocean
Intertidal zone
Coral reefs
Which ecosystem is this? : These ecosystems are the areas of shorelines that are left uncovered during low tide but which are underwater during high tide; they are usually rocky, but in tropical areas they may be sandy; organisms that live here need to adapt to the waves, the sun, and both marine and land predators
Deep sea
Open ocean
Intertidal zone
Coral reefs
Which ecosystem is this? : These ecosystems occur where rivers connect with oceans; the flows of nutrients carried by the rivers make these ecosystems some of the most nutrient-rich and bio-productive areas on Earth; many species live here, and many more will come here each year to breed and raise their young
Wetlands
Open ocean
Intertidal zone
Estuaries
Which of the following is true of estuary ecosystems?
They are often referred to as the "nurseries of the sea"
They often do not have enough nutrients for plants to survive
They often do not provide enough food for carnivores such as seabirds
They are not affected by expanding cities and human development
Estuaries are important because:
The provide humans large amounts of food and water
They block the water from flowing from rivers into the ocean
They form the largest portion of the ocean
They supply many resources such as oil and phosphorous
Which of the following species would you expect to find in an estuary?
Oysters
Giant squid
Reef shark
Blue whale
The base of the food web in open ocean ecosystems is:
Mangrove trees
Phytoplankton
Sea grass
Zooplankton
Which of the following is NOT TRUE of open ocean ecosystems?
They produce 50% of the world's oxygen via photosynthetic phytoplankton
Contains microscopic organisms as well as the largest animals on Earth
Huge amounts of humans' food is harvested from this ecosystem
Most open ocean animals will regularly interact with the seafloor or coastline
Which of the following is TRUE of deep sea ecosystems?
Contain high levels of oxygen due to high levels of photosynthesis
The average temperature is about 60 degrees
Subjected to pressure that is up to 1000 times greater than at the ocean surface
Minerals and nutrients are widely abundant
Which of these organisms would you NOT expect to find in the deep sea?
Viper fish
Dumbo octopus
Vampire squid
Leatherback sea turtle
Which of the following is TRUE of coral reef ecosystems?
Contain low species diversity
Found mostly in polar regions
Threatened by human activities such as ocean mining and blast fishing
Highly resistant to changes in water temperature and pH
Which of the following describes a benefit provided by marine wetlands?
The protect the shorelines from flooding and erosion, especially during storms
Act as a crucial pathway for human travel
Cause additional erosion to occur, as well as turn seawater muddy
Provide a source of minerals such as magnesium and copper
All of the following are factors that organisms in intertidal zones need to deal with EXCEPT:
Extremely high salinity as tide pools evaporate
Extreme changes in temperature
Constant wind and waves
Low levels of sunlight
Which of the following is a predator that targets intertidal zone organisms during low tide?
Great white shark
Dolphins
Octopus
Seagulls
