15.4 Bio

​IV. Marine Ecosystems (15.4)

​1.Ocean Zones

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A. Divided into open sea (pelagic) and ocean floor (benthic zone)

Multiple Choice

What is the ocean zone divided into?

• Open Sea and Ocean Floor

• Top and Bottom

• Left and Right

• Zones

​B. Divided between areas that receive (photic zone) and those that do not (aphotic zone)

Multiple Select

What are the two zones that are based on how much light the area receives?

• Photic

• Phonic

• Phonetic

• Aphotic

​C. Ocean also separated into zones using distance from shoreline and water depth

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1) Intertidal zone- between high and low tide lines​

Multiple Choice

Which ocean zone is between the high and low tides?

• bathyal

• intertidal

• neritic

• abyssal

​2) Neritic Zone- extends from intertidal out to edge of continental shelf

Multiple Choice

Which ocean zone extends from intertidal out to continental shelf?

• bathyal

• intertidal

• neritic

• abyssal

​3) Bathyal Zone- extends from edge of neritic zone to base of continental shelf

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4) ​Abyssal Zone- lies below 2000 meters and is in complete darkness

Multiple Choice

Which ocean zone extends from edge of neritic zone and to continental shelf?

• bathyal

• intertidal

• neritic

• abyssal

Multiple Choice

Which ocean zone is in complete darkness 2000 meters below?

• bathyal

• intertidal

• neritic

• abyssal

​D. Life in Neritic Zone- only 1/10th of ocean but majority of biomass (most biomass consists of plankton)

Multiple Choice

Which zone has the majority of the ocean's biomass?

• Neritic

• Abyssal

• Intertidal

• Bathyal

​B. Coastal waters contain unique habitats

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1.Coral Reefs- found within tropical zone and ​contains large biodiversity

​2) Kelp Forests- found in cold, nutrient rich waters

Multiple Select

What are the two unique habitats found in the ocean?

• Coral Reef

• Seaweed

• Kelp Forest

• Oyster Reefs