Ocean Zones and Phytoplankton

the water area between the low tide mark and the edge of the continental shelf

• nautical zone

• benthic zone

• nueston zone

• neritic zone

Tags

NGSS.MS-ESS2-4

How are phytoplankton similar to small trees?

• Both are at the top of the food chain

• Both conduct photosynthesis

• Both grow in soil

• Both are about the same size

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NGSS.MS-LS1-6

NGSS.MS-LS2-3

The diagram below shows the relationship between some of the organisms in a marine food web. Which of the following is MOST LIKELY to happen if a large number of phytoplankton are killed from runoff entering the ocean?

• The number of porpoises would probably stay the same because porpoises are far removed from phytoplankton in the food web

• The number of zooplankton would probably increase because they wouldn’t have to compete with phytoplankton for food.

• The number of salmon would probably decrease because there would be less food available for zooplankton and herring.

• The Sun would probably not emit as much energy because there would not be as many phytoplankton in the ocean.

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NGSS.MS-LS2-1

NGSS.MS-LS2-3

NGSS.MS-LS2-4

Which organisms are the basis of a marine food web?

• Crabs

• Photoplankton

• Fish

• Zooplankton

Tags

NGSS.MS-LS2-3

Which of the following is associated with dead zones in the ocean?

• A decrease in nitrogen levels.

• An increase in oxygen levels.

• An increase in the number of fish.

• Runoff from fertilizers.

Tags

NGSS.MS-LS2-1

How do the oceans contribute to the amount of Oxygen in the Earth's atmosphere?

• Fish in the ocean produce oxygen.

• Phytoplankton in the ocean produce oxygen through the process of respiration.

• Phytoplankton in the ocean produce oxygen through the process of photosynthesis.

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NGSS.MS-LS1-6

NGSS.MS-LS2-3

What happens when a fertilizer runoff happens? (a)  

• Fish get bigger.

• Algae grow rapidly.

• The water becomes very clear.

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NGSS.MS-ESS3-4

NGSS.MS-LS2-1

NGSS.MS-LS2-3

NGSS.MS-LS2-4

Which of these human activities is most likely to cause the excessive growth of phytoplankton in the world's oceans?

• The use of chemical fertilizers that are carried by runoff into rivers

• The logging of old-growth forests, which results in erosion

• The spraying of chemical herbicides that reduce carbon dioxide in the air

• The mining of fossil fuels, which requires digging underground tunnels

Tags

NGSS.MS-ESS3-4

Which ocean zone is known for having the highest concentration of phytoplankton?

• A) Abyssal zone

• B) Bathyal zone

• C) Epipelagic zone

• D) Hadal zone

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

What is the primary role of phytoplankton in the ocean ecosystem?

• A) Decomposers

• B) Primary producers

• C) Secondary consumers

• D) Tertiary consumers

Tags

NGSS.MS-LS2-3