Chapter 13C

What is the intertidal zone?

• The area between high and low tide marks

• A deep oceanic trench

• A freshwater lake

• A desert region

Which zone is between the low tide mark and the edge of the continental shelf?

• Littoral zone

• Oceanic zone

• Intertidal zone

• Abyssal zone

What are benthic organisms?

• Organisms that live on or in the seafloor

• Organisms that fly in the air

• Organisms that live in freshwater lakes

• Organisms that live in desert environments

Which of the following are examples of pelagic organisms?

• Kelp

• Corals

• Phytoplankton

• Mussels

What is the depth range of the Photic zone in the open ocean?

• 0-200 meters

• 200-500 meters

• 500-1000 meters

• 1000-2000 meters

Which zone extends from 200m to 4000m and is characterized by complete darkness?

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What is the term used for the phenomenon where organisms create their own light in the Aphotic zone?

• Bioluminescence

• Photosynthesis

• Chemosynthesis

• Fluorescence

What is the main chemical building block of all living things?

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Like carbon and oxygen, ______ is a key chemical for life.

• nitrogen

• hydrogen

• helium

• argon

What percentage of the atmosphere is nitrogen?

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