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?

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?

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

• nitrogen

• hydrogen

• helium

• argon

What percentage of the atmosphere is nitrogen?