Most fresh water fish are hypertonic, meaning their body cells contain more salt than the surrounding water. Since osmosis should push water into their cells, why don’t they explode? (Ch. 12, Section “Salinity”)

Because they don’t drink water and excrete a large volume of dilute urine

What is the primary difference between pelagic environment zones below the photic zone? (Ch. 12, Section “What Are Living Things, and How Are They Classified?”)

The pelagic zone is a watery world and is uniform just about everywhere, but below it are many different types of environments.

What are the reasons the ocean has a smaller daily, seasonal, and annual temperature range than that experienced on land? (Ch. 12, Section “Temperature”)

The heat capacity of water is much higher than that of land o Ocean warming is reduced substantially because of evaporation o Radiation can penetrate several tens of meters deep o Water has good mixing mechanisms that transport heat

What is the definition of eurythermal? (Ch. 12, Section “Temperature”)

Describes species that are little affected by different temperatures and can withstand even rapid changes

• How does water pressure change with depth? (Ch. 12, Section “Pressure”)

Water pressure increase about 1 kg per square centimeter with every ten meters of water depth.

• What is the euphotic zone? (Ch. 12, Section “What are the main divisions of the marine environment?”)

The zone that extends from the surface to a depth where enough light still exists to support photosynthesis (rarely deeper than 100 m/330 ft)

• What are the 4 biozones of the oceanic province? (Ch. 12, Section “What are the main divisions of the marine environment?”)

o Epipelagic o Mesopelagic o Bathypelagic o abyssopelagic

• What is the neritic province? (Ch. 12, Section “What are the main divisions of the marine environment?”)

The province that extends from the shore seaward and includes all water less than 200 meters deep

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OCE1001 Exam 3

Question	Answer
Most fresh water fish are hypertonic, meaning their body cells contain more salt than the surrounding water. Since osmosis should push water into their cells, why don’t they explode? (Ch. 12, Section “Salinity”)	Because they don’t drink water and excrete a large volume of dilute urine
What is the primary difference between pelagic environment zones below the photic zone? (Ch. 12, Section “What Are Living Things, and How Are They Classified?”)	The pelagic zone is a watery world and is uniform just about everywhere, but below it are many different types of environments.
What are the reasons the ocean has a smaller daily, seasonal, and annual temperature range than that experienced on land? (Ch. 12, Section “Temperature”)	The heat capacity of water is much higher than that of land o Ocean warming is reduced substantially because of evaporation o Radiation can penetrate several tens of meters deep o Water has good mixing mechanisms that transport heat
What is the definition of eurythermal? (Ch. 12, Section “Temperature”)	Describes species that are little affected by different temperatures and can withstand even rapid changes
Freshwater fish are isotonic, hypertonic, or hypotonic relative to their environment? (Ch. 12, Section “Salinity”)	Hypertonic
• How does water pressure change with depth? (Ch. 12, Section “Pressure”)	Water pressure increase about 1 kg per square centimeter with every ten meters of water depth.
• What is the euphotic zone? (Ch. 12, Section “What are the main divisions of the marine environment?”)	The zone that extends from the surface to a depth where enough light still exists to support photosynthesis (rarely deeper than 100 m/330 ft)
• What are the 4 biozones of the oceanic province? (Ch. 12, Section “What are the main divisions of the marine environment?”)	o Epipelagic o Mesopelagic o Bathypelagic o abyssopelagic
• What is the neritic province? (Ch. 12, Section “What are the main divisions of the marine environment?”)	The province that extends from the shore seaward and includes all water less than 200 meters deep
• What is the deepest zone of the suboceanic province? (Ch. 12, Section “Benthic Environment”)	The hadal zone

Created by: SilhouetteXD

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