Miss Hardy's Hydrosphere Unit 2 Test: Marine Biomes & Wetlands

Saltwater biomes have around _____% salinity, while freshwater biomes have around .1%. 

• 3

• 13

• 30

• 50

The amount of saltwater on the earth’s surface is vastly larger than the amount of freshwater.

• TRUE

• FALSE

The location in which freshwater and saltwater mix at the mouth of a river is known as a(n)

• intertidal zone

• productivity zone

• euphotic zone

• estuary

In terrestrial biomes, the factor limiting photosynthesis is __________, whereas in marine biomes, it is __________.

• light, oxygen

   

• carbon dioxide, light

• light, nutrients

• nutrients, carbon dioxide

Which of the following is NOT a characteristic of an organism living in the intertidal zone?  

• the ability to be submerged under water

• the ability to photosynthesize with little sunlight

• the ability to securely attach to a substrate

• the ability to tolerate desiccation (drying out)

The portion of the ocean where sunlight is able to penetrate the water is known as   

• intertidal zone

• productivity zone

• euphotic zone

• estuary

Which of the following is NOT a condition that would be found in an area of high marine productivity? 

• Strong thermoclines

• High levels of nutrients

• Upwelling

• High amounts of phytoplankton

What type of relationship exists between stony marine corals and zooxanthellae?

• commensalistic

• parasitic

• mutualistic

• predatory

Of the following ocean zones, which makes up the greatest percentage of the open ocean?

• euphotic zone

• aphotic zone

• disphotic zone

• photic zone

Which wavelengths of light are able to penetrate deepest into the ocean?

   

• red

• purple

• blue

• yellow