Open Ocean Notes

Multiple Choice

• The largest ecosystem on earth also known as the __________________ consists of everything outside of coastal waters.

• Pelagic Zone

• Deep Zone

• Coastal Zone

• Coral Reef

Multiple Choice

• From the surface downwards abiotic factors change quickly.

• _______________ decreases with depth.

• Water

• Biodiversity

• Oxygen

• Plant resources

Multiple Choice

• There is ______________, so photosynthesis supports the food web. 

• Oxygen

• Salt

• Sunlight

• Plankton

Multiple Choice

• No place to hide unless floating debris or seaweed. 

• ________________ helps to blend with the depths or surface- species are darker on top, light on bottom. 

• O2 is abundant 

• Water

• Floating Debris or seaweed

• algae

• coral

Multiple Choice

The  _______________ is a region within the North Atlantic Gyre.

• Floating mats of seaweeds, mostly _________________ trapped by ocean currents on all sides. 

• Coral Reef

• Estuary

• Great Pacific Garbage Patch

• Sargasso Sea/Sargassum

Multiple Choice

The _________________________________ is a region within the North Pacific Gyre.

• A vast area of floating plastic trapped by ocean currents. 

• Bay

• Great Pacific Garbage Patch

• Coral Reefs

• Sargassum

Multiple Choice

• Many species live here, food is not scarce yet. 

• _____________________________________

• Mesopelagic Zone

• Pelagic Zone

• Coral Zone

• Surface

Multiple Choice

• There is a big drop in temperature here from ____________ at top of zone to 5° at bottom of zone. 

• 20 degrees

• 30 degrees

• 10 degrees

• 75 degrees

Multiple Choice

Which Zone is completely dark but the animals that live there create light

• Mesopelagic Zone

• Pelagic Zone

• Bathypelagic Zone

• Coral Zone

Multiple Choice

• Bioluminescence _____________________________________________________________

Used for attracting prey and mates, communication, and confusing predators.

• very common - light is produced as a product of chemical reactions in organs called photophores

• Light produced from photosynthesis

• Light produced from the sun

• There is no light produced

Multiple Choice

This zone the water is near freezing, and there is no light at all.

• Bathypelagic Zone

• Pelagic Zone

• Mesopelagic Zone

• Abyssalpelagic Zone

Multiple Choice

The deepest fish ever discovered was found in the

• Mariana Trench

• Puerto Rico Trench

• Texas Trench

Multiple Choice

The temperature in this zone is around

• 2-3 degrees

• 6-7 degrees

• 75 degrees

• 30 degrees

Multiple Choice

What adaptations do the organisms have in this zone?

• No adaptations are present

• Colorful features, small jaws, large teeth, transparent eyes

• Transparent skin, large eyes, expandable jaws, hermaphrodites

• Dark colored blue skin, small eyes, short jaws

Multiple Choice

What is marine "snow"

• • The biological conversion of one or more carbon-containing molecules

• actual snow that falls to the bottom of the ocean and all of the fish take advantage of the temeperature

• the organic debris, including dead plankton, fecal matter, and other decaying matter, that sinks from the ocean's surface to the deep sea, forming a crucial part of the ocean's food web and carbon cycle.