Final Exam 2 Flashcards
Five layers of the ocean
Epiplegic (littoral) 200m; Mesopelagic (subllittoral) 1000m; Bathypelagic (bathyal) 4000m; Abyssopelagic (abyssal) 6000m; Hadalpelagic (hadal) >6000m
Three layers of light in ocean
Euphotic (20-100m) Photosynthesis;
Disophotic (100-600m) light but no photo;
Aphotic (>600m) no light, no photo
Which zone is the euphotic zone in
the epipelagic
What is the uppermost portion of the sea known as
Epipelagic Zone
What is the deepest part of the sea
Aphotic (or hadalpelagic)
What happens to temperature and light as depth and latitude increase
They decrease
What happens to pressure as depth increases
pressure increases
Where is salinity most variable
near shore
Is the temperature of the deep sea warmer in tropical or polar regions
Tropical?
T/F:Sponges are not planktonic
True. They are invertebrate that are bethnic
Most primitive types of animals
placozoan
What are cnidarians names for
their stinging cells
What are anemones and corals
Cnidarians
What are nudibranchs
a type of mollusk in the class Gastropoda
Mollusks include:
squid, snail, clam
What are sea cucumbers
echinoderms
Echinoderms include:
sea stars, sea cucumbers, sea urchins, brittle stars
Features of chordates
presence of a notochord, dorsal hollow nerve cord, pharyngeal slits
What is a cookie-cutter shark
Not a bony fish, it is a chondrichthyes
Example of nekton
any animal that can swim (whales)
Features of mysticete whales
2 blowholes, baleen, feed on plankton and small fish
Features of odontocete whales
1 blowhole, use echolocation, have teeth
Bony fish are in which class
Osteichthyes
