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64 Cards in this Set

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  • Back
what are some characteristics shared by most fish/
1. cold blooded
2. gills to breathe2
3. hearth w/ 2 chambers
4. fins for swimming
what is ichthyology?
the study of fish
what is the smallest known fish? the largest?
smallest: Pandaka pygmaea (of the philippenes)

largest: whale shark
where do most fish live?
on or near the continental shelf
in 1978, a research group lowered baited traps and a camera through the Ross Ice Shelf to a depth of 600 m below sea level to discover many new species of fish. Where is the Ross Ice Shelf located?
in Antarctica
what is a living fossil?
any organism that was once thought to be extinct but was actually found to be alive
what are 2 fish that can walk on land?
catfish and lungfish; they can breathe air
where are the nostrils of most fish located?
in the front, behind the mouth opening
can fish hear?
yes, much in the same way as humans, but there are significant differences
why are the electric eels called that?
they generate a potential difference (voltage), sometimes up to 600 V to shock and immobilize prey
what are Oteichthyes and Chondrichthyes
Oteichthyes- bony fish (90% of fish)

Chondrichthyes- cartilignous fish (10%)
in what kingdom and phylum are fish?
Kingdom Animalia and Phylum Chordata
give an example of a fish that is bony and cartilaginous
the coelacanth (a fish that was thought to be extinct at one time)
what are some examples of Osteichthyes (bony fish)?
tuna, sailfish, eels, cod, salmon
what is a prehensile tail?
a tail that can wrap around things, such as the tail of a seahorse
what is the brood pouch?
an opening in a male seahorse's abdomen where eggs are placed and eventually hatch
what fish are called the "hitchhikers of the oceans"? why?
remoras, because they take rides on sharks and other marine mammals in a mutualistic relationship where the remora eats parasites and leftover food that surrounds the host
what spiny fish can inflate itself to as much as 3 times its normal size to ward off would be predators?
the spiny pufferfish
what are gobies?
the largest group of predominantly ocean fish
the four eyed fish. why should you know about it for Ocean Bowl?
it has two eyes that are essentially split in two (hence, the name four eyed fish). the upper part is for seeing in the air; the lower part is for seeing underwater, allowing it to see both places at the same time
what fish is often called one of the "ugliest sea creatures"?
the anglerfish, because they are flabby, lump, with huge mouths filled with sharp long irregular teeth
True or fAlse: Chondrichthyes have no swim bladders, so they must keep moving or else they will sink
True
what is the difference between cartilage and bone?
cartilage is softer and more flexible than bone, but still strong enough to support the body
what is the skin of a shark like?
it looks smooth and slippery, but it's covered with sharp scales
what is the largest shark?
the whale shark
what is considered to be the "least dangerous" shark? what is the "most dangerous"?
least dangerous: the whale shark
most dangerous: the great white shark
each year, about how many people are attacked by sharks?
100
what kind of a shark was the one in _Jaws_ ?
great white shark?
T or F: it is estimated that in any given year, more people in the US are killed by pigs than sharks
True
what is the favorite prey of great white sharks?
elephant seals
why is the shark's immune system considered unique?
sharks can ward off almost any disease, including cancer
what are the Agnathans?
lampreys and hagfish; jawless cartilaginous fish that grasp or suck
T or F: hagfish and lampreys are parasitic
True
what phylum are flatworms?
Platyhelminthes
what phylum are ribbon worms?
Nemertea
what phylum are round worms?
Aschelminthes
what phylum are peanut worms?
Sipuncula
what phylum are arrow worms?
Chaetognatha
what phylum are segmented worms?
Annelida
what are the longest known worms?
the ribbon worms
how are comb jellies different from jellyfish?
1. comb jellies cannot sting
2. comb jellies are divided into 8 sections by cilia
3. comb jellies move forward and backward; jellyfish can only move vertically
what are brachiopods?
invertebrates with bivalve shells; a pair of arms inside its shell attached with tentacles used to capture food particles. ex: lampshells
what are collar cells?
flagellated cells that beat and draw in H2O from which they absorb and digest food
what are amebocytes?
transport cells in sponges that take food and other particles through the mesoglea to destination cells
what is the osculum?
excurrent pores in sponges through which wastes and water are expelled
what is the spicule?
a rigid structure that gives a sponge form and is made of silicon or CaCO3 (lime)
what is spongin?
flexible material in sponges that adds strength and rigidity
describe asexual reproduction in sponges.
it occurs by budding: gemmules (small mass of spicules and amebocytes) break off and regenerate the rest of the sponge
describe sexual reproduction in sponges
sperm cells pass out of an excurrent pore of one sponge and are picked up by an incurrent pore of another sponge; sperm cells are ingested by collar cells and transferred to amebocytes, which carry the sperm to egg, eventually forming a zygote. the zygote is released and it settles on the sea floor and grows
how many cells layers does a hydra have?
2, ectoderm and endoderm (mesoglea is the region in between)
What large dolphin is the world's most widely distributed mammal?
Killer whale
what's the leopoard seal's main prey?
penguins
What small bird migrates from the Arctic to the Antarctic and spends the most anmount of time in the sun?
Arctic Turn
what's the largest predatory sea fish?
great white shark
T or F: all life in the sea is ultimately dependant upon sunlight for energy
F; HTV communities
what brightly colored, orange and white fish are adapted to live among anemones?
clownfish
what invertebrates swim strong enough to be classified as nekton?
squid
which shark holds the record for being the world's largest fish
whale shark
what fish escapes predators by gliding with pectoral fins?
flying fish
do non floating non swimming oranisms dwell in the pelagic or benthic zone?
benthic
T or f: animals that are attached to the sea floor are typically carnivrous
false; filter feeders
which whale produces the longest, most complex sound sequence of any animal
humpback whale
what small mangrove dwelling fish knocks insects out of the water by spitting water at them?
archer fish
T or F: when O2 becomes low on seawater, most organisms come to breathe air
false