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Final Exam BIO 373 questions with complete solutions
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Final Exam BIO 373 questions with complete solutions
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Final Exam BIO 373Largest Catches are taken from - correct answer ✔✔western pacific, China
upwelling areas
clupeoid fishes such as sardine
fish meal, fish oil
Declined areas - correct answer ✔✔Atlantic pacific Mediterranean
cods and related fish - correct answer ✔✔caught with trawls
tuna - correct answer ✔✔longlines or gill nets
sea urchins - correct answer ✔✔used for gonads
stock - correct answer ✔✔size of a population
ghost fishing - correct answer ✔✔trapping by abandonded fishing gear
EEZ - correct answer ✔✔exclusive economic zone, allows nations to protect 200 nautical miles
dead zone - correct answer ✔✔hypoxic, oxygen depleted, bottom of coastal waters due to increase in
bacterial composisiton caused by nutrient pollutoin of agricultural run off
corals die due to - correct answer ✔✔sediment which creates murky water and reduces light
fishing with explosives
ocean acidification
coral bleaching
, trawling
coral bleeching - correct answer ✔✔explosion of zoozanthelle from response to stress
Deep sea environment - correct answer ✔✔high pressure, cold, lower dissolved oxygen (5 ppm),
bioluminescence, slow currents, lots of sediments.
food chains are energy-poor
usually begin with detritus and bacteria
Most animals have low-energy tissues
Life gets sparser the deeper one goes
beneficial to be large b/c reduced predation pressue
spongey tissue w/ lots of water (increases body size)
Mesopelagic - correct answer ✔✔midwater or "twilight zone"
faint light, but not enough for photosynthesis
Occupants: bacteria, salps, shrimp, jellys, swimming (cirrate) octopods, vampire/other squids, fish
Many bioluminescent
decently diverse
males often parasitic on females
large mouth for broad arrange of prey
large invertebrates
Pressue - correct answer ✔✔Increase of 1 bar (atmosphere) each 10m
So, 20 to 1000 atm between 200 and 10000m
Many biological effects:
effects on rate of enzyme function, muscle enzymes of deep sea fishes: low conc. & less
effective,reduced fluodoty of membranes,
sluggish movement, "float and wait" predators , fluid lipids in membranes of deep sea organisms,
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