Quiz 10

Question 1

abiotic/biotic factors that shape each major deep sea ecosystem.

Answer 1

• depth/diff zones (horizontal)
• vertical zones (seafloor habitats

Question 2

deep sea layers top to bottom AND DEPTH

Answer 2

mesopelagic (starts 650ft/200m)
bathypelagic (starts 3.3k ft/1k m)
abyssopelagic (starts 13.1k ft/4k m)
hadalpelagic (starts 19.7k ft/6k m)

Question 3

mesopelagic zone- conditions, how many + what kinds of animals live here

Answer 3

some light but barely any
90% of global marine animals by weight
- squid
- krill
- jellies
- fish

Question 4

bathypelagic zone- conditions, how many + what kinds of animals live here

Answer 4

bathed in darkness (NO light- aphotic)
39 deg F/ 4 deg C
animals have limited food and therefore slow metabolisms
animals often soft, squishy, slimy
- black hagfish
- viperfish
- anglerfish
- sleeper shark
- vampire squid

Question 5

abyssopelagic zone- conditions, how many + what kinds of animals live here

Answer 5

600x as much pressure
many specialized animals
- tripod fish
- rattail fish
- octopuses
- sea cucumbers

Question 6

hadalpelagic zone- conditions, how many + what kinds of animals live here

Answer 6

(hadal- hades- closest to hell)
- deepest part of ocean, including trenches
plastic debris found here
much to discover about animals in this zone
- snailfish (deepest living fish ever found)

Question 7

snailfish

Answer 7

• found in hadalpelagic zone
  no scales
  large teeth
  no bioluminescence

Question 8

different seafloor habitats

Answer 8

abyssal plain
whale falls
hydrothermal vents
brine lakes
cold seeps
canyons + seamounts

Question 9

Describe various challenges faced by deep sea organisms and explain biological adaptations to these challenges.

Answer 9

symbiotic bacteria
quick development

Question 10

Analyze how specific impacts of deep sea mining will impact organisms that have adapted to life in various deep sea ecosystems.