Bioluminesence Quiz

OMZ

Oxygen Minimum Zones

Vertical Migrations

swim up to get food

What is the limiting resource in the deep sea

food

Uses of bioluminescence

to confuse or get away from predators & camouflage

2 ways bioluminescence is produced

photophores & symbiotic bacteria living w/ animal

What zone is bioluminescence mostly found in

Mesopelagic

Instead of staying put and waiting for food, most mesopelagic organisms make

vertical migrations

Counter illumination

use bioluminescence to camouflage

Countershading

dark colored dorsal surface, light colored ventral surface

Transparency

Camouflage, seathrough, silhouette can't be seen

How much of the world's water does the deep sea make up

75%

The deep sea is the largest habitat on earth

True

What is bioluminescence

organism's ability to produce light

Primary uses of bioluminescence

prey attraction, communication, & courtship

Vertical migrating fih

swim bladder, well

Non

migrating fih

Characteristics in common with deep sea fish

lack a swim bladder, flabby watery muscles, light weak skeletons, large mouth w/ pointed teeth

Distinguishing traits of deep sea fish

eyes are small/no eyes/blind, not countershaded, photophores not on ventral surface(belly), photophores if any right next to their little eyeballs

Days are spent in the mesopelagic but nights are spent feeding in the epipelagic

True

Deep sea

below the mesolpelagic there is no sunlight at all

Adaptations of mesopelagic animals

black/silver/red, large eyes, large mouth, photophores, small body size, extendable jaws

True or False

oxygen is not limited

Oxygen in the deep sea is replenished by thermohaline circulation and

the Great Ocean Conveyor

The water temperature is just above freezing point (35F)

Deep sea

uniformly dark, uniformly cold, uniform salinity

What is the water chemistry like in the deep sea

consistent throughout

The deep sea includes what three zones

Bathypelagic, Abyssopelagic, and Hadopelagic.