The Midnight Zone

Which aphotic zone is located directly below the mesopelagic zone?

• Bathypelagic zone

• Abyssopelagic zone

• Hadalpelagic zone

• Epipelagic zone

What is a common adaptation of organisms living in the abyssopelagic zone to cope with extreme pressure?

• Bioluminescence

• Air-filled swim bladders

• Lack of swim bladder and weak muscles and bones

• Photosynthesis

Tags

NGSS.HS-LS4-2

NGSS.HS-LS4-4

In the food chain dynamics of the midnight zone, what is a primary source of nutrition for many deep-sea creatures?

• Photosynthesis

• Marine snow

• Hydrothermal vents

• Chemosynthesis

Tags

NGSS.HS-LS2-3

Which are abiotic factors of the midnight zone?

• High light levels and low pressure

• No light and high pressure

• High temperature and high salinity

• Low temperature and low salinity

Which of the following best describes the food webs of the midnight zone?

• Dominated by large predators due to the abundance of light

• Simple due to the lack of producers

• Complex due to the diversity of chemosynthetic organisms

• Nonexistent due to the extreme conditions

Tags

NGSS.HS-LS2-6

Bioluminescent organisms in the bathypelagic zone primarily use their light for what purpose?

• Attracting prey

• Photosynthesis

• Heating their surroundings

• Communication

Which is not an abyssopelagic habitat?

• abyssal plain

• cold seep

• hydrothermal vent

• trench

What is the primary challenge for organisms living in the bathypelagic zone regarding food?

• Overabundance of food

• Competition with photosynthetic organisms

• Scarcity of food

• Toxicity of available food

Tags

NGSS.HS-LS2-6

NGSS.HS-LS4-2

Which of the following adaptations is not commonly found in midnight zone organisms?

• Uniform color

• Large eyes for enhanced vision

• Bioluminescence

• Reduced skeletal structure

Tags

NGSS.HS-LS4-4

Biotic factors of the midnight zone include:

• High levels of sunlight

• Predatory fish and invertebrates

• Coral reefs

• Seaweed forests

Tags

NGSS.HS-LS2-6