Open Ocean and Deep Sea Flashcard 2025

Front

Where does the energy for chemosynthesis come from?

Back

chemicals

Front

What is the producer in the hydrothermal vent ecosystem? Options: kelp, seagrass, Archaea bacteria, sea pig

Back

Archaea bacteria

Front

Deep sea animals use bioluminescence to:

Back

all of these

Front

Which division of the ocean is at the surface?

Back

Epipelagic

Front

Which division of the ocean is the deepest? Options: Bathypelagic, Hadalpelagic, Epipelagic, Mesopelagic

Back

Hadalpelagic

Front

Where do deep ocean organisms get their nutrients?

Back

marine snow and chemosynthesis

Front

Bioluminescence: is an adaptation for living in the dark, is caused by a chemical reaction, can be from eating bioluminescent organisms.

Back

All of these

Front

Which statement is TRUE:
1. Organisms can move between zones to feed.
2. Zones are fixed, and there is no movement of organisms between zones.

Back

Organisms can move between zones to feed.

Front

The deep sea scavengers include animals that feed on:

Back

dead animals

Front

Which of the following is the deepest of the ocean waters?

• mesopelagic
• abyssalpelgic
• epipelagic
• hadal pelagic

Back

hadal pelagic