Pelagic Zone

The pelagic organisms in the ocean can be divided into these two major groups:

• benthic and pelagic

• pelagic and oceanic

• plankton and neritic

• plankton and nekton

Tags

NGSS.MS-LS2-1

This zone is from the surface to 200 meters deep and is also called the photic zone:

• epipelagic zone

• bathypelagic zone

• mesopelagic zone

• benthic zone

Tags

NGSS.MS-LS2-1

This ocean zone is from 200 to 1000 meters deep and is also called the twilight zone because it has very minimal sunlight:

• mesopelagic zone

• bathypelagic zone

• epipelagic zone

• neritic zone

This is the deepest ocean zone, from 6000 - 11,000 meters, in the ocean trenches:

• abyssopelagic zone

• bathypelagic zone

• hadopelagic zone

• neritic zone

These three zones are collectively referred to as the deep sea:

• bathypelagic, abyssopelagic, hadopelagic

• intertidal, neritic, oceanic

• mesopelagic, abyssopelagic, hadopelagic

• mesopelagic, bathypelagic, abyssopelagic

What factors are likely to limit the growth and productivity of plants and algae if there is not enough available?

• bacteria and viruses

• light and nutrients

• hydrogen ions

• epiphytes

Tags

NGSS.MS-LS2-1

NGSS.MS-LS1-5

What is the smallest category of plankton, including many kinds of marine bacteria and viruses?

• microplankton

• nanoplankton

• picoplankton

• femtoplankton

Which zone of the pelagic zone is known for having the highest biodiversity?

• Epipelagic zone

• Mesopelagic zone

• Bathypelagic zone

• Abyssopelagic zone

What is the primary source of energy for organisms living in the epipelagic zone?

• Hydrothermal vents

• Photosynthesis

• Chemosynthesis

• Detritus

Tags

NGSS.MS-LS1-6

Which of the following zones is characterized by complete darkness and is located below the mesopelagic zone?

• Epipelagic zone

• Bathypelagic zone

• Neritic zone

• Intertidal zone