Oceans Zones and Food Webs Quiz

This ocean zone includes the deepest trenches, such as the Mariana Trench.. 

• Abyssal
• Pelagic
• Bathyal
• Hadal

Organisms that live on the bottom of aquatic ecosystems are known as 

• littoral 
• benthic 
• nekton

Animal members of the plankton community.

• Phytoplankton
• Meroplankton
• Holoplankton
• Zooplankton

You like to breathe? More than half of Earth's oxygen is created by ______________in the ocean, but their levels are declining because oceans are warming up.... 😠

• phytoplankton

• zooplankton

• chemosynthesis, hydrothermal vents

• agricultural plants

organisms that live on or in the bottom

• benthos
• neuston
• littoral
• heterotrophs

MOST sealife lives in the:

• Photic zone

• Twilight zone

• Midnight zone

• Deep zone

This fish pictured is an example of:

• Sessile life
• Benthic life
• Pelagic life
• Aphotic life

The aphotic zone is

• the ocean's dark lower layer where photosynthesis cannot occur
• the sunlit upper layer of the ocean where photosynthesis occurs
• on the bottom of lakes, streams, and oceans.
• where benthos are found

Which best describes what a food chain shows you?

• Energy flow through an ecosystem

• Food flowing through an ecosystem

• Consumers going into other consumers

• Who eats who

What is the role of a producer?

• Gain energy from eating other organisms

• Breaking down dead stuff

• Use sunlight to make food

• Keep other species from overpopulating