Marine Zones Quiz

What is the Intertidal zone exposed to when ocean tides go out?

• Darkness

• Air

• Constant submersion in water

• High temperatures

Organisms in the Intertidal zone need to have certain adaptations to survive because:

• The water is very salty.

• They are exposed to breaking ocean waves.

• It is very dark and cold.

• There is an abundance of nutrients.

What characterizes the water in the Abyssal zone?

• Warm and light

• Dense, cold, and salty

• Shallow and nutrient-rich

• Fresh and oxygenated

How do nutrients reach animals in the Abyssal zone?

• Through underwater plants

• Via thermal vents

• As marine snow falling from above

• Carried by strong currents

What happens to conditions such as pressure, temperature, and light as you go deeper in the Pelagic zone?

• They all increase.

• They remain constant.

• They all decrease.

• Pressure increases, temperature and light decrease.

What is the Benthic Zone?

• The ecological region at the highest level of a body of water

• The ecological region at the lowest level of a body of water

• The ecological region at the surface of a body of water

• The ecological region in the middle layer of a body of water

Where does the Benthic Zone start?

• In the open ocean

• At the shoreline and goes down until it is deep

• At the continental shelf

• At the water's surface

What does the Benthic Zone encompass?

• Only the water column

• Only the surface of the water

• The sediment surface and subsurface layers

• The atmospheric layer above the water

Why is the Benthic Zone vital for the health of aquatic ecosystems?

• It provides sunlight for photosynthesis

• It is the warmest part of the water body

• It contains microscopic benthic organisms that act as a source of food for bottom-feeding animals

• It is the primary source of oxygen for the water body