Marine Biology Review 2023

A fish use a bioluminescent bacteria ‘glow’ to lure in prey. What

ocean zone is this fish found in?

• intertidal zone

• neritic zone

• photic zone

• abyssal zone

Phytoplankton are producer, what zone do they need to live in?

• intertidal zone

• neritic zone

• phototic zone

• abyssal zone

In the Chesapeake Bay food web below, which

organism is indirectly getting energy from the phytoplankton?

• small planktivorous fish

• herbervous ducks

• wading birds

• bivalves

Answer explanation

Note the word 'indirectly.'

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Which of these is an abiotic factor that affects the organisms in the

marine ecosystem?

• the number of scavengers

• the number of phytoplankton

• the amount of salt in the water

• the amount of bacteria in the water

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NGSS.MS-LS2-1

When both organism benefit from the relationship this symbiotic relationship is,

• commensalism.

• mutualism.

• parasitism.

• predator/prey.

When one organism benefits and the other is harmed this symbiotic relationship is,

• commensalism.

• mutualism.

• parasitism.

• predator/prey.

The arctic grayling is a fish that eats insects, small fish, and fish

eggs. Which of the following best describes the niche of the arctic

grayling?

• herbivore

• decomposer

• omnivore

• carnivore

Organisms that move with the current are in which lifestyle?

• plankton

• nekton

• benthos

• demersal

What internal structure allows phytoplankton to stay in the photonic zone?

• an oil filled vacuole

• biolumence

• thick walls of cellulose

• clear frustule made of silica

An organism which has two different lifestyles in their life, for example a plankton drifter a juvenile and a benthic bottom dweller as a adult. What describes their lifestyle the best?

• holoplankton

• meroplankton

• nekton

• benthos