Marine Biology

71 terms by mlister 

Ready to study?
Start with Flashcards

Create a new folder

Advertisement Upgrade to remove ads

Verbrata

Fish, sharks and marine mammals are all members of this subphylum of the Kingdom Animalia.

Sponge

Most primitive marine animal.

Phytoplankton

These are primary producers.

Diatoms

These organisms contain fatty acids and oil to help with buoyancy.

Dinoflagellates

These have two flagella to help propel them through the water.

Phycology

The study of seaweeds

Benthic

Fish and invertebrates that live on the bottom of the ocean are known as this.

Pelagic

Fish and other organisms that live in the water column are known as this.

Accessory Pigments

These allow phytoplankton and seaweeds to live deeper in the ocean where light is very reduced.

Planktos

This is a Greek word meaning 'wandering'

Silica

In diatoms, the frustule is made of __________.

Compensation

The __________ depth is the depth at which the production and consumption of oxygen by autotrophs is equal.

Zooplankton

These are the most abundant primary consumers.

Vascular

Macroalgae or seaweeds lack __________ tissue. They are thin to allow for diffuse of gases and because of the marine environment not a risk of drying out.

Mucilaginous

This material on seaweeds provides additional protection from drying out when the tide goes out.

Thalus

The body of the seaweed.

Stipes

The stem of seaweed.

Phaeophyta

Class of brown algae which includes kelp and rockweed.

Rhodophyta

This class of seaweed includes irish moss and norri.

Chlorophyta

Green algae

Gills

Aquatic arthropods exchange gases through ______________.

Radial

___________ symmetry is found in all adult echinoderms.

Lancelet

An animal that retains its chordate features throughout life is the _______________.

Osteichthyes

Bony fish belong to the class _______________.

Chondrichthyes

Sharks and rays belong to the class _______________.

Agnatha

This class includes jawless fishes such as lamprey.

Filter feeding

Sponges obtain nutrition through _____________.

Crustacea

This class includes crabs, lobsters and shrimp.

Mantle

This structure secretes the shell in bivalves.

Exoskeleton

This provides protection for arthropods.

Medusa

This form of cnidarian that has a body form like an umbrella with tentacles hanging down.

Hermaphroditic

This type of organism, like the sponge, can produce both eggs and sperm.

Regeneration

Another term for replacement or regrowth of parts in echinoderms is _____________.

Fins

Used for balance, steering and swimming in fishes.

Spawning

Breeding in fishes

Cartilage

The skeleton of sharks and lampreys is made of this.

Internal Sharks

have this type of fertilization.

Swim Bladder

This structure in fish, through altering the gas pressure, allows fish to adjust depth in the water.

Lateral Line

This adaptation in fishes allows detection movement and vibrations in the water.

Gastropods

Snails are members of this class of arthropods.

Phytoplankton

small photosynthetic organisms that form the base of ocean food web

producers

photosynthetic organism like phytoplankton

diatoms

microscopic phytoplankton that have a silicate cell wall - most abundant photosynthetic organism in ocean

photic zone

depth of ocean with sufficient sunlight for photosynthesis to occur

Benthic

means found on the bottom

planktonic

means these organisms are free-floating

Dinoflagellates

second most abundant primary producer in the ocean

Flagella

whip-like structures that help dinoflagellates move

Red Tide

large blooms of dinoflagellates with harmful effects on marine life

Adaptations enabling phytoplankton to float

large cavity in center, spines, store oils and fat

Upwelling

brings cool nutrient water to the surface that aids in phytoplankton growth

cellulose

material that makes up the cell walls of the dinoflagellates

silica

material that makes up the cell walls of diatoms

dead zone

an area of water with very low oxygen levels

autotrophic

a self-feeding organism; conducts photosynthesis

heterotrophic

an organism that eats or absorbs organic material to feed

plankton net

made of silky material with pores; is used to take water samples and to find phytoplankton

salinity

a determinant of species composition of phytoplankton communities; measured in PPT

PPT

parts per thousand; measures salinity

saltwater

between salt- and freshwater, this one is more dense

photic zone

area of the water where there is the highest amount of light

flagellae

all dinoflagellates have these for movability

net plankton

types of plankton that are larger than 10 microns

nanoplankton

types of plankton that are smaller than 10 microns

net plankton

size of plankton that comprise most of the biomass

diatom

type of plankton that is not motile

oil

where diatoms store their energy

light-dark bottle

method to measure gross primary productivity using two bottles

light

the bottle that measures net primary production in the light-dark bottle method

dark

bottle that measures respiration in the light-dark bottle method

gross primary production

all the respiration and photosynthesis in an ecosystem; found by adding the light and dark bottles in the light-dark bottle method

Please allow access to your computer’s microphone to use Voice Recording.

Having trouble? Click here for help.

We can’t access your microphone!

Click the icon above to update your browser permissions above and try again

Example:

Reload the page to try again!

Reload

Press Cmd-0 to reset your zoom

Press Ctrl-0 to reset your zoom

It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.

Please upgrade Flash or install Chrome
to use Voice Recording.

For more help, see our troubleshooting page.

Your microphone is muted

For help fixing this issue, see this FAQ.

Star this term

You can study starred terms together

NEW! Voice Recording

Create Set