Organs for taking oxygen from water
What are gills?
A ______ swims with an up-and-down tail motion
What is a whale?
What is the major physical feature that all mollusks have?
What is a mantle?
Is this shape a polyp or a medusa?
What is a medusa?
These are the 5 basic layers of the ocean
What are sunlight, twilight, midnight, abyss, and trench?
The production of visible light by living organisms
What is bioluminescence?
Bony fishes are able to remain at a specific depth in the water because of a gas-filled sac called _______
What is an air bladder?
The 2 major types of whales
What are toothed and baleen?
The side of a cnidarian that does not have a mouth is called this.
What is aboral?
Organisms exhibiting bioluminescence are located in this marine environment
What is the deep ocean?
A branch of biology that involves the study of the ecosystems of the world
What is ecology?
The _____ ocean is not an ocean basin
What is Southern?
Upon sight, when determining the difference between a sea lion and a seal, a person should look for this?
What are external ears?
An algae's blade is similar to this plant structure
What is a leaf?
This marine environment is found in the sunlight layer and is home to hundreds of species of organisms
What is the coral reef?
A community of organisms that interact with each other and their physical environment
What is an ecosystem?
One major feature that all mollusks have is a _______
What is a mantle?
These cartilaginous creatures have species ranging in size of 10 in to 60ft
What are sharks?
Cyanobacteria convert this gas making it usable for ocean organisms to make their proteins
What is nitrogen?
Temperatures in this ocean layer are near water's freezing point
What is the abyss?
A close living situation between 2 species where at least one of the species benefits
What is symbiosis?
(Daily Double) Class Chondrichythes consists of fishes with body support of ______, not ______
What is cartilage not bone?
Echinoderms bodies are designed with a base of this many radiating parts?
What is 5?
(Daily Double) Most organisms do not move from one ocean basin to another because of these 3 main reasons
What is not being able to handle the differences in temperature, pressure, and salinity from different parts of the world
This ecosystem is a relatively small environment and has the greatest environmental changes of all ecosystems
What is the intertidal zone?