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?
Whales communicate using this.
What is a Echolocation?
Temperatures in this ocean layer are near water's freezing point
What is the abyss?
Give 2 examples of organisms found in phylum Mollusca.
What are snails, clams, squid or octopus?
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?
Name the 2 major types of whales
What are toothed and baleen?
When a shark looses one of these another will move forward to take its place.
What are teeth?
This ocean circles the earth along the coast of Antarctica and is not a basin.
What is the Southern Ocean?
Which ocean invertebrate mentioned in the book is in the phylum Porifera. (hint: hear the word "pores" in the name?)
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?
These slow moving, plant eating animals don't actually have any blubber.
What are manatees?
This ocean layer goes from 1000m to 4000m deep and has no light.
What is the midnight layer?
Name the 2 basic body forms that jellyfish mature into.
What are polyp and medusa?
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?
This ocean creature can lay up to 150 eggs.
What is a sea turtle?
What are cyanobacteria?
Name the unique body design that helps echinoderms move.
What is the water vascular system?
A close living situation between 2 species where at least one of the species benefits
What is symbiosis?
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?
This Class contains whales, dolphins, seals, and manatees.
What is Class Mammalia?
This ecosystem is a relatively small environment and has the greatest environmental changes of all ecosystems
What is the intertidal zone?