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Phylum Chordata Classification
Chordate Characteristics
Class Osteichthyes
Class Amphibia
Class Reptilia
100
The difference between these two types of animals is that one has a backbone while the other does not.
What is the main difference of an invertebrate and a vertebate animal?
100
The notochord is replaced by this structure in adult chordates.
What is the vertebrae?
100
This fin forms a convenient weapon against predators and careless fishermen.
What is the anterior dorsal fin?
100
A frog's heart consists of this many chambers.
What is a three-chambered heart?
100
All egg-laying reptiles produce this type of egg which also contributes to their ability to live their entire life on land.
What is the amniotic egg?
200
The salamander belongs to this class.
What is the Class Amphibia?
200
This animal's diet consists of eating both plants and animals.
What is an omnivore?
200
This thin-walled sac within a fish enables it to control its depth and to maintain that depth without swimming.
What is the air bladder?
200
A time of summer inactivity where the amphibian respires soleby through the skin.
What is estivation?
200
These are broad scales on the ventral surface of the snake that aid in its movement.
What are scutes?
300
The birds belong to this class.
What is the Class Aves?
300
This structure lies dorsal to the notochord and it composes the main part of the animal's nervous system.
What is the dorsal tubular nerve cord?
300
This conspicuous plate is found behind the eye on each side of a fish's head, covers its gills, and aids in respiration.
What is an operculum?
300
This membrane serves as an eardrum in the frog.
What is the tempanic membrane?
300
These are a pair of sensory pits within a snake's mouth that ais in the ability to sense the presence of certain chemicals in the air.
What are the Jacobson's organs?
400
The lizard is considered to be this type of vertebrate because it does not have the ability to generate its own body heat.
What is a cold-blooded/ectothermic animal?
400
This type of reproduction consists of organisms, such as birds and reptiles, that produce offspring from eggs that hatch outside the body.
What is oviparous reproduction?
400
This fish sense organ picks up low-frequency underwater vibrations and pressure stimuli.
What is the lateral line?
400
This chamber takes in material from the digestive, reproductive, and excretory systems of the frog.
What is the cloaca?
400
The name for the dorsal portion of a turtle's shell.
What is the carapace?
500
The shark belongs to this class.
What is the class Chondricthyes?
500
This skeletal division consists of the vertebral column, the skull, and the ribs.
What is the axial skeleton?
500
This chamber within a fish's heart recieves blood from the body tissues.
What is the atrium?
500
This membrane is a thin covering that keeps the frog's eyeball moist while the organism is out of the water.
What is a nictitating membrane?
500
This is the waste sac found in amniotic eggs that is richly supplied with blood vessels.
What is the allantois?