Vocabulary
The backbone is a segmented column of bones called ___________.
Vertebrae
Some chordates only have a _____ in the embryo stage of life.
Tail
__________ = warmblooded
Endotherm
Amphibian means "___________"
Double Life
A _______ is an egg that holds fluid that protects the embryo.
Amniotic Egg
______ is a saclike organ that takes oxygen from the air and delivers oxygen to the blood.
Lung
________ is a stiff, but flexible rod that gives the body support. In most vertebrates this is replaced by a backbone.
Notochord
_____________ - a row of sense organs along each side of a fishes body. (detects vibrations)
Lateral Line System
______ is an immature frog or toad that must live in the water.
Tadpole
Reptiles are well adapted to living on land because of 3 things. What are those 3 things?
Have thick, scaly skin
Have lungs
Lay amniotic eggs
________ is a phase in the life cycle of many animals during which a rapid change from the immature form of an organism to the adult form takes place.
Metamorphosis
_______ are pouches that develop into gills or other body parts as the embryo matures.
Pharyngeal Pouches
_________ = Coldblooded
Ectotherm
_________ are amphibians that do not have legs and are shaped like worms or snakes.
Caecilians
A reptile can lat its eggs on land because
The egg shell keeps moisture inside the egg.
________ is a respiratory organ in which oxygen from the water is exchanged with carbon dioxide from the blood.
Gill
______ ________ ______ is also called the spinal cord.
Hollow Nerve Cord
_________ is a gas-filled sac that is used to control buoyancy.
Swim Bladder
How do amphibians obtain oxygen?
By breathing air into their lungs and absorbing it through their skin.
What are the most common reptiles?
Snakes and Lizards
________ is the tough material that the flexible parts of our ears and nose are made of.
Cartilage
What are the 4 body parts of a Chordate?
Tail, Notochord, Hollow Nerve Cord, and Pharyngeal Pouches
What are the 3 classes of fishes?
What is the most common amphibian?
Frog and Toad
What are the 5 features of the amniotic egg?
Shell, Albumen, Amniotic Sac, Yolk, and Allantois