characteristics
The change from an aquatic larval stage to a terrestrial adult form.
What is metamorphosis?
It means "tailless."
What does "annura" mean?
The aquatic, fishlike larva of a frog or toad.
What is a tadpole?
Blood is closed at all times within vessels.
What is a closed circulatory system?
It detects smell.
What does the olfactory lobe do?
Gills, lungs, and skin.
What are the three means of respiration of an amphibian?
It means "tail."
What does "caudata" mean?
The embrace during reproduction.
What is amplexus?
3 chambers.
How many chambers does their heart have?
It detects sight.
What does the optic lobe do?
Their eggs lack shells or double membranes.
Why must amphibian eggs be laid in water or moist environments?
It means "naked."
What does "gymno" mean?
It is used as a food source.
What happens when the tail is reabsorbed?
2 atria.
How many atria in their heart?
It controls the heartbeat.
What is the medulla oblongata?
They allow them to use fins like legs.
What is the purpose of the preadaptation of bones in their lobed fins?
It means "related to the skin."
What does "cutaneous" mean?
Thyroxine.
What hormone controls metamorphosis?
Pulmonary and systemic.
What loops does their circulatory system have?
Three membranes.
How many membranes do their eyes have?
It became the lungs of lobe-finned fish or swim bladder of bony fish.
What did the preadaptation of pouches extending from the digestive tract become?
It means "blind."
What does "caecilian" mean?
Her ovaries swell and she carries mature eggs.
In the left atrium.
A primitive eardrum.
What is the tympanic membrane?