Amphibian Characteristics Flashcards
The word amphibian comes from the Greek word _____?
double life
Amphibians were the first land _____?
vertebrates
Yes or no?
Amphibians are ecothermic.
Yes
Yes or no?
Their body temperature changes when the temperature of their surroundings changes.
Yes
This period of inactivity during cold weather is called _____?
hibernation
Inactivity during the hot, dry months is called _____?
estivation
Amphibians also have small, simple, sack-like lungs in the chest cavity for the exchange of _____ and _____.
oxygen and carbon dioxide
Yes or no?
Amphibians have moist skin that is smooth, thin, and without scales, and helps prevent water loss.
Yes
They have many _____ directly beneath the skin and in the lining of the mouth.
capillaries
The _____ chambered _____ in amphibians is an important change from the circulatory system of fish.
three chambered heart
Some salamanders have no lungs and breathe only through their _____?
skin
Even though amphibians are adapted for life on land they depend on _____ to reproduce.
water
Most amphibians live in _____?
freshwater
Amphibians eggs are fertilized externally by the _____?
male
In most species the _____ lays eggs in a pond or other body of water.
female
