Fill in the blank in each of the following statements.
- Amphibians have a and skin.
- Amphibians never have on their toes.
- An adult frog has a heart with chambers.
- A clear membrane protecting the amphibian eye is called the membrane.
- The connects the middle ear with the mouth cavity.
- teeth are located in the roof of the frog's mouth.
- Frog tadpoles have a heart with chambers.
- The exchange of gases between the lungs and the air is known as respiration.
- The tail of a salamander is flattened from to aid in swimming.
- Frogs are in the Order , which means "without a tail".
- A is a cavity which collects deposits from intestine, urinary bladder, and sex organs.
True-false questions, use a plus (+) for true or a zero (O) for false.
12. Frogs can breath under water.
13. The mouth is connected to the stomach with the esophagus.
14. Amphibian eggs are fertilized externally .
15. Tree frogs are commonly seen around the Frontier School building.
16. Salamanders are almost always found in water.
17. The toes of toads are not webbed.
18. Toads secrete substances on their skin for protection..
19. Amphibians are warm-blooded.
20. The American Toad is a very rare toad in Oklahoma.