Frogs have _____________ fertilization.

What are the different ways that various amphibians can obtain oxygen ("breathe")?

• Lungs

• Gills

• Through their skin

• Spiracles

Describe the feature of amphibians that make them excellent bioindicators of their environment (in other words, why are they susceptible to pollution?).

The word "amphibian" refers to which of their features?

• They can use right or left hands

• They live a double life (start in water then move to land)

• They have a backbone

• They lay eggs

Salamanders are sometimes confused with lizards. Which of the following are differences between salamanders and lizards?

• Lizards have scales, salamanders have moist skin

• Only lizards lay eggs

• Only lizards have a backbone

• Lizards can live in dry places, salamanders need moisture

Amphibians are ___________________. Their temperature changes with the environment.

Which group of amphibians do you feel least comfortable being tested over?

• Frogs and toads

• Salamanders

The process of a tadpole changing to a frog is called ________________.

Which of the following is another word for "cold-blooded"?

• Endotherm

• Ectotherm

Explain why frogs and salamanders are important parts of their ecosystems.