One group of bony fish, the __________, were thought to have been extinct for more than 70 million years.
Which one of the following is an example of a jawless fish?
Which animals are ectothems with thick, dry, waterproof skin?
Why might a farmer like to see snakes in a barn where grain is stored?
|A)||Snakes eat rats and mice.|
|B)||Snakes eat grain.|
|C)||Snake eggs are good to eat.|
|D)||Snakes are biological indicators.|
If you ate a tuna-fish sandwich, what type of fish would you be eating?
How would you expect the internal body temperature of an animal that is an endotherm to change on a cold winter day?
|A)||Its temperature should go up.|
|B)||Its temperature should go down.|
|C)||Its body temperature should be 0ºC.|
|D)||Its temperature should not change much.|
Snakes can swallow their prey whole because they have __________.
|C)||the ability to constrict|
|D)||a special joint in their jaw|
In chordates called vertebrates, backbones partly or entirely replace the __________.
Which one of the following organisms is an amphibian?
Water taken in through the mouth of a fish passes over the __________, where oxygen and carbon dioxide are exchanged.
What system do fish use to sense their environment and detect movement?
|C)||gas exchange system|
|D)||lateral line system|
Because of their unique way of life, amphibians are considered to be __________ indicators.
Which group of vertebrates probably evolved from small, soft-bodied, filter feeders similar to present-day lancelets?
Most reptiles have a __________ heart.
The word __________ comes from the Greek word that means "double life."
Most fish __________ are made of bone and can be tooth shaped, diamond shaped, cone shaped, or round.
Most bony fish have a __________ that allows the fish to adjust its density in response to the density of the surrounding water.
Which one of the following reptiles gives the most care to its young?
What structures are found in the chest cavity of amphibians and used for exchange of oxygen and carbon dioxide?
Metamorphosis is a part of what process in amphibians?