Why might a farmer like to see snakes in a barn where grain is stored?
|A)||Snakes eat rats and mice.|
|B)||Snakes are biological indicators.|
|C)||Snakes eat grain.|
|D)||Snake eggs are good to eat.|
Most bony fish have a __________ that allows the fish to adjust its density in response to the density of the surrounding water.
A turtle's ribs and vertebrae are fused to the inside of the top part of its __________.
One group of bony fish, the __________, were thought to have been extinct for more than 70 million years.
What structures are found in the chest cavity of amphibians and used for exchange of oxygen and carbon dioxide?
Which one of the following is a characteristic that only vertebrates have?
|B)||endoskeleton of bone or cartilage|
|C)||gill slits for filter feeding|
Most fish __________ are made of bone and can be tooth shaped, diamond shaped, cone shaped, or round.
Because of their unique way of life, amphibians are considered to be __________ indicators.
How are reptile eggs different from fish or amphibian eggs?
|A)||They are covered by a shell.|
|B)||They develop in the male.|
|C)||They are fertilized externally.|
|D)||They are small.|
Which one of the following organisms is an amphibian?
Which animals are ectothems with thick, dry, waterproof skin?
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 down.|
|B)||Its body temperature should be 0ºC.|
|C)||Its temperature should not change much.|
|D)||Its temperature should go up.|
Snakes can swallow their prey whole because they have __________.
|A)||a special joint in their jaw|
|C)||the ability to constrict|
If you ate a tuna-fish sandwich, what type of fish would you be eating?
In some fish, egg and sperm join inside the female's body. This is called __________.
Metamorphosis is a part of what process in amphibians?
What system do fish use to sense their environment and detect movement?
|B)||lateral line system|
|C)||gas exchange system|
Which one of the following is a characteristic of frogs and toads that helps them survive in the water?
|A)||tongues attached at the front of the mouth|
|C)||nostrils on top of the head|
Which one of the following reptiles gives the most care to its young?
Most reptiles have a __________ heart.