Vertebrates

An animal whose body regulates its own temperature by controlling the internal heat it produces is a(n):

• ectotherm

• endotherm

• crosstherm

All verebrates have a backbone.

• True

• False

Body temperature changes depending on the

temperature of its environment.

• endotherm

• ectotherm

• notocord

• vertebra

The body of a(n) ________________________ regulates its temperature.

• endotherm

• ectotherm

• notocord

• vertebra

One of the bones of the spinal column is called a(n)

________________________.

• endotherm

• ectotherm

• notocord

• vertebra

Vertebrates are a subgroup of the phylum known as the

________________________.

• endotherm

• ectotherm

• chordates

• vertebra

As water flows over the gills, oxygen moves from _____ into the fish's blood.

• fire

• earth

• air

• water

Which of the following IS NOT a major group of fishes?

• jawless fishes

• respiratory fishes

• bony fishes

• cartilaginous fishes

Three adaptations that all reptiles have for conserving water are their kidneys, eggs with shells, and ____________.

• thick skin

• ectotherms

• water

• lungs

Reptiles are ______, therefore they are cold-blooded.

• thick skin

• ectotherms

• water

• lungs