What is a scientist who studies animals called?

• botanist

• physicist

• zoologist

• cytologist

About what percent of animal species are invertebrates?

• 3%

• 37%

• 69%

• 97%

Which class of vertebrates absorbs oxygen by using gills?

• fish

• mammals

• reptiles

• birds

Which class of vertebrates has young that are born live?

• reptiles

• birds

• amphibians

• mammals

Which two classes of vertebrates are homeotherms because their body temperatures remain relatively constant?

• fish and birds

• mammals and amphibians

• birds and mammals

• amphibians and reptiles

Which class of vertebrates has organisms that go through metamorphosis during their life cycles?

• mammals

• amphibians

• reptiles

• birds

Which words best describes a dog?

• reptile

• amphibian

• vertebrate

• invertebrate

Tags

NGSS.MS-LS4-2

Match the class of vertebrate to the description of its skin.

• skin with scales

• mammas

• dry, scaly skin

• fish

• skin with hair

• birds

• skin with feathers

• amphibians

• moist, smooth skin

• reptiles

Match the following words to the definitions.

• vertebral column

• An animal with a relatively constant body temperature

• spinal cord

• Anther name for vertebrate's spine

• poikilotherm

• The skeleton of a vertebrate

• endoskeleton

• An animal whose body temperature changes with its surroundings

• homeotherm

• Carries messages to and from the brain

Tags

NGSS.MS-LS4-2

Match the following words with the definitions.

• invertebrate

• The young of an amphibian

• larva

• Bones of a vertebrate's skull that cover and protect the brain

• metamorphosis

• A change of body form during an animal's live cycle

• cranium

• An animal that does not have a vertebral column

Tags

NGSS.MS-LS4-3