ESL 6 Science / 1.3 Animals

ESL 6 Science / 1.3 Animals

Fill in the Blank

animal with a segmented backbone

Multiple Choice

Vertebrates include the _____ animals on land and in the sea.

• insect

• largest

• outer

• smallest

Fill in the Blank

animal with a nerve cord running down its back

Fill in the Blank

inner skeleton

Multiple Choice

An endoskeleton is used for _____ and movement.

• cover

• mammals

• movement

• support

Fill in the Blank

soft, bonelike material

Multiple Choice

The seven classes of vertebrates are jawless fish, bony fish, soft-boned fish, _____, mammals, amphibians, and reptiles.

• arthropods

• birds

• insects

• tetrapods

Multiple Choice

Mammals have hair or fur, breathe through lungs, and feed their young with _____.

• fish

• milk

• plants

• seeds

Multiple Choice

Amphibians breathe through _____ when they are young and through lungs when they are fully grown.

• fur

• gills

• mouths

• scales

Fill in the Blank

animal without a backbone

Multiple Choice

The largest group of invertebrates, the _____, includes insects, spiders, and shellfish.

• arthropods

• bony fish

• mollusks

• segmented worms

Multiple Choice

Starfish and sea urchin are examples of _____, which live in the ocean, have spiny skins, and move very slowly.

• amphibians

• cnidarians

• echinoderms

• flatworms

Multiple Choice

Clams, snails, oysters, and scallops belong to a group of invertebrates called _____.

• echinoderms

• mollusks

• reptiles

• sponges

Fill in the Blank

outer skeleton

Multiple Choice

Arthropods have a tough exoskeleton, which must be _____ as the animal grows.

• eaten

• grown

• kept

• shed

Multiple Choice

Arthropods can also be identified by their _____ legs and segmented bodies.

• big

• jointed

• soft

• tough

Multiple Choice

The three largest groups of arthropods are crustaceans, insects, and _____.

• arachnids

• grasshoppers

• jawless fish

• shrimp

Multiple Choice

Insects have _____ pairs of legs, and arachnids have four pairs.

• four

• one

• three

• two