Topic 7 Lesson 4

Front

A ladybug's __________ helps to protect its wings.

Back

Exoskeleton

Front

A crab's shell helps protect its ____________ structure from the aquatic environment it lives in.

Back

Internal

Front

The support structure for some animals is an _______________.

Back

Exoskeleton

Front

A _______________ is a quality or trait.

Back

Characteristics

Front

This protects the animal body and acts as a barrier against harmful materials.

Back

Skin

Front

A structure that receives information about an animal's environment.

Back

Brain

Front

These provide oxygen to the blood and take carbon dioxide from the blood.

Back

Lungs

Front

A rigid support system that includes bones that connect to the soft structures of the body.

Back

Skeleton

Front

The internal organ that pumps blood.

Back

Heart

Front

Organ that are found in fish that extract oxygen from the water as water flows around gills.

Back

Gills