Animal Internal and External Structures

Front

What is the organ in fish and young amphibians that takes in oxygen and water?

Back

Gills are the organs that allow fish and young amphibians to extract oxygen from water.

Front

What organ pumps blood throughout the body?

Back

The heart is the organ responsible for pumping blood.

Front

What is an action that causes a certain reaction in an animal?

Back

A stimulus is an action or event that causes a response in an animal.

Front

Which organ receives information from sense organs and tells the body how to react?

Back

The brain processes information from the senses and coordinates responses.

Front

What is a hard external covering on many invertebrates that maintains their shape and protects their organs?

Back

An exoskeleton is a hard outer structure that provides support and protection for many invertebrates.

Front

What is the function of gills in aquatic animals?

Back

Gills allow aquatic animals to breathe by extracting oxygen from water.

Front

What is the role of the heart in the circulatory system?

Back

The heart pumps blood, supplying oxygen and nutrients to the body and removing waste.

Front

What is a stimulus-response relationship in animals?

Back

It is the process where an animal reacts to a stimulus, such as moving away from danger.

Front

What is the main function of the brain in animals?

Back

The brain processes sensory information and coordinates actions and responses.

Front

What is the difference between an exoskeleton and an endoskeleton?

Back

An exoskeleton is an external hard structure, while an endoskeleton is an internal support structure.