Introduction to Animals

Which of the following is a cephalopod?

• snail
• slug
• oyster
• octopus

What is an invertebrate?

• An animal with a backbone
• a mammal
• An animal without a backbone
• birds

This picture is an example of which group of invertebrates?

• Segmented worms
• Fish
• Sponges
• Arthropods

The organism in the picture is a(n)

• echinoderm
• mollusk
• arthropod
• cnidarian

Arthropods have an outer covering called a(n)_________

• endoskeleton
• bones
• exoskeleton
• armor

Between 90-95% of all animals on earth can be classified as _____.

• invertebrates
• vertebrates
• reptiles
• mammals

All animals obtain ___________ and ___________ for energy.

• food; oxygen
• carbon dioxide; water
• carbon dioxide; nitrogen
• nitrogen; oxygen

All animals have the ability to _________ and _____________. 

• hibernate; migrate
• eat; reproduce
• move; lay eggs
• make their own food; use food for energy

A common characteristic of endothermic animals is

• exoskeleton

• endoskeleton

• regulates own body temperature

• beaks

Which type of mammal has a pouch for their young to fully develop?

• Monotremes
• Placental
• Marsupials
• Mammial mammals