Animal Circulation and Respiration

_______ is the process of taking oxygen into the body and releasing carbon dioxide back into the environment.

• cellular respiration

• breathing

• diffusion

• respiratory system

Why do animals need oxygen?

• To get food for their bodies

• To burn food for energy

• To get rid of carbon dioxide

• To protect themselves from predators

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Which animal can breathe through their skin?

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Lungs are to horses as ...

• ... wings are to birds

• ... teeth are to rabbits

• ... mouths are to grasshoppers

• ... gills are to fish

Which shows the correct path oxygen flows through our body?

• mouth → blood → cells → lungs

• mouth → lungs → blood → cells

• cells → blood → lungs → mouth

• blood → cells → mouth → lungs

How does oxygen move from the lungs into the blood?

• Through the process of cellular respiration

• Through the process of diffusion

• By magical powers

• It doesn't

Which is NOT a respiratory structure found in animals?

• Lungs

• Gills

• Skin

• Fur

How do axolotls obtain oxygen?

• Their gills absorb it from the water.

• They take it in when they breathe the air.

• Their eyes absorb it from the water.

• Axolotls do not need oxygen.

Animals that live in the water usually have gills, however, some have lungs and can hold their breath for a long time. SELECT ALL examples of water animals that have lungs.

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TRUE or FALSE?

Turtles can breathe through their butts?

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