Amphibians and Life Cycles

How does the life cycle of an amphibian compare to the life cycle of a butterfly?

How would the life of an amphibian be different if they did not go through metamorphosis? Choose the best explanation.

• They would stay like tadpoles with gills, not grow legs or lungs, and would live only in water.

• They would hatch as adult frogs and immediately fly to new places.

• They would become warm-blooded and grow fur to stay warm on land.

• They would build hard-shelled eggs and live their whole lives in trees.

True or False: Amphibians only live on land.

• True

• False

Describe at least four characteristics that define an amphibian. Select all that apply.

(a)   (b)   (c)   (d)  

• They have a backbone.
• They are cold-blooded.
• They have permeable skin.
• They undergo metamorphosis.
• They lay hard-shelled eggs on land.

• They are warm blooded
• They have no backbone
• They have rough dry skin

The word amphibian means which of the following?

• Living on land and underground

• Living in ponds and lakes

• Living on land and clouds

• Living on land and in water

Which of the following traits do amphibians share?

• Gills, scales, and warm-blooded

• Backbone, cold-blooded, and metamorphosis

• Scales, warm-blooded, and permeable skin

• Permeable skin, hard-shelled eggs, and living in the air

Amphibians and ________ are examples of animals that go through metamorphosis.

• Mammals

• Birds

• Insects

• Reptiles

Select all characteristics that define an amphibian.

(a)   (b)   (c)   (d)  

• Cold-blooded vertebrate
• Lives both on land and in water
• Goes through metamorphosis
• Lays eggs in water
• Has feathers and wings

• Warm blooded
• Thick dry skin
• Give live birth
• Only live in water

Which statement best describes amphibians?

• A cold-blooded vertebrate animal that lives underwater and has gills and fins.

• A warm-blooded feathered animal that has wings and flies.

• A cold blooded vertebrate animal that goes through changes.

• A warm blooded animal that lays eggs.