Ch 3. Exploring the World of Vertebrates

Question 1

Name two ways that animals are different from most plants.

Answer 1

1. Animals usually move around; plants stay in one place.
2. Animals find their food; most plants make their own food.

Question 2

Into what two groups are animals divided or classified?

Answer 2

Vertebrates and invertebrates.

Question 3

What do we call animals with back bones?

Answer 3

Vertebrates

Question 4

What do we call animals without backbones?

Answer 4

Invertebrates

Question 5

What do we call the bones that make up the framework of a body?

Answer 5

The skeleton.

Question 6

Name the five groups of vertebrates.

Answer 6

mammals

fish

amphibians

reptiles

birds

Question 7

List five ways mammals are alike.

Answer 7

1. They make milk for their babies
2. They have at least some hair
3. No mammal has more than four limbs (legs, arms, wings)
4. All mammals are warm-blooded
5. All mammals have lungs and breath air

Question 8

What does it mean if an animal is warm-blooded?

Answer 8

It means their body temperature stays just about the same no matter what the outside temperature is.

Question 9

In what three ways are all fish alike?

Answer 9

1. They have gills to help them breath in water.
2. They have fins.
3. They are cold-blooded.

Question 10

What does it mean if an animal is cold-blooded?

Answer 10

It means their body temperature changes when the temperature around them changes.

Question 11

In what four ways are all amphibians alike?

Answer 11

1. All amphibians breathe with gills in water when they are born, and some breathe with lungs on land later.
2. All amphibians have smooth, moist skin.
3. All amphibians lay eggs.
4. All amphibians are cold-blooded.

Question 12

What does amphibian mean?

Answer 12

It means “living a double life.” Amphibians spend time both in the water and on land.

Question 13

Name some amphibians.

Answer 13

frogs, toads, and salamanders

Question 14

In what three ways are all reptiles alike?

Answer 14

1. All reptiles breath with lungs.
2. All reptiles are covered with dry scales.
3. All reptiles are cold-blooded.

Question 15

Name some reptiles.

Answer 15

snakes, lizards, turtles, crocodiles, and alligators

Question 16

How are snake eggs different from bird eggs?

Answer 16

Snake eggs look like leather and feel like rubber. They can also easily soak up water.

Question 17

How do snakes “hear”?

Answer 17

Snakes “hear” by feeling vibrations through solids like the ground.

Question 18

How do snakes smell?

Answer 18

Snakes smell with their tongue.

Question 19

What happens to a snake’s skin as it grows?

Answer 19

The skin becomes too small for it, so it sheds the skin.

Question 20

In what five ways are birds alike?

Answer 20

1. All birds have feathers.
2. All birds have wings.
3. All birds have two legs.
4. All birds breathe with lungs.
5. All birds have bills or beaks.

Question 21

Birds are the only animals that have…

Answer 21

feathers