Unit 2 Review - Classification of Vertebrates

Question 1

What is the difference between a vertebrate and an invertebrate?

Answer 1

Vertebrates have a backbone, and invertebrates do not.

Question 2

Name a vertebrate whose body temperature changes with its surroundings.

Answer 2

Fish
Reptile
Amphibian

Question 3

Name one characteristic common to all fish.

Answer 3

Lives in water
Gills
Fins
Backbone
Body temperature that changes with surroundings

Question 4

What are two differences between cartilaginous fish and bony fish?

Answer 4

The skeleton of a cartilaginous fish is made of flexible cartilage.

Bony fish have a bony skeleton and a swim bladder.

Question 5

Which type of fish looks long and eel-like and uses its sucker to attach and feed on other fish?

Answer 5

Jawless

Question 6

Name two characteristics that allow reptiles to live on land and away from water.

Answer 6

Dry and scaly skin that does not need to stay moist
Lungs to breathe air
Eggs that have tough, leathery shells that won’t dry out on land

Question 7

Tell how a tadpole is different from an adult frog

Answer 7

A tadpole breathes through gills instead of lungs and has a tail for swimming instead of legs for hopping

Adult frogs have no tails or gills, but they do have legs and lungs

Question 8

In what two ways do most adult amphibians breathe?

Answer 8

With their lungs and through their moist skin

Question 9

Name two ways frogs and toads are different

Answer 9

• Frogs’ eyes bulge more than toads’ eyes.
• Frogs have smooth, moist skin, and toads have shorter legs.
• Frogs have long muscular legs and toads have shorter legs
• Frogs have webbed feet and toads usually have little or no webbing between their toes
• Frogs have a very distinctive circular membrane that allows a frog to sense sounds as the membrane vibrates back and forth
• Toads have glands behind their eyes that contain poison
• Frogs lay groups of eggs and toads lay long chains of eggs

Question 10

Describe two adaptations that help a bird fly

Answer 10

• Hollow bones
• Powerful chest muscles
• Strong vision
• Strong heart
• air sacs attached to the lungs
• special features of the digestive system, such as the crop and gizzard

Question 11

Describe how the gizzard helps birds digest their food

Answer 11

The gizzard grinds up a bird’s food into smaller pieces for easier digestion

Question 12

Name two ways in which birds are different from reptiles

Answer 12

• birds have wings
• birds lay eggs with a hard shell
• birds have feathers
• birds have a constant internal body temperature

Question 13

Birds keep a constant internal body temperature. If a bird flies into a cold area, will its body temperature change or stay the same?

Answer 13

Stay the same

Question 14

How can a mammal be born?

Answer 14

• can be born and then crawl into a pouch
• can be born live
• can hatch from an egg

Question 15

What do all mammals have in common?

Answer 15

• They have hair at some point in their lives
• They feed their young with milk
• They have a constant internal temperature

Question 16

What type of teeth do mammals use for grinding plants?

Answer 16

molars

Question 17

What types of teeth do mammals have?

Answer 17

• canines
• incisors
• molars

Question 18

What kind of teeth do mammals use for cutting and gnawing?

Answer 18

incisors

Question 19

Is the statement true or false:

Mammals use canine teeth for stabbing and tearing their food

Answer 19

true

Question 20

What effect does moving from a warm area to a cold area have on the internal body temperature of a mammal?

Answer 20

The body temperature stays the same

Question 21

Which groups of vertebrates have an internal body temperature that usually stays the same no matter how the temperature of the surroundings changes?

Answer 21

birds and mammals

Question 22

Which vertebrates have an internal body temperature that changes with the surroundings?

Answer 22

fish, amphibians, and reptiles

Question 23

What type of fish has a soft flexible skeleton?

Answer 23

cartilaginous fish

Question 24

What characteristics make reptiles different from amphibians?

Answer 24

• Reptiles have dry, scaly skin and amphibians usually have smooth, moist skin
• Reptiles lay tough, leathery eggs and amphibians lay soft, jelly-like eggs that must stay moist or else they will dry out
• Reptiles can lay their eggs on land but amphibians must lay their eggs in water
• reptiles cannot breathe through their scaly skin, but amphibians can breathe through their moist, smooth skin
• Reptiles can live on land near and far from water, but amphibians must live in wet or moist environments

Question 25

What are animals with backbones called?

Answer 25

Vertebrates

Question 26

How are amphibian’s eggs?

Answer 26

Soft and jelly-like

Question 27

What do tadpoles use to breathe?

Answer 27

gills

Question 28

What do frogs use to breathe?

Answer 28

lungs and skin

Question 29

True or false:

All mammals have hair or fur during some part of their lives

Answer 29

true

Question 30

What characteristic is unique to birds?

Answer 30

they have feathers

Question 31

I have scales. My skin is dry. I breathe with my lungs. I lay tough, leathery eggs. What vertebrate am I?

Answer 31

reptile

Question 32

Which group of vertebrates breathes through smooth, moist skin?

Answer 32

amphibians

Question 33

What is the function of mammary glands?

Answer 33

to provide milk for young mammals

Question 34

What is the process of development in which a tadpole grows into an adult frog?

Answer 34

metamorphosis