Chapter 4 - Animals

Question 1

Homeostasis

Answer 1

Keeping internal body conditions stable

Question 2

Adaptions

Answer 2

Structures and behaviors that allow animals to perform their functions

Question 3

Vertebrates

Answer 3

Animals with a backbone

Question 4

Invertebrate

Answer 4

Animals without a backbone

Question 5

Cnidarian

Answer 5

Invertebrates that have stinging cells and take food into central body cavity

Question 6

Mollusk

Answer 6

Invertebrates with soft, unsegmented bodies that are often protected by a hard shell

Question 7

Arthropods

Answer 7

Invertebrates that have outer coverings, segmented bodies and pairs of jointed appendages

Question 8

Exoskeleton

Answer 8

Outer skeleton

Question 9

Echinoderm

Answer 9

An invertebrate that has an internal skeleton and a system of fluid-filled tubes

Question 10

Endoskeleton

Answer 10

Internal skeleton

Question 11

Chordates

Answer 11

Have a notochord, a nerve chord, pouches in the throat area and a backbone

Question 12

Notochord

Answer 12

A flexible rod that supports a chordates back

Question 13

Vertebrae

Answer 13

What the backbone is made up of

Question 14

Ectotherm

Answer 14

An animal that produces little body heat

Question 15

Endotherm

Answer 15

An animal that controls the internal heat it produces and regulates its own termperature

Question 16

Fish

Answer 16

A vertebrate that lives in water and uses fins to move

Question 17

Cartilage

Answer 17

A tissue more flexible than the bone

Question 18

Amphibian

Answer 18

A vertebrate that is ectothermic and spends its early life in water and its adult life in land

Question 19

Reptile

Answer 19

An ectothermic vertebrate that has scaly skin and lungs and lays eggs on land

Question 20

Bird

Answer 20

An endothermic vertebrate that lays eggs and has feathers and a four-chambered heart

Question 21

Mammals

Answer 21

Endothermic vertebrates that have skin covered with fur and hair, and a four-chambered heart

Question 22

Mammary glands

Answer 22

Organs that produce milk

Question 23

Monotremes

Answer 23

Lay eggs

Question 24

Marsupial

Answer 24

Born at an early stage of development, and usually continue to develop in a pouch on the mothers body

Question 25

Placental mammal

Answer 25

Develops inside its mothers body until its body systems can function independently

Question 26

Placenta

Answer 26

An organ where materials are exchanged between the mother and the embryo