ch. 9 vocab

Question 0

Adaptations

Answer 0

Structures and behaviors that allow animals to preform their functions.

Question 1

Homeostasis

Answer 1

Keeping internal body conditions stable.

Question 2

Verterbrates

Answer 2

Animals with a backbone.

Question 3

Inverterbrates

Answer 3

Animals without a backbone.

Question 4

Tissue

Answer 4

A group of similar cells that preforms a certain function.

Question 5

Organ

Answer 5

A group of tissues.

Question 6

Radial symmetry

Answer 6

When many imaginary lines can be drawn through a central point to divide it into 2 mirror images.

Question 7

Bilateral symmetry

Answer 7

If only one line of symmetry can be drawn to divide it into halves that are mirror images.

Question 8

Cnidarians

Answer 8

Invertebrate that have stinging cells and take food into a central body cavity.

Question 9

Mollusks

Answer 9

Invertebrates ofte protected by a hard shell.

Question 10

Arthropods

Answer 10

Invertebrates that have a hard covering.

Question 11

Exoskeleton

Answer 11

An outer skeleton.

Question 12

Echinoderm

Answer 12

Invertebrate with an inner skeleton with a system of fluid filled tubes.

Question 13

Endoskeleton

Answer 13

Internal skeleton.

Question 14

Chordates

Answer 14

An animal that has a notochord, nerve chord, and throat pouches at some point in their lives.

Question 15

Notochord

Answer 15

A flexible rod that supports the chordate’s back.

Question 16

Vertebrae

Answer 16

The small stacked bones in the backbone.

Question 17

Ectotherm

Answer 17

An animal that produces little internal body heat.

Question 18

Endotherm

Answer 18

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

Question 19

Fish

Answer 19

A vertebrate that lives in water and uses fins to move.

Question 20

Cartilage

Answer 20

A tissue more flexible than bone.

Question 21

Amphibian

Answer 21

A vertebrate that is ectothermic ad spends its early life in water.

Question 22

Reptile

Answer 22

An ectothermic vertebrate, has scaly skin, and lays eggs on land.

Question 23

Bird

Answer 23

Is an endothermic vertebrate thats lays eggs, has feathers, and a four-chambered heart.

Question 24

Mammals

Answer 24

Are endothermic vertebrates have skin covered with fur or hair, and a four-chambered heart.

Question 25

Mammary glands

Answer 25

The organs that produce milk for the young.

Question 26

Monotremes

Answer 26

Lay eggs.

Question 27

Marsupials

Answer 27

Born at an early stage of development.

Question 28

Placental mammal

Answer 28

Develops inside the mother’s body until its body system ca function independently.

Question 29

Placenta

Answer 29

Materials are exchanged through this organ.