Chapter 11 study guide

Question 1

an organisms structure

Answer 1

anatomy

Question 2

.the study of functions in organisms

Answer 2

physiology

Question 3

one line of symmetry

Answer 3

bilateral symmetry

Question 4

multiple lines of symmetry

Answer 4

radial symmetry

Question 5

animals with backbones

Answer 5

vertebrate

Question 6

animals without backbones

Answer 6

invertebrate

Question 7

a group of animal classifaction

Answer 7

phylum

Question 8

an immature form of an animal

Answer 8

larva

Question 9

invertebrates that have stinging cells and take their food into a central body cavity

Answer 9

cnidarian

Question 10

the vase-shaped body plan

Answer 10

polyp

Question 11

the bowl-shaped body plan

Answer 11

medusa

Question 12

a knot of nerve tissue located in the head end

Answer 12

brain

Question 13

an organism that lives inside or on another organism

Answer 13

parasite

Question 14

the organism in or on which a parasite lives

Answer 14

host

Question 15

an opening in which waste exits

Answer 15

anus

Question 16

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

Answer 16

mollusk

Question 17

a system in which the blood isn’t always inside blood vessals

Answer 17

open circulatory system

Question 18

a system in which blood moves only within a connected network of those tubes called blood vessals

Answer 18

closed circulatory system

Question 19

organs that remove oxygen from the water

Answer 19

gills

Question 20

include snails and slugs

Answer 20

gastropod

Question 21

a flexible organ with tiny teeth

Answer 21

radula

Question 22

mollusks that have two shells held together by hinges and strong muscles

Answer 22

bilave

Question 23

.an ocean-dwelling mollusk whose foot forms tentacles around its mouth

Answer 23

cephalopod

Question 24

members of the arthropod phylum

Answer 24

arthropod

Question 25

outer skeleton

Answer 25

exoskeleton

Question 26

the process of shedding an outgrown exoskeleton

Answer 26

molting

Question 27

an appendage attached to the head that contains sense organs

Answer 27

antenna

Question 28

an arthropod that has 2 or three body sections, five or more pairs of legs, and 2 pairs of antennae

Answer 28

crustacean

Question 29

arthropods that have 2 body sections, 4 pairs of legs, and no antennae

Answer 29

arachnid

Question 30

the hind section

Answer 30

abdomen

Question 31

a process in which an animals body undergoes dramatic changes in form during its lifetime

Answer 31

metamorphosis

Question 32

the most common of all arthropods with 3 body sections, 6 legs, one pair of antennae, and usually 1 or 2 pairs of wings

Answer 32

insect

Question 33

an insects midsection in which the legs and wings are attached

Answer 33

throax

Question 34

what a larva becomes

Answer 34

pupa

Question 35

a stage which usually looks like the adult insect without legs

Answer 35

nymph

Question 36

invertebrates which an internal skeleton and a system of fluid-filled tubes called a water-vascular system

Answer 36

echinoderm

Question 37

an internal skeleton

Answer 37

endoskeleton

Question 38

the internal organ system of fluid-filled tubes in echinoderms

Answer 38

water vascular system

Question 39

portions of the tubes in the water vascular system can contract, or squeeze together, forcing water into these structures.

Answer 39

tube feet

Question 40

has 4 different stages: egg, larva, pupa, and adult

Answer 40

complete metamorphosis

Question 41

has no distinct larval stage

Answer 41

gradual metamorphosis