invertebrate

Question 1

Invertebrate

Answer 1

animals without backbones

Question 2

Exoskeleton

Answer 2

hard outer coverings that provide framework of support

Question 3

Endoskeleton

Answer 3

internal skeletons

Question 4

Vertebrate

Answer 4

has an endoskeleton and a backbone

Question 5

Hermaphrodite

Answer 5

produces both sperm and eggs cells in the same animal body

Question 6

Internal fertilization

Answer 6

occurs when sperm and egg cell combine inside the animal’s body

Question 7

External fertilization

Answer 7

occurs when sperm and egg cells combine outside the animal’s body

Question 8

Radial symmetry

Answer 8

can be divided along any plane through a central axis into roughly equal halves

Question 9

Bilateral symmetry

Answer 9

can be divided into mirror image halves only along one plane through a central axis

Question 10

Cephalization

Answer 10

the tendency to concentrate nervous tissue and sensory organs at the anterior end of the animal

Question 11

Coelom

Answer 11

fluid-filled body cavity that lines and encloses the organs

Question 12

Pseudocoelom

Answer 12

body cavity lined partially with mesoderm

Question 13

Acoelomate

Answer 13

animals that dont have a coelom

Question 14

Protostome

Answer 14

the mouth develops first

Question 15

Deuterostome

Answer 15

the anus develops first

Question 16

Sessile

Answer 16

animals that are attached and stay in one place

Question 17

Cnidocytes

Answer 17

nematocyst- containing stinging cells on a cnidarian’s tentacle

Question 18

Ganglion

Answer 18

a group of nerve cell bodies that coordinates incoming and outgoing nerve signals

Question 19

Regeneration

Answer 19

a process which body parts that are missing can be regrown

Question 20

Hydrostatic skeleton

Answer 20

fluid within a closed space that provides rigid support for muscles to work against

Question 21

Trichinosis

Answer 21

disease caused by eating raw or under cooked meat, usually pork, infected with trichinosis larvae

Question 22

Open circulatory system

Answer 22

the blood is pumped out of vessels into open spaces surrounding the bod organs

Question 23

Closed circulatory system

Answer 23

blood is confined to vessels as it moves through the body

Question 24

Crop

Answer 24

sac in which food and soil are stored until they pass to the gizzard

Question 25

Gizzard

Answer 25

muscular sac containing hard particles that help grind soil and food before they pass into the intestine

Question 26

Clitellum

Answer 26

a thickened band of segments

Question 27

Thorax

Answer 27

middle body region

Question 28

Abdomen

Answer 28

contains fused segments at the posterior end, bear additional legs, digestive structure, and reproductive organs

Question 29

Cephalothorax

Answer 29

structure formed from the thorax fused with the head

Question 30

Molting

Answer 30

process of shedding the exoskeleton

Question 31

Mandibles

Answer 31

a pair of appendages adapted for biting and chewing

Question 32

Tracheal tubes

Answer 32

carries oxygen throughout the body

Question 33

Book lungs

Answer 33

sac like pockets with highly folded walls for respiration

Question 34

Spiracles

Answer 34

opening in the arthropod body through which air enters and waste gas leaves

Question 35

Malpigian tubules

Answer 35

the wast-excreting structure that also helps maintain homeostatic water balance