Invertebrate

Question 1

Invertebrate

Answer 1

Animals without backbones.

Question 2

Exoskeleton

Answer 2

Hard or tough outer coverings that provide a framework of support.

Question 3

Endoskeleton

Answer 3

Internal skeleton.

Question 4

Vertebrate

Answer 4

Endoskeleton and backbone.

Question 5

Hermaphrodites

Answer 5

Produce eggs and sperm at in the same animal body.

Question 6

Zygote

Answer 6

Sperm penetrates the egg to form a fertilized egg cell.

Question 7

Internal Fertilization

Answer 7

Sperm and egg combine inside the animal’s body.

Question 8

External Fertilization

Answer 8

Egg and sperm combine outside the animal’s body.

Question 9

Radial Symmetry

Answer 9

Can be divided along any plane, through a central axis, into roughly equal halves.

Question 10

Bilateral Symmetry

Answer 10

Means the animal can be divided into mirror image halves only along one plane through the central axis.

Question 11

Coelom

Answer 11

Fluid-filled cavity. Has tissue formed from mesoderm that lines and encloses the organs.

Question 12

Pseudocoelom

Answer 12

Fluid-filled body cavity that develops between mesoderm and the endoderm rather than developing entirely within the mesoderm as in colemates.

Question 13

Acoelomates

Answer 13

Animals that do not have a coelom.

Question 14

Protostomes

Answer 14

Mouth develops from the first opening in the gastrula. (mouth)

Question 15

Deuterostomes

Answer 15

The anus develops from the first opening in the gastrula. (butt)

Question 16

Sessile

Answer 16

Attached to and stay in one place.

Question 17

Cnidocytes

Answer 17

Contain nematocysts.

Question 18

Ganglion

Answer 18

Group of nerve cell bodies that coordinates incoming and outgoing nerve signals.

Question 19

Regeneration

Answer 19

Process in which body parts that are missing due to damage or predation can be regrown.

Question 20

Hydrostatic skeletion

Answer 20

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

Question 21

Trichinosis

Answer 21

Contracted by eating raw or undercooked pork and pork products, or wild game infected with the larvae of Trichinella.

Question 22

Open circulatory system

Answer 22

Which the blood is pumped out of vessels into open spaces surrounding the body organs.

Question 23

Close circulatory System

Answer 23

Blood is confined to vessels as it moves through the body

Question 24

Crop

Answer 24

Where food is stored until it is passed 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

Thickened band of segments

Question 27

Thorax

Answer 27

Middle body region, consisting of three fused main segments to which in many arthropods the legs and wings are attached.

Question 28

Abdomen

Answer 28

Contains fused segments and is at the posterior end of the arthropod bears additional legs and contains digestive structures and the reproductive organs.

Question 29

Cephalothorax

Answer 29

Thorax region fused with the head into a single structure.

Question 30

Molting

Answer 30

Shedding the exoskeleton.

Question 31

Mandibles

Answer 31

Mouthparts of most arthropods including a pair of appendages.

Question 32

Tracheal tubes

Answer 32

Most terrestrial arthropods have this system of branching tubes.

Question 33

Book Lungs

Answer 33

Saclike pockets with highly folded walls for respiration.

Question 34

Malpighiam Tubules

Answer 34

Cellular waste removed from the blood through these tubes. These tubules also help terrestrial arthropods preserve water in their bodies to maintain homeostatic water balance.

Question 35

Spiracles

Answer 35

Both tracheae and book lungs open to the outside of the body of the arthropod in these openings.