Chapter 23 invertabrates

Question 1

coelmates

Answer 1

Body design: Repositions the body’s fluid, Allows complex tissues/organs to develop, Allows for a larger body size

Question 2

Mollusks classes

4

Answer 2

Chitons (polyplacophora), Snails & Slugs (Gastropoda), Calms & others (Bivalvia), Octopus & Squids (Cephalopoda)

Question 3

Mollusk characterisics

7

Answer 3

Bilaterally symmetrical, visceral mass, muscular foot, Mantle, shell, radula, open circulatory system

Question 4

Annelida classes

2

Answer 4

Marine worms(Polychaeta), Earthworms and leaches(Oligochaeta)

Question 5

Annelida characteristics

3

Answer 5

segmentation, divided by repeating septa, setae(chitin bristles)

Question 6

Arthropoda classes

6

Answer 6

Arachnids(prosoma,opisthosoma), Spiders (Araneae), Mites & ticks (Acari), Centipedes (chilopoda), Milipedes (Diplopoda), crustaceans

Question 7

Arthropoda characteristics

6

Answer 7

jointed appendages, exoskeleton, open circulatory system, compound eyes, spiracles, ecdysis=molting,

Question 8

Echinoderms classes

3

Answer 8

Sea stars & Sea daisies (Asterodiea), Sea lilies & Feather stars (Crinoidea), Sea urshins & Sand dollars (Echinoidea)

Question 9

Echinoderms characteristics

4

Answer 9

deuterostome development, endoskeleton, pentaradial symmetry, tube feet

Question 10

Recognize relationships among the
aforementioned groups.

Answer 10

(see tree in slides)