Animal Unit Test

Question 1

Phylum Nematoda

Answer 1

(Round Worms)
Bilateral
Pseudocoelomate
Complete digestive system
Ecdysis

Question 2

Ecdysis

Answer 2

Molting exoskeleton

Question 3

Pseudocoelomate

Answer 3

Fake Body cavity

Question 4

Phylum Mollusca

Answer 4

(Snails, Clams, Squids)
Soft-bodied with a hard shell
Bilateral symmetry
Complete digestive system
Very large

Question 5

Mollusks

Answer 5

Breath through the mantle

Question 6

Cephalopods

Answer 6

Squid’s
-Chromatophores color changing

Question 7

Phylum Arthropoda

Answer 7

(Insects, Spiders, Crustaceans)
Exoskeleton composed of chitin
Segmented body (head, thorax, abdomen)
Jointed Appendages (arms, legs)

Question 8

Phylum Echinodermata

Answer 8

(Starfish, sea urchins)
Radial symmetry
Endoskeleton made of calcareous plates

Question 9

Water vascular system

Answer 9

Fluid filled tubes that help feed, move, breath within the star fish

Question 10

Phylum Chordata

Answer 10

(Fish, Amphibians, Reptiles, birds, mammals)
Bilateral
Notochord (skeletal support)
Dorsal hollow nerve cord (central nervous system)
Pharyngeal slits (gills-filters)
Post-anal tail (having tail lost as chordate develops)

Question 11

Chordates

Answer 11

Things with vertebrate

Question 12

Gastropoda

Answer 12

Snails

Question 13

Bivalves

Answer 13

2 shells that hinge
Clams/shells

Question 14

Ectoderm

Answer 14

Outer most layer

Question 15

Mesoderm

Answer 15

Middle layer

Question 16

Endoderm

Answer 16

Inner most layer

Question 17

Direct development

Answer 17

Offspring resemble miniatures of adults
Ex: humans

Question 18

Metamorphosis

Answer 18

Drastic change in form from juvenile to adult
Ex: butterflies

Question 19

Phylum Porifera

Answer 19

(Sponges)
Diploblastic
Asymmetrical
Filter feeders (obtain food by filtering water)
Ex. Simple, complex, most complex

Question 20

Ostia (sponges

Answer 20

Water goes in through this

Question 21

Osculum sponges

Answer 21

Water exits through this

Question 22

Diploblatic

Answer 22

Endoderm + Ectoderm

Question 23

Phylum Cnidaria

Answer 23

(Jellyfish, corals, sea anemones)
Radial symmetry
Diploblastic
Body types:
Poly and Medusa

Question 24

Polyp

Answer 24

Sessile (still)

Question 25

Medusa

Answer 25

Free swimming (mobile)

Question 26

Phylum Platyhelminthes

Answer 26

(Flatworms)
Bilateral symmetry
Triploblastic
Acoelomate
Eye spots (light detecting)

Question 27

Importance of bilateral symmetry

Answer 27

Move in a forward direction

Question 28

Acoelomate

Answer 28

No true body cavity
Coelomate (true body cavity: space in body for organs)