Flashcards

Question 2

These organisms differ from Chordates in terms of embryonic development. They exhibit spiral cleavage.

Answer 2

Protostomes

Question 3

Incomplete digestive system, radial symmetry

Answer 3

Cnidaria

Question 4

This phylum has an asymetrical appearance

Answer 4

Porifera

Question 5

Internal, Limy skeleton

Answer 5

Echinodermata

Question 6

complete digestive system, water-vascular system

Answer 6

Echinodermata

Question 7

The Class Cephalopoda is a part of which Phylum?

Answer 7

Mollusca

Question 8

T/F: All Molluscs have a hard, external shell

Answer 8

False

Question 9

insecta, crustacea, arachnida

Answer 9

Arthropoda

Question 10

T/F: Octopi and squids are considered molluscs, but they have 8 “feet.”

Answer 10

False. Octopi and Squid have multiple tentacles, and one “head-foot.”

Question 11

Gastropods

Answer 11

Mollusca

Question 12

These two phyla both have radial symmetry

Answer 12

Cnidaria, Echinodermata

Question 13

unsegmented, complete digestive system, pseudocoelomate

Answer 13

Nematoda

Question 14

paired, jointed appendages

Answer 14

Arthropoda

Question 15

Sessile feeders

Answer 15

Porifera

Question 16

Earthworms

Answer 16

Annelida

Question 17

nematocysts are a characteristic of this Animal Phylum

Answer 17

Cnidaria

Question 18

roundworms

Answer 18

Nematoda

Question 19

One stage of ths phyla’s life cycle is called a medusa

Answer 19

Cnidaria

Question 20

unsegmented, one muscular foot

Answer 20

Mollusca

Question 21

flatworms

Answer 21

Platyhelminthes

Question 22

no distinguishable germ layers

Answer 22

Porifera

Question 23

Coelomate protosome, segmented body

Answer 23

Annelida

Question 24

T/F: Echinoderms have an internal digestive system.

Answer 24

False.

Question 25

chitin exoskeleton

Answer 25

Arthropoda

Question 26

Chordates and Echinoderms are examples of these coelomate organisms.

Answer 26

Deuterostomes

Question 27

incomplete digestive system, eyespots

Answer 27

Platyhelminthes

Question 28

T/F: All Chordates, Arthropods, and Annelids exhibit bilateral symmetry.

Answer 28

True.

Question 29

Dorsal Nerve Chord

Answer 29

Chordata

Question 30

Has a radula

Answer 30

Mollusca

Question 31

Notochord

Answer 31

Chordata

Question 32

Internal Hydrostatic skeleton

Answer 32

Annelida, Echinodermata

Question 33

"Exoskeleton" composed of calcium carbonate

Answer 33

Molluscs

Question 34

Elephantiasis can be caused by these

Answer 34

Nematodes

Question 35

Platyhelminthes use this. It extends through the mouth.

Answer 35

the Pharynx

Question 36

Which phyla contains hydra-like organisms with a digestive cavity and only one opening that serves as both the mouth and the anus?

Answer 36

  Cnidaria