Invertebrates, redux

Question 1

Porifera

Answer 1

Sponges. basal, most distant sister of animals. no true tissues

Question 2

Ctenophora

Answer 2

Eumetozoan. Radial symmetry, diploblastic, fused cilia

Question 3

Cnidarian

Answer 3

Eumetozoan. radial symetry, diploblastic, cnidocysts (stinging cells via injection)

Question 4

Acoela

Answer 4

eumetazoan, bilaterian (basal), triploblastic, acoelomates

Question 5

Platyhelminthes

Answer 5

bilatarians, basal protosome, lophotrocozoan, gastrovascular cavity

Question 6

Rotifera

Answer 6

bilaterian, protosome, lophotrocozoan, pseudocoelumate, alimentary canal

Question 7

Ectoprocta

Answer 7

lophotrocozoan, coelomate, feeds via lophophores

Question 8

Brachiopoda

Answer 8

bilaterian, protostome, coelomate, lophotrocozoan, feeds via lophophores

Question 9

Mollusca

Answer 9

bilaterian, protstome, lophotrocozoan, coelomate, trocophore larvae

Question 10

annelida

Answer 10

lophotrocozoan, coelomate, trocophore larvae

Question 11

coelomate

Answer 11

central body cavity, often used for digestion

Question 12

Nematoda

Answer 12

ecdyzoans, pseudocoelomate, unsegmented, Ecdysis (sheds skin)

Question 13

Arthropoda

Answer 13

ecdyzoans, segmented body, jointed appendages

Question 14

Echinodermata

Answer 14

deuterostomes, pentaradial, vascular

Question 15

Hemichordata

Answer 15

bilateral, deuterostomes, dorsal nerve cord