metazoa/polifera

Question 1

metazoa

Answer 1

• multicellular
• heterotrophic organisms

Question 2

eumetazoa

Answer 2

have true tissues (stable association of cells that have a similar structure and function)

Question 3

parazoa

Answer 3

lacks true tissue

Question 4

eumatazoa groups

Answer 4

cnidaria
ctenophora
bilateria

Question 5

cnidaria - symmetry

Answer 5

have radial symmetry

Question 6

ctenophora - symmetry

Answer 6

biradial (rotational) symmetry

Question 7

bilateria - symmetry

Answer 7

bilateral symmetry

Question 8

parazoa - phylum porifera

Answer 8

sponges
earliest animal lineage
asymmetrical and lack true tissues
specialized cells/multicellular

Question 9

amoebocytes

Answer 9

digest food, grow, and rep

sponge

Question 10

spongocoel

Answer 10

central cavity surrounded by body wall

Question 11

choanocytes

Answer 11

use flagella to create a current. it pulls water into chambers that trap food particles

Question 12

osculum

Answer 12

large opening on the top of the sponge
where the filtered water exists the sponge

Question 13

spicules

Answer 13

provides skeletal support and protection for the sponge

Question 14

ostia

Answer 14

pores

sponge