Set 12

Question 1

placement of sense organs and a nerve center/brain in the anterior or “head” position (vs. a nerve nett

Answer 1

cephalization

Question 2

Caphalization leads to the AP Axis which leads to

Answer 2

bilateral symmetry

Question 3

what is also needed with directed forward movement

Answer 3

musculature and nerve coordination

Question 4

mesoderm completely fills the embryonic blastocoel. NO coelom in an adult. Gut is the only internal cavity

Answer 4

Acoelomate

Question 5

Mesoderm only lines the outer edge of the blastocoel so the blastocoel persist sin an adult as a pseudocoelom

Answer 5

pseudocoelomate

Question 6

A body cavity forms within the mesoderm

Answer 6

Eucoelomate

Question 7

spongy mesodermal tissue that fills the blastocoel, providing hydrostatic support

Answer 7

parenchyma

Question 8

characteristics of phatyhelminthes

Answer 8

triploblastic, bilateral, coelomate, protostome, and lochotrochozoan

Question 9

flame cells and tube cells that collect excess fluid and carry it to excretory pores in the outer epipdermis to exit for osmoregulation

Answer 9

protonephridia

Question 10

Classes in platyheminthes

Answer 10

Turbellaria (planaria), trematoda (endoparasitic), cestoda (tapeworms)