kingdom animalia

Question 1

radial symmetry

Answer 1

can be divided along any plane, through a central axis into equal halves

Question 2

bilateral symmetry

Answer 2

divided down its length into similar l & r halves forming mirror images

Question 3

diploblasty

Answer 3

2 primary germ layers

Question 4

triploblasty

Answer 4

3 primary germ layers

Question 5

acoelomates

Answer 5

3 cell layers
digestive tube
no body cavity

Question 6

pseudocoelamate

Answer 6

not a true body cavity - only partially lined with mesoderm

Question 7

coelomate

Answer 7

body cavity completely surrounded by mesoderm

Question 8

protostome development
- cleavage
-coelom formation
- fate of blastopore

Answer 8

• spiral and determinate
• masses of mesoderm split and form coelom
• mouth develops

Question 9

deutorostome
-cleavage
-coelom
-fate

Answer 9

• radial and indeterminate
  -folds of archenteron form coelom
  -anus delevops from blastopore

Question 10

spiral cleavage

Answer 10

planes of cell division diagonal to vertical axis of embryo

Question 11

radial cleavage

Answer 11

planes parallel/perpendicular to vertical axis of embryo

Question 12

protostome coelom formation is…

Answer 12

schizocoelous

Question 13

deuterostome coelom formation is…

Answer 13

enterocoelous

Question 14

cephalisation

Answer 14

sensory organs and apendages have become located in the anterior end of animals