chapter 9 quiz #1

Question 1

Protostome

Answer 1

-mostly invertebrates
-blastopore becomes the mouth
-during cleavage cells divide in spiral manner (cells on top line up with the spaces between the cells on the bottom)
-mesoderm splits to form ceolom

Question 2

deuterostome

Answer 2

-are vertebrates
-blastopore becomes the anus
-during cleavage they divide in a radially (cells on top stack diectly on top of the cells bellow them)
-mesoderm buds off archenteron to form ceolom

Question 3

ceolum

Answer 3

-is the main body cavity in an animal

Question 4

aceolamates

Answer 4

have no open spaces in animal, it is all tissue

Question 5

ceolamates

Answer 5

have a body cavity entirely lined with mesoderm

Question 6

pseudocoelomates

Answer 6

have a body cavity lined on one side with mesoderm

Question 7

development

Answer 7

gamete > zygote ~cleavage~ >eight-cell stage ~cleavage~ > blastula ~gastrulation~ > gastrula

Question 8

characteristics of anamalia

Answer 8

-eukaryotic
-multicellular
-heterotrophic
-motile at some stage in life
-classified by how they reproduce and develop