Reading from the text: Chapter 32
From the unique characteristics of animals listed on page 589, list 6 of them in 3-5 words per characteristic.
1
2
3
4
5
6
From the list of characteristics you have given, define an animal in one sentence.
Describe the difference between the following pairs of terms in one sentence.
Parazoa and metazoan (pg 592)
Bilateral symmetry and Radial symmetry (pg 592)
Acoelomate and pseudocoelomate and coelomate (pg 593)
Protostome and deuterostome (pg 594)
List the four differences between protostomes and deuterostomes:
1
2
3
4
Complete the following table by indicating which each phyla has using the tree on 591 and information from 592-4.
Porifera
Cnidaria
Ctenophore
Platyhelminthes
Nematoda
Arthropoda
Annelid
Mollusca
Echinodermata
chordata
Parazoa or
metazoa
Bilateral or
radial
symmetry
Acoelomate,
pseudocoleo
mate,
coelomate
Protostome vs
deuterostome
Define:
Germ layer
Blastopore
Archenteron
Coelom
Blastocoel
Put the following stages in order for the development of a human: Fetus, zygote, morula, blastula, blastocyst, embryo,
gastrula, neurula
Draw a gastrula stage when the coelom is forming for a deuterostome and a protostome. Label the coelom, three germ
layers and archenteron in the drawing.
What is the significance of and the time period for the Cambrian explosion?
Compare and contrast the two opposing views of what the common ancestor looked like that led to this explosion.
Do the self test questions on page 597 (check answers in the back of the book) and question 1 “Science, Technology, and
Society” on page 598 (write this answer on a separate page)