Ch. 32 Flashcards
(59 cards)
Animal Characteristics (8)
1) Multicellular
2) Heterotroph
3) Lack of cell wall
4) Have nerves, muscles, ability to move
5) Sexual reproduction
6) Sensory structures
7) Nervous system
8) Extracellular matrix, unique cell junction
Five main morphological and developmental features
1) Presence or absence of different tissue types
2) Type of body symmetry
3) Number of germ layers
4) Presence or absence of true body cavity
5) Patterns of embryonic development
Para
Along side
Zoa
Animals
Metazoa
All animals
Metazoa is divided into ______
Parazoa: No specialized tissues or organs
Eumetazoa: More than one type of tissue or organs
Porifera
Sponges; bearing pores
meta
Change; altered; after or along with
para
along side
eu
true
3 types of symmetry
- Asymmetry
- Radial symmetry(like flowers)
- Bilateral symmetry
What type of symmetry are Eumetazoa?
Radiata (radial) or Bilateria (bilaterally)
What do bilateral animals have?
Cephalization, dorsal, and ventral ends
What are the germ layers for Bilateral animals?
1) Ectoderm
2) Mesoderm
3) Endoderm
are triploblastic
What do Radial animals have?
Oral and aboral sides
What are the germ layers for radial animals?
diploblastic:
1) Ectoderm
2) Endoderm
Cephal
head
lateral
side to side
bi
two
ab
away
germ
give rise
How many germ layers do bilateria have?
triploblastic- 3 layers
How many germ layers do radiata have?
diploblastic- 2 layers
When do cell layers develop
during gastrulation
