simple animals Flashcards
1
Q
traits of class porifera
A
- all aquatic
- sessile
- asymmetrical
- no mouth, digestive cavity, muscles, or nervous system
-  hermaphroditic and can reproduce sexually and asexually
2
Q
traits and examples of class cnidaria
A
- radially symmetrical bodies
- cells organized into tissues
- outer layer called the ectoderm
- inner layer called the endoderm
- jelly like layer called the mesoglea
ex: hydrozoa, jellyfish, sea anemones, coral
3
Q
life stages for SOME animals from phylum cnidaria
A
polyp: Looks like a cylinder and sits on underwater service with its tentacles extended into the water. Asexual reproduction
medusa: floats like a bell with his mouth and tentacles facing down. Produces eggs and sperm
4
Q
traits for phylum platyhelminthes
A
- bilateral symetry
- flat body allows for gas exchange to occur easily
- mouth opens into dead end sac called gastrovascular cavity
- undigested waste leaves through mouth
5
Q
traits of phylum nematoda
A
- scavengers. in soil and bottom of lakes, some live as parasites
- have digestive system
- mouth and anus
- no circulatory or respiratory system
6
Q
traits of phylum annelids
A
- are segmented
- live in aquatic and terrestrial environment
7
Q
development of coelom in the worms
A
flatworm - acoelomate
roundworm - pseudocoelomate
annelid - coelomate
8
Q
names of the phylum’s considered to be simple animals
A
phylum proifera, phylum cnidaria
9
Q
names of the phylum’s considered worm-like
A
platyheleminthes, nematoda, annelids
10
Q
types of platyhelminthes
A
planarian
fluke
tapeworm
