Phyla Porifera and Cnidaria Flashcards
What does type of animal does the Phylum Porifera contain?
sponges?
Are the animals in the Phylum Porifera asymmetrical or symmetrical?
Asymmetrical
Does the Phylum Porifera have segmentation?
no
Type of coelom/body cavity for porifera
Acoelomates
Describe the nervous system of porifera
No Cephalization
Describe the skeleton/movement of porifera
Sessile, Endoskeleton-Spicules
Describe the digestion of porifera
filter feeders / many pores
What are Choanocytes?
flagellated cells that pull food in thru ostia
What is the ostia?
pores
What do amoebocyte cells do?
circulate food around the organism
Describe the excretion of porifera
diffusion; wastes exit thru osculum
Describe the circulation of porifera
None
Describe the respiration of porifera
diffusion-obtain oxygen from water
Describe the reproduction
sexual-Hermaphrodites
asexual- bud; Regenerate body parts
How many germ layers do cnidarias have?
2
Describe the body symmetry/shape of cnidarias
radial
2 body forms of cnidarias
polyp & medusa
Describe the segmentation of cnidarias
none
Describe the nervous system of cnidarias
no cephalization
Describe the skeletal system of cnidarias
nematocyst: stinging cells found on tentacles
Describe the movement of cnidarians
Hydrostatic; sessile or move
Describe the digestive system of cnidarias
one body opening for food & wastes
Describe the extretion system of cnidarias
one body opening for food & wastes
Describe the circulatory system of cnidarias
none
