LAB EXAM 1 Flashcards
(95 cards)
What type of symmetry does Phylum Porifera have?
Asymmetrical (no symmetry)
Example organism in Phylum Porifera
Sponge
central cavity in a sponge
spongocoel
ostia
opening in sponges (phylum Porifera) that allows water into the sponge
Osculum
Phylum Porifera, eliminates water
What are the specialized cells in the spongocoel in sponges?
choanocytes
What are choanocytes?
flagellated cells that line the spongocoel
What are spicules?
skeletal structure of sponges
What is spongin?
collagenous protein (Phylum Porifera)
How does the respiratory system work in Phylum Porifera?
simple diffusion
How do Phylum Porifera collect food?
filter-feeding
Do sponges have tissues?
no
How does the Phylum Porifera reproduce?
sexual- releasing gametes into the surrounding water
asexual- fragmentation
Phylum Cnidaria symmetry
radial
Phylum Cnidaria body cavity
acoelomate
acoelomate
no body cavity
psuedocoelomate
fake body cavity
coelomate
body cavity
Phylum Cnidaria diploblast or triploblast?
Diploblast
nematocysts
specialized stinging cells in Clade Radiata
Two body forms present in Phylum Cnidaria?
- medusa
2. polyp
What is the medusa form in phylum cnidaria?
upside-down cup, mobile
What is the polyp form in phylum cnidaria?
sessile, tubular
Phylum Cnidaria symmetry?
Radial