Lab 1 Activity Sheet Flashcards
1
Q
Phylum porifera symmetry
A
asymmetrical
2
Q
Phylum porifera tissue organization
A
none
3
Q
Phylum porifera mode of feeding
A
filter feeder
4
Q
Phylum porifera mode of reproduction
A
sexual and asexual
5
Q
Environment on earth when sponges first appeared
A
lifeless other than single celled life forms. hot and lots of carbon in atmosphere. O2 starting
6
Q
Phylum Cnidaria unicellular protists or multicellular?
A
multicellular metazoans
7
Q
Phylum Cnidaria parazoans or eumetazoans
A
eumetazoans
8
Q
Phylum Cnidaria what tissue layers are present
A
epidermis and gastrodermis
9
Q
Phylum Cnidaria digestive system
A
bidirectional
10
Q
when would sexual reproduction be favoured over asexual
A
when conditions are no longer optimal
11
Q
Coral reefs
A
zooxanthellae algae in symbiosis with corals and polyps
