Invertebrates Flashcards
(11 cards)
1
Q
Invertebrates Definition
A
Animals without a backbone
ex.
2
Q
Phylum Porifera - Sponges
A
- sack like bodies perforated by may pores
- Beating flagella produces water currents that flow through pores into central cavity and out osculum
3
Q
Asconoid Sponge
A
small
tube shaped
flagellated spongocoel
4
Q
Syconoid
A
tubular body
flagellated canals
5
Q
Leuconoid
A
most complex sponge
largest colonial masses
flagellated chambers
6
Q
Phylum Cnidaria
A
- Tubular animals reside in shallow marine waters
- Polyp and medusa body forms
- Two layered body sac
Outer layer - protective epidermis - Neve net found throughout body
7
Q
Cnidarian Diversity - Scyphozoa
A
Jellyfish
- Manubrium with oral lobes
- stomach with pouches
Sense organs = rhopalium (statocyst + ocelli)
- Seperate sexes
8
Q
Cnidarian diversity - hydrozoa
A
- marine and freshwater
- a colony of polyps enclosed by a hard chitinous covering
- feeding polyps
- reproductive polyps
- sexual reproduction
9
Q
Cnidarian diversity - Anthozoa
A
- flower animals
- polyo; no medusa
- sea anemones, hard corals, sea fans
- large gastrovascular cavity
- attachment by pedal disk
10
Q
Disturbances to coral
A
- bleaching: loss of zooxanthellae
other: disease, sedimentation, pollutants, exposure, predation, physical contact, temp., climate change, ocean acidification
11
Q
Ctenophora - Comb Jellies
A
- all marine
- Lack Hox gene
- 2 long tentacles
- fragile transparent body
- apical sense organ
- bioluminescence
