phylum coelentrata Flashcards
(cnidaria)
1
Q
give their general characteristics
A
aquatic, mostly marine, sessile or free-living, are radially symmetrical, tissue level, diploblastic
2
Q
their name is derived from
A
cnidocytes [ ie the stinging capsule/ nematocysts]
3
Q
the singular opening mouth is called?
A
hypostome
4
Q
which cnidarian consists of calcium carbonate in their skeleton
A
corals
5
Q
two basic body forms of coelentrata
A
medusa [umbrella-shaped, free living] eg aurelia
polyp [cylindrical, sessile] eg hydra,adamsia
6
Q
who shows metagenesis
A
obelia and physalia
7
Q
how do they show metagenesis?
A
sexually medusa form polyp, and polyp again asexually form medusa
8
Q
give examples of this phyla
A
Physalia [ Portuguese man of war], adamsia [sea anemone]
pennatula [sea pen], gorgonia [sea fan], meandrina [ brain coral]
