Introduction To Marine Animals

Front 1

protostomes

Back 1

-Great: pro=the first; stoma= stoma
-the mouth forms first, followed by the anus
-Found in echinoderms and chordates

Front 2

Deuterostomes

Back 2

-deutero: the seconds ; stoma : mouth
-The anus forms and then the mouth
Found in arthropods, annelids, and molluscs

Front 3

Body Symmetry

Back 3

Animals show different patterns of body symmetry there are three main groups of symmetry:
1. Asymmetry
2. Radical symmetry
3. Bilateral symmetry

Front 4

Assymetry

Back 4

-shows no particular pattern of symmetry
-THere is no line of bisection that exists that could divide the organisms into similar looking halves or parts
-Example: Phyllum Porifera, the sponges

Front 5

Radial Symmetry

Back 5

-There is more than one hypothetical bisection that can be visualized --> it can be cu into several equal slices like a pie
-examples: cnidarians and echinoderms

Front 6

Bilateral Symmetry

Back 6

-only one hypothetical bisection can be visualized
-the lines can bisect the organisms into two somewhat equal halves.
-Examples: most of the phyla

Front 7

Coelom

Back 7

the gut
in greek means hollow