Xxterwin: Animal Diversity (Mainly Marine)

Front 1

Radial Symmetry

Back 1

Organisms tend to be sessile, passive ‘floaters’, or have limited sensory capabilities.

Front 2

Sponges

Back 2

Phylum Porifera. Mostly marine.
Cells are loosely organized, no true tissues or organs.
Filter food particles using choanocytes.

Front 3

Sponge Reproduction

Back 3

Reproduce sexually (most hermaphrodites); or
Asexually by pieces breaking off (fragmentation).

Front 4

Phylum Cnidaria

Back 4

‘Nerve net’ organisms such as Medusa-jellyfish & Polyp-corals

Front 5

Nematocyst

Back 5

In Cnidocytes, the stinging cell.

Front 6

Cnidarian Classes

Back 6

Class Hydrozoa;
Class Scyphozoa;
Class Anthozoa.

Front 7

Class Hydrozoa

Back 7

Hydras, Obelia
Meduse stage
Portuguese man of war

Front 8

Class Scyphozoa

Back 8

Meduas stage is common.
All marine
Most jellyfish, sea wasps,
Sea nettles.

Front 9

Phylum Ctenophora

Back 9

Comb jellies: all are marine.
8 rows of comb-like fused cilia used for locomotion.
Capture prey with long stick tentacles.
Many are bioluminescent!

Front 10

Phylum Platyhelminthes

Back 10

Flat worms.
Approx 20,000 species.
Fresh, marine, & terrestrial.

Front 11

Phylum Platyhelminthes Anatomy

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Simple digestive & excretory systems.
Nervous system more developed than cnidarians.
Cephalization, with some ability to learn responding to stimuli.

Front 12

Trematodes

Back 12

Live as parasites. Blood flukes.
Most species have complex life cycles.

Front 13

Tapeworms

Back 13

Parasitic, mostly in vertebrates.
Up to 20m long…yummy!

Phylum Platyhelminthes

Front 14

Phylum Nematoda

Back 14

Round worms.
Approx 90,000 known species.
Extremely widespread.

Front 15

Phylum Nematoda Anatomy

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Complete digestive tract.
Longitudinal muscles produce thrashing motion.

Front 16

Trichinella spiralis

Back 16

Disease causing: trichinosis.
Results from eating undercooked pork.
Worm are encysted in the muscle. Bad news.

Front 17

Phylum Mollusca

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Gastropods.
Bivalves.
Cephalopods.

Front 18

Gastropods

Back 18

Snails, sea slugs, Radula

Front 19

Bivalves

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Clams, oysters, scallops.
2 halves of a shell.
Adductor mussels

Front 20

Cephalopods

Back 20

Octopi, squid, nautilus.
Beak & injectable poison in mouth at center of arms & tentacles.

http://www.australiancephalopods.com/