Slide 1

6
Radiate Animals


Slide 2

Kingdom Animalia(Metazoa)
1.
2.
3.

Mesozoa
Parazoa
Eumetazoa


Slide 3

Radiate Animals
1.
2.
3.

Phylum Cnidaria
Phylum Ctenophora
Coelenterata


Slide 4

Radiate Animals
1.
2.
3.

4.
5.
6.
7.
8.

Epidermis
Gastrodermis
Mesoglea
Gastrovascular Cavity
Extracelluar Digestion
Tentacles
Statocyst
Ocelli


Slide 5

Phylum Cnidaria
1.
2.
3.

4.
5.

Cnidocyte
Nematocyst
Operculum
Cnidocil
Barb


Slide 6

Cnidocyte


Slide 7

Several types of Nematocysts


Slide 8

Dimorphism & Polymorphism
1.
2.
3.

4.
5.
6.
7.
8.

Polyp
Hydroid form
Medusa
Jellyfish form
Tetramerous Symmetry
Gastrozoid
Gonozoid
Dactylozoid


Slide 9

Comparison between polyp and medusa


Slide 10

Polymorphism


Slide 11

Polymorphism


Slide 12

Cnidaria Classification
1.
2.

3.
4.

Class Hydrozoa
Class Scyphozoa
Class Cubozoa
Class Anthozoa


Slide 13

Epidermis
1.
2.
3.

4.
5.
6.

Epitheliomuscular cells
Interstitial cells
Gland cells
Sensory cells
Nerve cells
Cnidocytes


Slide 14

Epitheliomuscular and nerve cells in hydra


Slide 15

Gastrodermis
1.
2.
3.

Nutritive-muscular cells
Interstitial cells
Gland cells


Slide 16

Hydra with developing bud and ovary


Slide 17

Life cycle of Obelia (Class Hydrozoa)


Slide 18

A Portuguese man-of-war colony,
Physalia physalis


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Fire coral


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Class Scyphozoa


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Cyanea capillata


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Order Stauromedusae


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Life cycle of Aurelia (Class Scyphozoa)


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Class Cubozoa
1.
2.
3.

Cubomedusa
Cube
Sea Wasp


Slide 25

Carybdea : a cubozoan medusa


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Chironex fleckeri


Slide 27

Box Jellyfish


Slide 28


Slide 29

Girl attacked by Chironex fleckeri


Slide 30

Class Anthozoa
1.
2.
3.
4.
5.
6.

7.
8.

Subclass Zoantharia or Hexacorallia
Sea anemones / Hard corals
Subclass Ceriantipatharia
Tube anemones / Thorny corals
Subclass Alcyonaria or Octocorallia
Soft corals / Horny corals
Hexamerous plan /Polymerous symmetry
Octomerous plan / Pinnate tentacles


Slide 31

Subclass Alcyonaria


Slide 32

Sea anemone
1.
2.
3.
4.
5.

Oral disc
Pedal disc
Pharynx
Siphonoglyph
Gastrovascular cavity


Slide 33

Sea anemone


Slide 34

Sea anemone
1.
2.
3.

4.
5.
6.

Primary septum
Secondary septum
Tertiary septum
Septal filament
Protandrous
Pedal laceration


Slide 35

Structure of a sea anemone


Slide 36

A sea anemone attacked by a sea star


Slide 37

Corals
1.
2.
3.

Zoantharian corals / Subclass Zoantharia
Thorny corals / Subclass Ceriantipatharia
Alcyonarian corals / Subclass Alcyonaria


Slide 38

Zoantharian corals


Slide 39

Subclass Ceriantipatharia


Slide 40

Black coral jewelry


Slide 41

Alcyonarian corals


Slide 42

Coral Reefs
1.
2.
3.

4.
5.
6.

Scleractinian
Hermatypic corals
Coralline algae
Fringing reef
Barrier reef
Atoll reef


Slide 43

Fringing reef


Slide 44

Barrier reef


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Atoll reef


Slide 46

Phylum Ctenophora
1.
2.
3.

4.

Sea Walnut
Comb Jelly
Haeckelia rubra
Bioluminescence


Slide 47

Phylum Ctenophora
1.
2.

Class Tentaculata / Pleurobrachia
Class Nuda / Beroe


Slide 48

Class Tentaculata


Slide 49

Pleurobrachia
1.
2.
3.
4.
5.
6.

7.
8.

Colloblast
Collenchyme
Digestive system /Gastrovascular system
Pharynx / Stomach
Aboral canal / Statocyst / Anal canal
Statocyst / Statolith
Determinant ( Mosaic )
Indeterminant ( Regulative )


Slide 50

Diversity among the phylum Ctenophora


Slide 51