So... don’t just sit there...

“Even if you are on the right track,

                                  ~ Will Rogers

you will get run over if you just sit there.”

answer a few of these questions!

Animalia

Our next Group is a member of what Kingdom?

Cnidaria

Our next Group is a member of what Phylum?

PHYLUMCNIDARIA

Greek:“knide”

Meaning:“nettle”

What does the phylum name mean?

CNIDARIAExample animals?- Jellyfish

CNIDARIAExample animals?- Corals

CNIDARIAExample animals?- Hydra

CNIDARIAExample animals?- Anemones

CNIDARIACharacteristics?

Six Cell Types =

Symmetry = Radial

1 Epidermal 2 Cnidocyte

3 Nerve

5 Muscle 6 Gland

4 Sensory

CNIDARIA

- What about the function of this one in a Hydra?

Characteristics?

- What was the function of the central chamber in the sponge?

- Food Digestion

- Water exit path

CNIDARIA- Name of chamber?

- Gastrovascular Cavity (coelenteron)

Characteristics?

- Number of Cell layers?

Mesoglea

(external?)(internal?)

- Between them?

- Ectoderm - Endoderm

CNIDARIA- Digestion inside a cell?

- Intracellular Digestion

Digestion Types?

- Amoeba capture tool?- Pseudopodia

- Amoeba capture method?- Phagocytosis

- Digestion outside a cell?- Extracellular Digestion

CNIDARIA

- Two Body Forms =

1 Polyp

- Energy = Heterotrophic

Characteristics?

CNIDARIA

- Two Body Forms =

1 Polyp

- Energy = Heterotrophic

2 Medusa

- Species? 9,000

Characteristics?

- Evolution? Dead End !!

CNIDARIA- Reproduction – 2 ways?:

1 Asexual 2 Sexual(polyp)

- Budding to polyp

(medusa)- Sperm & Egg fuse

larva, which then forms a . . .- Budding

to medusa

and?

Bodyform?

Characteristics?

polyp

and form a . . .How?

How?

Body form?

How?

CNIDARIA

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CNIDARIA

CNIDARIA

CNIDARIA

CNIDARIA

CNIDARIA

CNIDARIA

CNIDARIA

CNIDARIA

CNIDARIA

CNIDARIA

CNIDARIA

CNIDARIA

Class #1

CNIDARIA

Hydrozoa

2 Physalia1 Hydroids

Examples?

?

Hint: all are Polyps

?

Budding is mostcommon asexualmethod used

Class #2

CNIDARIA

Scyphozoa

- from arctic to tropics

The Jellyfish

- down to 1,000 meters

- medusa dominates

?

Class #2

CNIDARIA

Scyphozoa

- Statocysts

The Jellyfish Specialized structures?

?

- Ocelli / Rhopalia

Specialized structures

- Statocysts

What else?

Scyphozoa

Class #3

CNIDARIA

AnthozoaThe Corals

- polyp dominates

- CaCO3 reefs grow 2 mm/year - “bleaching” kills

?Ex?

Class #3

CNIDARIA

AnthozoaThe Corals

TwoTypes

Type is

based on internal walls

Class #3

CNIDARIA

AnthozoaThe Corals

- responsible forthe largest structureever constructed bya living thing.

Class #3

CNIDARIA

AnthozoaThe Corals

- The GreatBarrier Reefof Australia.

Class #3

CNIDARIA

AnthozoaThe Corals HINT: If you touch

them and pull your fingers away, it willfeel like your skin is being torn off,but with no pain!

& what other Anthozoan group? ? ?

Class #3

CNIDARIA

Anthozoa The Corals

- both may contain symbiotic green??? zooxanthellae

& Anemones

CNIDARIAHunter tools?

Nematocysts

Physalia Tentacles

CnidocystsCnidocytes?

StingingCells

? ?

CNIDARIACnidae

CNIDARIA

CNIDARIA

Fire CoralNematocystsVideo . . . next . . .

CNIDARIALab Activities:1 Google Vocab List Search2 Examine Pond Water For Hydrozoan Cnidocytes3 Examine Preserved Aurelia aurita & questions