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Figure CO 7

Figure CO 7

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Figure CO 7. Simple, multicellular animals No organs or true tissues Asymmetrical Filter feeders. Types of cells in sponges. Water flow through a sponge. Reproduction in sponges. Reproduction in Sponges. Asexual Budding Gemmules (packets of cells in a resistant coating - PowerPoint PPT Presentation

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Figure CO 7

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Simple, multicellular animalsNo organs or true tissuesAsymmetricalFilter feeders

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Types of cellsin sponges

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Water flowthrough a sponge

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Reproduction in sponges

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Reproduction in Sponges

AsexualBuddingGemmules (packets of cells in a resistant coating

Sexual reproductionHermaphroditicSperm or eggs released at any time/spongeInternal fertilizationCiliated larvae produced that swim in water

Settle on hard surface and create new sponge

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The carnivorous “velcro”sponge (Family Cladorhizidae)

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Hermit crab sponges

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Hermit crab sponges reproduce with gemmules, spore-like structures, resistant to being dried out.

Hermit crabs prefer shells without sponges on them.

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“Boring sponge” on a scallop shell. Major decomposer of calcium carbonate in ocean.

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Phylum Cnidaria

Nematocysts (stinging cells)

Radial symmetry

Polyp and medusa form

Reproduce Asexually (budding)or Sexually (sperm and eggs)Planula larvae metamorphoses into adult

form.

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Phylum CnidariaFeeding

carnivorous (use nematocysts)

and/or

photosynthetic (corals, anemones)cells contain zooxanthellae, symbiotic algae in the phylum Dinoflagellates

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Phylum Cnidaria

4 major groups:

Anthozoans (corals, anemones, sea pens)

Hydrozoans (siphonophores, hydroids, fire corals, many medusae)

Cubozoa (box jellyfish)

Scyphozoa (Jellyfish)

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Figure 7.5

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Phylum Cnidaria

Hydroids- Siphonophores (above)(portuguese man-o-war)- Feathery hydroids(picture at right)

Polyp form is dominant.

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Phylum Cnidaria

Box Jellyfish(Class Cubozoa)

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Phylum Cnidaria: Jellyfish (medusa form only)

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Phylum Cnidaria: Anthozoans corals and anemones, anemone shown above) (polyp form is dominant)

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Phylum Cnidaria: Anthozoans (corals and anemones, coral shown above) (polyp form is dominant)

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Figure 14.24

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Figure 14.25

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Figure 14.26

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Figure 7.11

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Phylum Annelida (segmented worms)Most marine annelids are polychaetes

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Polychaetes living in tubes“tube worms”

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Living polychaete

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Feeding modes

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Figure 7.29

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Snail and radula

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Figure 7.21d

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Figure 7.20

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Figure 7.25

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Figure 7.24

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Phylum Mollusca

Snails and limpets (Gastropods)

Mussels, clams, scallops, oysters (Bivalves)

Octopus, squid, cuttlefish (Cephalopods)

Chitons (Polyplacophora)

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What are 3 examples of radially-symmetricanimals that live in the sea?

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What are 3 examples of radially-symmetricanimals that live in the sea?

What is an example of a radially-symmetric animal that lives on land?

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What are 3 examples of filter-feeding animals that live in the sea?

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What are 3 examples of filter-feeding animals that live in the sea?

What do they eat?

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What are 3 examples of filter-feeding animals that live in the sea?

What do they eat?

What is an example of a filter feeding animal that lives on land?