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Chapter 6. Marine Animals Without Backbones. Protista. Single cellular eukaryotes & multicellular algae. Protozoa. Heterotrophic of animal-like protists. Foraminiferans. Protozoan with a calcium carbonate shell. Radiolarians. Protozoan with a glass shell. Ciliates.
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Chapter 6 • Marine Animals Without Backbones
Protista • Single cellular eukaryotes & multicellular algae
Protozoa • Heterotrophic of animal-like protists
Foraminiferans • Protozoan with a calcium carbonate shell
Radiolarians • Protozoan with a glass shell
Ciliates • Protozoan with hairlike structures on its surface that is used for mobility
Pseudopodia • False feet • Oozing cytoplasm
Ooze • Fine sediment on the ocean floor
Calcareous Ooze • Fine sediment made up of calcium carbonate
Siliceous Ooze • Fine sediment from silicates or silicone dioxide
Diatomaceous Ooze • Fine sediment from diatom shells
Foramaceous Ooze • Fine sediment made from the shells of forams
Radiolarian Ooze • Fine sediment made from radiolarian shells
Animalia • Multicellular complex heterotrophs • No cell wall • No Chloroploasts
Vertebrates • Animals with backbones
Invertebrates • Animals without backbones
Sponge • Phylum: Porifera
Characteristics • Simplest animal, No true tissue, Little symmetry, Pores, Sessile as adult, protein skeleton, spicules, regeneration, sex & asex
Spongin • Protein skeleton in sponges
Spicules • Glass barbs emitted by sponges when you rub against one
Sessile • Attached to a surface
Osculum • Opening at the top of a sponge • Water forced out through osculum
Suspension Feeders • Organisms that feed on suspended particles
Filter Feeders • Organisms that filter particles out of the water
Types of Sponges • Boring Sponge • Glass Sponge • Encrusting sponge • Bath sponge
Jellies • Phylum: Cnidaria • Coelenterata • Jellies, coral, sea anemones, hydras
Characteristics • Tissue but no organs, transparent jelly-like body, radial symmetry, tentacles, stinging cells • sexual & asexual
Medusa • Bell shaped drifting body with tentacles hanging below
Polyp • Tubular shaped body • Attached to a surface at one end • Tentacles point out
Radial Symmetry • Symmetry like a circle or ball, one slice may be cut out of the circle that is identical to other slices
Nematocysts • Stinging cells
Planula • Larval stage of Cnidarians that is planktonic
Classes of Cniderians • Hydrozoa • Anthozoa • Scyphozoa • Siphonophora
Hydrozoa • Willowy polyp • Hydras
Anthozoa • Muscular polyp • Sea anemones, & coral
Scyphozoa • Medusa • Jelly fish or jellies
Siphonophora • Floating colonies with gas filled bell & hanging tentacles • Portugese Man-of-war
Comb Jellies • Ctenophora • Radially symmetrical with eight rows of cilia
Flat Worms • Phylum: Platyhelminthes • Organs & crude systems, Bilateral symmetry, flattened body
Bilateral Symmetry • Bodies are arranged into two identical halfs • Left & right
Cephalization • Head formation • Anterior end