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Sponges & Cnidarian Chapter 35
Sponges Invertebrates - animals without back bones.Simplest of the multicellular animals. No organ system. Kingdom: animalia Phylum: porifera
Movement Holdfast - root-like - attach the sponge to rocks.Adult sponges are sessile - unable to move.
Structure : Skeleton SponginSpicule – hard, spike-like, particles of calcium carbonate of silicon dioxide that make up a sponges skeleton
Structure Collar cells-create a current of water through the sponge.Thousands of pores let water flow through it continually. Water exits through the osculum – opening at the top of the sponge.
Filter Feeding Obtain nourishment and oxygen from this water.Engulfed by collar cells and passed to amebocytes which distribute the nutrients to the rest of the body.
Reproduction Budding Gemmules Regeneration Sexual reproduction
Sexual Reproduction Sperm released Egg is fertilizedLarva form and leave the sponge. Larva settles and attaches to an object. Larva grows into an adult sponge.
Examples of cnidariansJellyfish Sea anemones Coral animals
Characteristics of CnidarianInvertebrates Radial symmetry Tentacles with stinging cells.
The two different forms of a Cnidarian bodyBell shaped Specialized for swimming Vase shaped Sessile existence
Movement Most cnidarians are slow-moving or sessileFound on shallow ocean floors, the bottom of ponds or drifting about in water currents.
Characteristics Gastrovascular cavity center of the body Hollow gutOne opening surrounded by tentacles
Feeding and Defense Cnidocytes – cells found on tentacles used for defense & capturing prey. Nematocyst – organelle in cnidocyte which can eject a filament with poison.
Sponges & Cnidarian. Sponges Invertebrates - animals without back bones. Invertebrates - animals without back bones. Simplest of the multicellular animals.
Phylum Porifera Sponges Phylum Cnidaria Jellyfish, corals .....
Invertebrates: Sponges and Cnidarians. Sponges: Phylum Porifera means- pore bearer Simplest of all animals Assymetrical animals that live in shallow waters.
Phylum Porifera Sponges Porifera “paw-rif-er-uh” Cnidarians.
Ch. 35 Porifera Invertebrates Animals without a backbone 97% of all species Simplest is sponge.
Monday March 2, 2009 There are 8 Invertebrate Animal Phyla, today we will begin researching the first two, can you name them? Where would you find these.
Invertebrates: Sponges and Cnidarians. Journal 2 You are an expert taxonomist who has been given an unknown specimen to identify. You suspect that it.
Phylum Porifera. Sponge Cells - Function Pore cells Osculum Choanocytes (Collar Cells) Amoebocytes Spicules Internal cavity (spongocoel)
Sponges, Cnidarians, and Ctenophores
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Chapter 33 Table of Contents Section 1 Porifera
Daily Activity Get out your notebooks and be prepared to take notes on Cnidaria.
From sponges to Men of War. Phylum Porifera – Fact Sheet Review Symmetry/Body Plan: assymetrical. No digestive organs, so no “body plan”. Digestion: Structures:
The Invertebrates Chapter 12A Introduction to the Animal Kingdom.
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Kingdom Animalia: Sponges & Cnidarians
Phylum Porifera Sponges. Porifera Sponges – Living on Earth for at least 540 million years – Most sponges live in the ocean Arctic to the tropics shallow.
Phylum Porifera Sponges. PHYLUM PORIFERA Sponges oldest of all animals few specialized cells sessile – can’t move.
Phylum Cnidaria Pages CNIDARIANS- “STINGING CELLS” SEA JELLIES SEA ANEMONES CORALS HYDRA.
Animal Phyla: Porifera & Cnidaria
Ch 26- Sponges and Cnidarians What characteristics do all animals share? – Members of kingdom Animalia, multicellular, eukaryotic heterotrophs, lack cell.
Sponges and Cnidarians
Discussion Questions 1. Please compare and contrast Phylum Porifera and Phylum Cnidaria Phylum Cnidaria 2/17/15 Using your textbook, journal, handouts,
BiologyMay 6, 2013 Objectives: Intro into Animals Notes Assignment: Vocab Terms NEED BOOKS THIS WEEK!! Vocab Quiz Wednesday!!! Grab notes sheet from side.
Bell work 1.Label the regions of the diagram below: What type of symmetry to the following pictures have:
Poriferans. Phylum Porifera Phylum Porifera – “pore-bearers” Sponges Tiny openings, pores, all over the body Cambrian Period – 540 m.y.a.; oldest and.
Rupp Bio II. Invertebrates No backbone No shared characteristics 12 phyla One million species 97% of all animals.
Sponges, Cnidarians and Ctenophores
SPONGES, CNIDARIANS,& CTENOPHORES. PHYLUM PORIFERA CHARACTERISTICS Includes marine & freshwater sponges Found in the kingdom Animalia & subkingdom Parazoa.
Chapter 33 Porifera (Sponges),
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Sponges. Phylum Porifera – “pore-bearers” (although now sponges are in multiple phyla) Sponges Tiny openings, pores, all over the body Cambrian Period.
Sponges Cnidarians Ctenophores
Invertebrates An invertebrate is a member of the Animal Kingdom without a backbone.
Sponges Phylum Porifera.
PORIFERA: S PONGES Porifera and Cnidarians. P ORIFERA The Sponges.
Sponges and Cnidarians 7 th Grade Biology. Sponges Sponges are the simplest form of multi- cellular animals. A sponge is a bottom- dwelling creature which.
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Wake-up 1.Explain the difference between one and two way digestion. 1.What is an example of an animal in the phylum Porifera? THINK about what it sounds.
Ch – Sponges, Cnidarians, & Ctenophores
SPONGES PORIFERA. I was part of the Cambrian explosion!
Have tentacles with nematocysts near mouth. Nematocysts are stinging cells Cnidaria is Greek for “stinging cell” Examples: jellyfish, sea anemone,
CNIDARIA. Characteristics Class Scyphozoa- Jellyfish- medusa form Class Antozoa- corals, sea anemones- polyp form Class Hydrozoa- Hydras Tentacles.
Kingdom Animalia: Porifera & Cnidaria
JELLYFISH SEA ANEMONE Phylum Cnidaria Sea Anemone Jellyfish Coral Cnidarian Video.
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