We think you have liked this presentation. If you wish to download it, please recommend it to your friends in any social system. Share buttons are a little bit lower. Thank you!
Presentation is loading. Please wait.
supports HTML5 video
Published bySage Winslett
Modified over 8 years ago
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 Phylum Porifera.
Sponges Cnidarians Ctenophores
Rupp Bio II. Invertebrates No backbone No shared characteristics 12 phyla One million species 97% of all animals.
Kingdom Animalia Unit 4.
Animal Phyla: Porifera & Cnidaria
Kingdom Animalia: Sponges & Cnidarians
Sponges Chapter 9 Section3.
Chapter 33 Porifera (Sponges),
Ch 26- Sponges and Cnidarians What characteristics do all animals share? – Members of kingdom Animalia, multicellular, eukaryotic heterotrophs, lack cell.
Sponges and Cnidarians
Phylum Porifera Sponges Porifera “paw-rif-er-uh” Cnidarians.
BiologyMay 6, 2013 Objectives: Intro into Animals Notes Assignment: Vocab Terms NEED BOOKS THIS WEEK!! Vocab Quiz Wednesday!!! Grab notes sheet from side.
Sponges, Cnidarians, and Ctenophores
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.
Chapter 23 Invertebrate Diversity
Sponges, Cnidarians and Ctenophores
The Invertebrates Chapter 12A Introduction to the Animal Kingdom.
Invertebrates: Sponges and Cnidarians. Journal 2 You are an expert taxonomist who has been given an unknown specimen to identify. You suspect that it.
Daily Activity Get out your notebooks and be prepared to take notes on Cnidaria.
Ch. 35 Porifera Invertebrates Animals without a backbone 97% of all species Simplest is sponge.
© 2023 SlidePlayer.com Inc. All rights reserved.