Goals for today. • Learn to recognized the Phylum Porifera from other animals. • Learn the main ‘diagnosàc’ characterisàcs. • Learn about some sponges biology . FILO PORiFERA. Introdução Estrutura Reprodução A reprodução pode ocorrer de dois modos: sexuada e assexuada. Bibliografia. Filo Porifera. No description. by. on 26 July Comments (0). Please log in to add your comment. Report abuse. Transcript of Filo Porifera. Filo Porifera.
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These are the simplest metazoans. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.
Take a slide from your box with Sycon, Grantia, or Scypha this is a cross section cut: Take a slide from your box with Sycon, Grantia, or Scypha in a longitudianal cross section you would see the following specialized cells: Some species of Euplectella have a commensal relationship with a shrimp species.
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A young male and female shrimp enter the central cavity and live there. As they grow they become too large to escape through the sieve-like covering of the osulum, and so spend their entire life inside the porufera. Gemmules are asexual reproductive structures of freshwater sponges and some marine sponges of the class Demonspogiae.
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By jock Follow User. Description Statistics Report Filo Porifera. Porifera These are the simplest metazoans Little or no tissue organization Said to belong to the cellular level of organization. No organs, no systems, no mouth, or digestive tilo, only rudimentary nervous integrations. Porifera Main characteristics of sponges are: Internal skeletons of spicules or organic fibers spongin.
Porifera Most are marine Freshwater species are found in ponds and streams Solitary or colonial Adults are sessile. Leuconoide Asconoide Siconoide Porifera: Spicules of calcium carbonate Needle-shaped or rayed spicules Canal systems asconoid, siconoid, or porifer All marine Hexactinellida: Canal systems siconoid or leuconoid All marine, and most deep water spp.
Siliceous spicules lorifera six-rayedspongin or both Canal systems leuconoid One family freshwater, most marine Most sponges belong to this class. Your Tasks Exercise 7: Porifera sponges Class Calcarea Genus: Sycon Put a preserved Sycon in a petri dish for you to take a look at the shape, osculum, and spicules.
There is also a model of Sycon, learn about its parts. Leucosolenia Leucosolenia has an asconoide canal system. Leucosolenia Try to find the osculum.
This is a colonial species of tubular individuals in various stages of development osculum. Look in the micro a slide of Leucosolenia body and its spicules. Porifera sponges Class Hexactinellida Genus: Look at preserved poriffra of Euplectella Some species of Euplectella have a commensal relationship with a shrimp species.
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Porifera sponges Class Demonspongiae Gemmulas asexual reproductive structures Gemmules are asexual reproductive structures of freshwater sponges and some marine sponges of the class Demonspogiae What is their function in reproduction?
Important Links Porifera http: Porifera and Cnidarians. The Sponges — Phylum Porifera. Phylum Porifera oorifera sponges. Download Presentation Connecting to Server.