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Porifera/Cnidaria
| Question | Answer |
|---|---|
| General Characteristics of Kingdom Animalia | Eukaryotic, multicellular, no cell walls, and movement |
| Kingdom Animalia symmetry | asymmetric, raidal and bilateral |
| Tissue organization | cellular, tissue, organs and organ systems |
| Phylum Porifera | 100,000 species mostly marine, invertebrates, sessile filter feeders, solitary/colonial, bridge between protists and animals |
| Skeleton of Porifera | spicules and spongin |
| Spicules | in the skeleton used for structure and protection |
| Spongin | collagen fibers |
| Spongocoel | hollow opening where water fills in and out |
| Chanocute | flagellated cells that line spongocoel; filter for food |
| Amoebacytes | digestive cells |
| Osculum | opening at the top of the spongocoel |
| Three levels of complexity in Porifera | asconoid, leuconoid and syconoid |
| asconoid | simple, little surface area |
| Syconoid | more complex with chambers which increase surface area |
| Leuconoid | most complex with many many chambers which dramatically increases surface area which allows for better absorption |
| Class Calcarea | Phylum Porifera, Calcium carbonate spicules which are 3-4 rays, contain all three levels of body complexity, found in shallow coastal waters |
| Class Hexactinellida | Phylum Porifera, 6 base rays, silica or glass spicules, can be shaped like a cup vase or urn, body structure is either syconoid or leuconoid |
| Class Demospongia | Phylum Porifera, never have 6 rays, spongin fibers siliceous spicules or a combo of both, all leuconoid, includes the 'bath' sponge Spongia |
| Pirufera Reproduction | Sexual-hermaroditic, Asexual-fragmentation or gennules (fresh water) |
| Phylum Cnidaria | organization: tissue level no organalles, diploblastic (two germ issues), radial, life cyle: polymorphic polyp and medusa |
| Epidermis | for protection |
| Gastrodermis | for digestion |
| Class Hydrozoa | polyp predominant includes: hydras and Obelia |
| Obelia | Phylum Cnidaria Class Hydrozoa, colonial, attach to substrates, medusa stage is sexual, polyp produces new medusae asexually, has two types of polyps feeding and reproductive |
| Hydra | Phylum Cnidaria Class Hydrozoa found in shallow freshwater ponds, use stinging cnidocytes to capture prey, lack a medusa stage |
| Gastrozooids | feeding polyp of Obelia |
| Gonozooids | reproductive polyp of Obelia |
| Pysalia | Phylum Cnidaria Class Hydrozoa, commonly known as the Portuguese man-of-war, floating colony of highly integrated polymorphic polyps and medusoids, tentacles are armed with cnidocytes |
| Class Cyphozoa | Phylum Cnidaria, commonly refereed to as jellyfish, life cycle that emphasizes the medusa over polyp |
| Aurelia | Phylum Cnidaria Class Cyphozoa |
| Class Anthozoa | Phylum Cnidaria, represented by sea-anemones and corals, express only polyp, |
Created by:
missmyk
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