Phylum Porifera Sponges The First Animals Sponges are
- Slides: 19
Phylum Porifera Sponges The First Animals
Sponges are animals and belong to the Animal Kingdom. Characteristics: 1. Multicellular 2. No organs or body systems 3. Cellular digestion – no mouth, no stomach, no anus (heterotrophic) 4. Asymmetry
Sponges are SESSILE – they do not move They obtain food by FILTER FEEDING
They reproduce sexually (with sperm and eggs) in the water (external fertilization) They can also reproduce asexually (regeneration)
Collar Cells – flagellated cells in the sponge that move water, food, and nutrients and take away waste.
• Sponges have no nervous system – they cannot respond to environment and cannot feel. • Shape of Life Video - Origins (Sponges) http: //shapeoflife. org/video/phyla/s ponges-origins or http: //vimeo. com/37032195
Phylum Cnidaria Jellyfish Song http: //www. youtube. com/watch? v=iub. J-XSL 9 go
Cnidarians - jellyfish, coral, hydra, sea anemone *Named for the stinging cells or cnidoblasts that cover their tentacles, which contain stinging threads called nematocysts.
Characteristics of Cnidarians: • Radial Symmetry • Mouth • Nerve Net • Gastrovascular cavity • Tentacles with Cnidoblasts (stinging cells)
Most Cnidarians have radial symmetry
Nematocysts (barbs)
Gastrovascular cavity (digestion)
Cnidarians have two body forms: polyp (vase shaped) medusa (cup shaped)
Portuguese Man of War is not a Jellyfish it is a cnidarian that floats in the water and has long tentacles Portuguese Man of War Video http: //boston. cbslocal. com/2013/07/04/po rtuguese-man-of-wars-sting-12 -athorseneck-beach-in-westport/
The Hydra is a freshwater cnidarian. What kind of symmetry does hydra have? Is it a medusa or a polyp?
Video of hydra at http: //www. microscopyu. com/moviegallery/pondscum/hydra/
Coral Reefs are made from the skeletons of cnidarians
Shape of Life Video Life on the Move (Cnideria) http: //shapeoflife. org/video/phyla/cnidaria ns-life-move or http: //vimeo. com/37267733
- Bagian porifera
- Mikael ferm
- Sponge gas exchange
- Porifera body plan
- Ascon
- Sponges unique characteristics
- What is the ecological importance of sponges
- Collar cell
- Cellular level of organisation
- Sponge physiology
- Porifera- characteristics
- Porifera
- Calcareous sponges
- Phylum filicinophyta
- الاسفنج
- Enchinoderma
- Phylum
- Phylum porifera
- Leucosolenia microscope
- What phylum means little rings