Sponges And Cnidarians

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Sponges And Cnidarians

  1. 1. Sponges and Cnidarians
  2. 2. Sessile <ul><li>Sessile animals are those which are not able to move about. They are usually permanently attached to a solid substrate of some kind, such as a rock, or the hull of a ship in the case of barnacles. Corals lay down their own substrate . </li></ul>
  3. 3. Filter Feeder <ul><li>Animals that feed by straining suspended matter and food particles from water. Some animals that use this method of feeding are clams, krill, flamingos, sponges and whale sharks. </li></ul>
  4. 4. Collar Cell <ul><li>One of a layer of flagellated cells lining the body cavity of a sponge and characterized by a collar of cytoplasm surrounding the flagellum. </li></ul>
  5. 5. Regeneration <ul><li>In biology, an organism is said to regenerate a lost part, if a substitute for the loss grows from the rest of the organism, and the substitute is a copy or almost a copy of the old lost part. </li></ul>
  6. 6. Hermaphrodite <ul><li>A hermaphrodite is an animal having both male and female reproductive organs. </li></ul><ul><li>The two sexes are not separated into distinct male and female types of individual. </li></ul>
  7. 7. Larva <ul><li>A larva is a juvenile form of animal with indirect development, undergoing metamorphosis. </li></ul>
  8. 8. Cnidarian <ul><li>A phylum of hollow-bodied animals with stinging cells. </li></ul>
  9. 9. Tentacle <ul><li>Tentacles can refer to the elongated flexible organs that are present in some animals, especially invertebrates. </li></ul>
  10. 10. Polyp <ul><li>a polyp is one of two forms of individuals found in many species of cnidar i ans . The two are the polyp or hydroid and the medusa. Polyps are approximately cylindrical, elongated on the axis of the body. </li></ul>
  11. 11. Medusa <ul><li>a medusa is a form of cnidarian in which the body is shortened on its principal axis and broadened, sometimes greatly, in contrast with polyps. Medusae vary from bell-shaped to the shape of a thin disk, scarcely convex above and only slightly concave below. </li></ul>

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