Sponge Lab
Sponges are very simple creatures. They belong to the phylum Porifera. They possess no organs or digestive tract. They have no respiratory system, but instead, they filter feed. They don't move much and they stick to rocks or coral reefs. Since we were looking through a microscope it was hard to take pictures.
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Jellyfish Lab
Body Plan- Radially symmetry, central mouth surrounded by tentacles, body formats: Medusa and Polyp
Feeding- Paralyze pray, then pulls prey towards it's mouth, then goes to the digestive track Respiration, Circulation, and Excretion- All completed by diffusion Response- They use nerve nets, specialized cells to interact with their environment. Movement- Many cnidarians use a hydrostatic skeleton, which are made up of layers of circular muscles and a layer of longitudinal muscles that with water allow the organism to move. |
Earthworm Lab
Earthworms are very complex creatures. They possess bilateral symmetry, extracellular digestion, and cephalization. Earthworms have an one- way digestive system, a mouth, crop, intestines, and other organs. They have a closed circulatory system, and respire through their skin. They are also hermaphrodites because they poses both female and male sex organs.
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Perch LabThe general body shape of a perch is a fish. It has fins a head, tail, and many other features that help it live in the wild. The gills take out any contaminate from the water and filter the oxygen. The scales are slimy and shiny. They face towards the tail. These things provide a streamline surface and reflect light. reflecting light may allow them to blend with their environment. The perch has two nostriles. They are allot smaller and don't protrude. They are only used for scent, not breathing. A charectaristic of the fish's gill that could make it an efficient respitory organ is that it's close to the mouth. That way, oxygen doesn't have to travel all the way to the back of the fish. The lateral line looks like a very small line on the back of
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Grasshopper Lab
The phylum Molusca is more advanced than Porfera, Cnaidaria, and Annelid. They have developed a way of communicating, wings, and an exoskeleton. The grasshopper also has sensory organs like its antenna and its compound eyes.
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Squid Lab
The molluscan is far more complex the the rest of the phyla we have studied thus far. Species in molluscan have specialized tissues and organs, such as Ganglion ( a primitive brain), and tissues like the color changing chromatophores. I also has bilateral symmetry allowing for a more sophisticated body plan.
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