spongebob

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Across
  1. 3. a solitary or colonial sedentary form of a coelenterate such as a sea anemone, typically having a columnar body with the mouth uppermost surrounded by a ring of tentacles. In some species, polyps are a phase in the life cycle which alternates with a medusoid phase.
  2. 8. In Greek mythology, Medusa was a monster, a Gorgon, generally described as a winged human female with living venomous snakes in place of hair. Those who gazed upon her face would turn to stone.
  3. 10. a larval jellyfish, after it has separated from the scyphistoma.
  4. 11. cavity The gastrovascular cavity is a structure found in primitive animal phyla. It is responsible for both the digestion of food and the transport of nutrients throughout the body. The cavity has only one opening to the environment. Food goes in and waste comes out that same opening, making it a two-way digestive tract
  5. 12. skeleton A hydrostatic skeleton, or hydroskeleton, is a flexible skeleton supported by fluid pressure. Hydrostatic skeletons are common among simple invertebrate organisms.
Down
  1. 1. the fixed polyp-like stage in the life cycle of a jellyfish, which reproduces asexually by budding (strobilation).
  2. 2. The gastrodermis is the inner layer of cells that serves as a lining membrane of the gastrovascular cavity of Cnidarians. The term is also used for the analogous inner epithelial layer of Ctenophores.
  3. 4. A planula is the free-swimming, flattened, ciliated, bilaterally symmetric larval form of various cnidarian species and also in some species of Ctenophores. Some groups of Nemerteans also produce larvae that are very similar to the planula
  4. 5. a specialized cell in the tentacles of a jellyfish or other coelenterate, containing a barbed or venomous coiled thread that can be projected in self-defense or to capture prey.
  5. 6. Mesoglea refers to the tissue found in jellyfish that functions as a hydrostatic skeleton. It is related to but distinct from mesohyl, which generally refers to tissue found in sponges.
  6. 7. The cnida is the basic term for the stinging apparatus of the phylum Cnidaria. The whole life-style of the phylum is based on this device, which enables the animals to catch their prey. The cnida appears in several forms: the most usual is the nematocyst
  7. 9. A cnidocyte (also known as a cnidoblast or nematocyte) is an explosive cell containing one giant secretory organelle or cnida (plural cnidae) that defines the phylum Cnidaria (corals, sea anemones, hydrae, jellyfish, etc.). Cnidae are used for prey capture and defense from predators