Biology > EXAM > Animal Kingdom II: Phylum Cnidaria Exam Questions and Answers (All)

Animal Kingdom II: Phylum Cnidaria Exam Questions and Answers

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Over 10,000 species - How many species of Cnidarians have currently been identified? Cnidaria Examples - Jellyfish, Corals, Sea Anemone, Sea Rod, Hydra. Radial - What type of body symmetry do ad... ult Cnidarians exhibit? Tissue level - What is the highest level of organization exhibited by Cnidarians? Sac-like bodies. - What term is used to describe the body of Cnidarians? One Body Opening - How many body openings do Cnidarians have? Tentacles - What structures are found around the mouth of Cnidarians? Endoderm and Ectoderm - What germ tissue layers are present Cnidarians? Cnidocytes - What is the name for the specialized cells on the tentacles that contain nematocysts? Some penetrate and hold the prey; others inject a paralyzing neurotoxin. - What are the two different functions of the nematocysts? Polyp - What is the name for the non-mobile stationary stage of the cnidarian life cycle? Medusa - What is the name for the free-swimming stage of the cnidarian life cycle? Whichever form they exist in the longest during its life cycle. - How do you determine which Cnidarian body form is the adult form? Muscle and Nervous - What are the two major tissue types found in cnidarians? 1st Stage - Which stage of the cnidarian life cycle consists of a planular larva, which developed from a zygote (fertilized egg)? 2nd Stage - In which stage of the cnidarian life cycle does the planular larva develop into a polyp? 3rd Stage - In which stage of the cnidarian life cycle does the polyp asexually form male and female medusa? 4th Stage - In which stage of the cnidarian life cycle does the free-swimming medusa produce sperm and eggs, which unite to form the zygote? Anthozoa - The class of cnidarians that includes true corals, anemones, and sea pens. Cubozoa - The class of cnidarians that includes the amazing box jellies with complex eyes and potent toxins. Hydrozoa - The class of cnidarians that are the most diverse group, which includes the siphonophores, hydroids, and fire corals. Scyphozoa - The class of cnidarians that include the true jellyfish. Glutinant - The type of nematocysts that have a sticky surface used to stick to prey. Penetrant - The type of nematocysts that are harpoon-like and are used to penetrate prey. Volvent - The type of nematocysts which are a lasso-like thread and when it is discharged the prey become entangled in it. [Show More]

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