Answer: Option A : A Based on the type of symmetry they exhibit, organisms are generally categorised as radial and bilateral. Among the options, jellyfish (a cnidarian) and starfish (an echinoderm) exhibit radial symmetry. Tapeworm (a flatworm) and octopus (a mollusc) are both bilaterally symmetrical. Hydra (a cnidarian) is radially symmetrical and shark (a fish) is bilaterally symmetrical. Amoeba, a unicellular organism with no definite shape, can be described as asymmetrical. Sea urchin (an echinoderm) is radially symmetrical.
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