Mollusks & Echinoderms: Body Parts

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Across
  1. 2. Houses the gill. (mollusk)
  2. 5. Extends from the mouth, slides back and forth like a garden rake, and scrapes & scoops algae off rocks. (mollusk)
  3. 7. Has three cavities including one around the heart, one around the reproductive organs, and one around part of the kidney. (mollusk)
Down
  1. 1. Extracts oxygen dissolved in water and disposes of waste. (mollusk)
  2. 2. Outgrowth of the body surface that drapes over the animal and produces shells in clams in snails and functions in respiration, waste disposal, and sensory reception. (mollusk)
  3. 3. A suction-like structure that functions in locomotion, feeding, and respiration. (echinoderm)
  4. 4. Spiny plates embedded under the skin and are part of an internal skeleton. (echinoderm)
  5. 6. A muscular mass of tissue which functions in locomotion and is the force of movement. (mollusk)