Fish and Mollusks

1. In which of the following vertebrates have biologists demonstrated hearing and sound sensing through the acoustico-lateralis system?

  1. Birds
  2. Snakes
  3. Reptiles
  4. Fish
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Answer: Option D. Fish

2. Which of the following fish lacks a Central Nervous System?

  1. Jelly Fish
  2. Crayfish
  3. Star Fish
  4. Gold Fish
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Answer: Option A. Jelly Fish

3. Octopus belongs to which class?

  1. Gastropoda
  2. Bivalvia
  3. Cephalopoda
  4. Polyplacophora
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Answer: Option C. Cephalopoda

4. Which of the following is considered a Mollusk?

  1. Starfish
  2. Squid
  3. Sea Urchin
  4. Jellyfish
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Answer: Option B. Squid

5. Which of the following is not classified as a Fish?

  1. Star Fish
  2. Gold Fish
  3. Trout
  4. Cat Fish
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Answer: Option A. Star Fish