Invertebrates MCQ Questions and Answers Quiz

11. Which of the following is true of members of the phylum Cnidaria?

  1. They are not capable of locomotion because they lack true muscle tissue.
  2. They are primarily filter feeders.
  3. They have either or both of two body forms: mobile polyps and sessile medusae.
  4. They may use a gastrovascular cavity as a hydrostatic skeleton.

12. The members of which class of the phylum Cnidaria occur only as polyps?

  1. Hydrozoa
  2. Scyphozoa
  3. Anthozoa
  4. Cubozoa

13. Corals are most closely related to which group?

  1. jellies
  2. freshwater hydras
  3. sea anemones
  4. sponges

14. Which characteristic is shared by both cnidarians and flatworms?

  1. dorsoventrally flattened bodies
  2. flame bulbs
  3. radial symmetry
  4. a digestive system with a single opening

15. Generally, members of which flatworm class(es) are nonparasitic?

  1. Turbellaria
  2. Trematoda
  3. Cestoda
  4. Monogenea

16. In a small stream, you pick up a rock and observe many small, flattened worms crawling on its undersurface.You decide that they belong to the phylum Platyhelminthes. To which class do they probably belong?

  1. Cestoda
  2. Monogenea
  3. Turbellaria
  4. Trematoda

17. What would be the most effective method of reducing the incidence of blood flukes in a human population?

  1. Reduce the mosquito population.
  2. Reduce the freshwater snail population.
  3. Purify all drinking water.
  4. Avoid contact with rodent droppings.

18. The larvae of many common tapeworm species that infect humans are usually found

  1. encysted in freshwater snails.
  2. encysted in the muscles of an animal, such as a cow or pig.
  3. crawling in the abdominal blood vessels of cows and pigs.
  4. encysted in the human brain.

19. While vacationing in a country that lacks adequate meat inspection, a student ate undercooked ground beef.Sometime later the student became easily fatigued, and lost body weight. At about the same time, whitish,flattened, rectangular objects full of small white spheres started appearing in his feces. Administration of niclosamide cured the problem. The student had probably been infected by a

  1. pinworm.
  2. hookworm.
  3. nematode.
  4. tapeworm.

20. Which of the following correctly characterizes the phylum Rotifera?

  1. a single-opening digestive tract
  2. a pair of mandibles made of chitin
  3. parthenogenic reproduction
  4. inability to persist in environments where they might undergo desiccation
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MCQ Multiple Choice Questions and Answers on Invertebrates

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Invertebrates Question and Answer

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