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Biology Test 234

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Biology Test 234
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Weekly Quiz Competition
  • Question 1
    4 / -1

    Key evolutionary advances of the flatworms are bilateral symmetry and

  • Question 2
    4 / -1

    For excretion, flatworms use

  • Question 3
    4 / -1

    The type of body cavity seen in the roundworms is called a (n)

  • Question 4
    4 / -1

    The type of pseudocoelomates found in soil, freshwater and marine environments, and as parasites, are

  • Question 5
    4 / -1

    Of the mollusks, snails are in the class of

  • Question 6
    4 / -1

    A mantle is

    Solution

    The mantle cavity functions as a respiratory chamber in most molluscs. In bivalves it is usually part of the feeding structure. In some molluscs the mantle cavity is a brood chamber, and in cephalopods and some bivalves such as scallops, it is a locomotory organ.

    Hence, the correct answer is option C.

     

  • Question 7
    4 / -1

    Segmentation was first apparent in the

  • Question 8
    4 / -1

    Which of the following is not present in polychaetes

  • Question 9
    4 / -1

    The phylum that shows the greatest diversity, or the greatest number of species, is

  • Question 10
    4 / -1

    Air for respiration enters the insect body through the

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