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15 March, 03:33

Which of the following correctly describe a sea urchin?

Select all that apply.

cnidarian

chordate

invertebrate

echinoderm

deuterostome

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Answers (2)
  1. 15 March, 03:43
    0
    Option D, Echinoderm

    Explanation:

    Deuterostome are species which are bilalteral in structure and the first embryonic opening becomes the anus.

    There are three classes of deuterostome namely

    • Chordata

    • Echinodermata

    • Hemichordata

    The sea urchin belongs to the phylum Echinodermata which have radial symmetry (includes starfish etc.) and have a unique a water-vascular system (hydraulic system) which is used for respiration, locomotion and transportation of food item.

    Thus, option D is the correct answer.
  2. 15 March, 03:58
    0
    Sea Urchins are described as Deuterostomes
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