[Campbell Biology P.737] Based on the provided images and their scale bars, arrange the foll... | Practice Question

Based on the provided images and their scale bars, arrange the following organisms from smallest to largest average size:

  • A: I. A cycliophoran, II. A gastrotrich, III. A loriciferan
  • B: III. A loriciferan, I. A cycliophoran, II. A gastrotrich
  • C: II. A gastrotrich, I. A cycliophoran, III. A loriciferan
  • D: I. A cycliophoran, III. A loriciferan, II. A gastrotrich

Explanation

The scale bars provided with the images indicate the following approximate sizes: A loriciferan is 50 μm, a cycliophoran is 100 μm, and a gastrotrich is 200 μm. Therefore, from smallest to largest, the order is Loriciferan, Cycliophoran, Gastrotrich.