[Campbell Biology P.1182] An animal relies solely on a hydrostatic skeleton for support and m... | Practice Question

An animal relies solely on a hydrostatic skeleton for support and movement. Based on the characteristics described in the text, which of the following activities would be MOST challenging for this animal?

  • A: Burrowing through soft soil.
  • B: Crawling on a submerged surface.
  • C: Walking upright on land.
  • D: Cushioning internal organs from shocks.

Explanation

The text explicitly states that 'a hydrostatic skeleton cannot support walking or running, in which an animal's body is held off the ground.' All other options describe activities that hydrostatic skeletons are either suited for or can assist with, according to the text.