In Order for an Earthworm to Lengthen Several Contiguous Segments

question 14

Multiple Choice

In order for an earthworm to lengthen several contiguous segments of its body,it must

• A)contract its circular muscles,which pulls up the chaetae and moves the body fluid parallel to the long axis of the worm.
• B)contract its longitudinal muscles,which pulls up the chaetae and moves the body fluid perpendicular to the long axis of the worm.
• C)contract its circular muscles,which extends the chaetae into the surrounding soil and moves the body fluid parallel to the long axis of the worm.
• D)contract its longitudinal muscles,which extends the chaetae into the surrounding soil and moves the body fluid parallel to the long axis of the worm.
• E)contract its circular muscles,which extends the chaetae into the surrounding soil and moves the body fluid perpendicular to the long axis of the worm.