Biology 1st Edition by Jerome Krueger, Kendra Hill, Robert Noyd

تمرين 21

The moon-walking inchworm is the caterpillar life stage of the geometer moth ( Fig. ). Inchworms have feet at both ends of their body. To move forward, their front feet grab a leaf and pull the back end up. The back legs then grab the leaf and allow the front legs to reach out, creating the impression that the inchworm is measuring its journey inch by inch. Based on this information, describe the type of skeleton the inchworm might possess. What kind of rigid structure do its muscles pull against as the inchworm moves across the edge of leaves?
Figure The inchworm is the caterpillar life stage of the geometer moth.