Which one of the following objects most closely resembles the pattern of the tube- within- a- tube body plan?
A) a bowling ball with finger holes drilled)
B) a pipe with a straw inside
C) a soda can with the tab removed
D) a cup with a straw in it

Question

Quizplus · Accepted Answer

The tube-within-a-tube body plan consists of an inner digestive tube (the gut) that is surrounded by an outer body wall. Option B, a pipe with a straw inside, best represents this body plan. The pipe can be thought of as the outer body wall and the straw inside as the inner digestive tube, both nested within each other. The other options do not have this clear differentiation between an inner and outer structure.

Which One of the Following Objects Most Closely Resembles the Pattern