The pores leading to both the protocoel and paired coelomic cavities of the enteropneust hemichordates allow
A)fertilization of eggs by sperm.
B)exchange of fluids for a low efficiency respiratory system.
C)water to be drawn in to stiffen the chambers to aid in burrowing.
D)excretion of wastes.
E)movement of ions and water to keep an osmotic balance.

Question

Quizplus · Accepted Answer

The pores in the enteropneust hemichordates allow water to be drawn in, which helps to stiffen the chambers and aid in burrowing. The respiratory system in these animals is not through the pores, but rather through gill slits. The pores do not play a role in fertilization, excretion of wastes, or maintaining osmotic balance.

The Pores Leading to Both the Protocoel and Paired Coelomic