Early gastropods had a coiled shell that did not twist to the right or left;this bilaterally symmetrical shell is called
A)sinistral.
B)planospiral.
C)conispiral.
D)dextral.
E)scaphopodal.

Question

Quizplus · Accepted Answer

The term "planospiral" refers to a coiled shell that does not twist to the right or left, which is characteristic of early gastropods. "Sinistral" refers to a shell that coils to the left, while "dextral" refers to a shell that coils to the right. "Conispiral" refers to a spiral shell that tapers to a point, and "scaphopodal" refers to a type of mollusk with a tubular, tapered shell.

Early Gastropods Had a Coiled Shell That Did Not Twist