If nudibranch rhinophores are located at the anteriors of these sea slugs, then they contribute to the sea slugs'
A) segmentation.
B) lack of torsion.
C) cephalization.
D) identity as lophotrochozoans.
E) ability to successfully carry out a sessile lifestyle.

Question

Quizplus · Accepted Answer

Rhinophores are sensory structures used for chemoreception and are located on the head of the nudibranch. This localization of sensory structures on the head is a characteristic of cephalization, which is the concentration of nervous tissue and sensory structures at the anterior end of an animal. Therefore, the presence of rhinophores contributes to the sea slug's cephalization.

Note: A is incorrect because segmentation refers to the division of an animal's body into repeated units. B is incorrect because torsion is a specific type of twisting that occurs during the larval stage of some mollusks, resulting in the repositioning of the anus and mantle cavity. D is incorrect because the nudibranch's classification as a lophotrochozoan is based on molecular and developmental characteristics, not the presence of rhinophores. E is incorrect because the ability to carry out a sessile lifestyle refers to an animal's ability to remain attached to one location, while rhinophores allow the nudibranch to actively seek out food sources.

If Nudibranch Rhinophores Are Located at the Anteriors of These