The evolutionary tendency where nerve cells and sense organs are grouped in the front or anterior part of the animal, the head, is called ___________.
A. cephalization
B. segmentation
C. deuterostome
D. coelom
my best answer is B is that correct
Google and Wiki are good friends when we need word definitions or meanings.
cephalization is defined as:
the concentration of sense organs, nervous control, etc., at the anterior end of the body, forming a head and brain, both during evolution and in the course of an embryo's development.
(Google search)
Segmentation in biology refers to the division of some animal and plant body plans into a series of repetitive segments. This article focuses on the segmentation of animal body plans, specifically using the examples of the taxa Arthropoda, Chordata, and Annelida.
(Google search)
Deuterostomes (taxonomic term: Deuterostomia; meaning "second mouth" in Greek)[1][2] are any members of a superphylum of animals. It is a sister clade of Protostomia, with which it forms the Nephrozoa clade. (Wiki)
coe·lom
ˈsēləm/Submit
nounZOOLOGY
the body cavity in metazoans, located between the intestinal canal and the body wall
(Google search)
Actually, the correct answer is A. cephalization. Cephalization is the evolutionary tendency where nerve cells and sense organs are concentrated in the head region of an animal. This concentration of nervous tissue and sensory organs in the head allows for better coordination of sensory input and more efficient response to stimuli.
Segmentation refers to the division of an animal's body into repeating segments, like in worms or arthropods. Deuterostome is a term used to classify a particular developmental pattern in animal embryos, while coelom refers to a fluid-filled body cavity found in some animals. Neither of these options are related to the clustering of nerve cells in the head, so the correct answer is A. cephalization.