What is the definition of cephalization in biology?
What is the definition of cephalization in biology?
cephalization, the differentiation of the anterior (front) end of an organism into a definite head.
What is cephalization and why is it important?
In zoology, cephalization is the evolutionary trend toward concentrating nervous tissue, the mouth, and sense organs toward the front end of an animal. Fully cephalized organisms have a head and brain, while less cephalized animals display one or more regions of nervous tissue.
What is cephalization Class 11?
Cephalization is the phenomena in which due to morphogenetic gradient the mouth, sense organs, and nerve ganglia are concentrated at the frontal end of the organism forming a head region.
What is cephalization biology quizlet?
Cephalization. means having “head” sense organs and nerves are in front of body.
Do all animals have cephalization?
All vertebrate animals qualify as highly cephalized organisms on account of their distinct heads, well-developed brains, elaborate nervous systems and complex thought processes.
What does the term cephalization mean Brainly?
Brainly User. Cephalization is an evolutionary trend in which, over many generations, the mouth, sense organs, and nerve ganglia become concentrated at the front end of an animal, producing a head region. This is associated with movement and bilateral symmetry, such that the animal has a definite head end.
Are all animals cephalized?
What is cephalization and which organisms generally exhibit it?
Cephalization describes the process by which organisms develop a distinct head. The head of a cephalized organism contains a concentrated group of nerves, or brain, that controls the rest of the organism, as well as specialized organs for consumption and perception, like mouths, eyes and ears.
What is cephalization and which organisms generally exhibit it quizlet?
What is cephalization? Which organisms generally exhibit it? the concentration of sense organs in the anterior or head region of an organism. Organisms with bilateral symmetry generally exhibit cephalization.
Do mammals have cephalization?
Cephalization in vertebrates, the group that includes mammals, birds, and fishes, has been studied extensively. The heads of vertebrates are complex structures with many features not found in close relatives such as the cephalochordates.