What are the general characteristics of all vertebrates?
A. Include several animal phyla.
B. Have a backbone or spinal column.
C. Lack cephalization.
D. Include all chordates.
my answer is B is that correct
Yes.
Yes, your answer is correct. Vertebrates are characterized by having a backbone or spinal column, which sets them apart from invertebrates. This backbone is composed of individual bones called vertebrae, which provide support and protection for the spinal cord. Other characteristics mentioned in the options are not correct. For instance:
A. While vertebrates do belong to several animal phyla, not all animal phyla are included in the vertebrate group. Vertebrates belong to the phylum Chordata.
C. Vertebrates typically exhibit cephalization, which refers to the concentration of sensory organs and neural tissues in the head region. Therefore, vertebrates do not lack cephalization.
D. While it is true that all vertebrates are chordates, not all chordates are vertebrates. Chordates also include a few other groups like the lancelets and tunicates, which lack a backbone.