Any of a subphylum (Vertebrata) of chordates consisting of animals (such as mammals, birds, reptiles, amphibians, and fishes) with a bony or cartilaginous spinal column that replaces the notochord.
The vertebrates are frogs and fish.
What are the characteristics of vertebrates?
- The anatomy of vertebrates is strikingly similar, with the presence of a vertebral column, gastrointestinal tract, and spinal cord.
- The notochord develops into a vertebral column, with the vertebrae on the dorsal side.
- The presence of the central nervous system is an important indicator. The spinal cord's anterior nerve tube expands into the brain.
- Jaws can be found in some vertebrates. Jawless species are included in the order of vertebrates.
- The internal skeleton facilitates the distribution of various muscle attachment nodes.
Why frogs and fishes are vertebrates?
- Frogs and fish are both members of the phylum Chordata and the subphylum Vertebrata.
- Frogs and fish, like humans, have a spinal cord and a backbone.
- Furthermore, all chordates have bilateral symmetry.
Thus, we can conclude that Options B and D are correct.
You can learn more about vertebrates here:
https://brainly.com/question/1363266
#SPJ2
