Question

Members of what subphylum of the chordates has these characteristics?

*an internal skeleton, a backbone, two pairs of appendages, a closed circulatory system, a heart with two or more chambers, and a large, central cavity containing vital organs*

Answer 1

Members of the subphylum Vertebrata within the phylum Chordata possess the characteristics described.

Step-by-step explanation:

The characteristics described - an internal skeleton, a backbone, two pairs of appendages, a closed circulatory system, a heart with two or more chambers, and a large, central cavity containing vital organs - are found in members of the subphylum Vertebrata within the phylum Chordata.

Vertebrates, such as fish, amphibians, reptiles, birds, and mammals, possess these features. They have an internal bony or cartilaginous skeleton, a backbone made up of vertebrae, two pairs of appendages (sometimes modified into different structures, like wings or fins), a closed circulatory system with a heart having multiple chambers, and a coelom containing vital organs.