what do all vertebrates have in common
What do all vertebrates have in common
Answer:
All vertebrates share common characteristics that distinguish them from other animals. Here are some key features that all vertebrates have in common:
Vertebral Column: One of the defining features of vertebrates is the presence of a vertebral column, also known as a spine or backbone. This bony structure provides support and protection for the spinal cord.
Notochord: During development, all vertebrates have a notochord, a flexible rod-like structure that runs along the back. In most vertebrates, the notochord is replaced by the vertebral column as they mature.
Dorsal Nerve Cord: Vertebrates have a dorsal nerve cord, which is part of the nervous system. This nerve cord typically develops into the spinal cord or brain in adult vertebrates.
Bilateral Symmetry: Vertebrates exhibit bilateral symmetry, meaning that the body can be divided into two nearly identical halves. This symmetry allows for efficient movement and sensory function.
Endoskeleton: All vertebrates have an endoskeleton made of bone or cartilage. This internal skeleton provides structural support for the body and protects internal organs.
Closed Circulatory System: Vertebrates have a closed circulatory system, where blood is contained within vessels and pumped by a heart. This system allows for efficient transport of nutrients and oxygen throughout the body.
These shared characteristics unite vertebrates as a diverse group of animals that includes fish, amphibians, reptiles, birds, and mammals.