notochord
the thing that helps you live
Because it does not have a "back bone".
No, it is an invertebrate or non-chordate
Yes, the nerve cord is part of the chordate anatomy, but it is not a flexible rod that supports the back; rather, it is the notochord that serves as a flexible rod providing support. The notochord is a key characteristic of chordates during their development, offering structural support and serving as a precursor to the vertebral column in vertebrates. The nerve cord, which develops into the spinal cord, runs alongside the notochord and is responsible for transmitting nerve signals.
Yes, all chordates have a nerve chord running down their back and an earthworm has a nerve chord running down it's back therefore it is a chordate
The notochord of a vertebrate differs from that of an invertebrate because a vertebrates eventually turns into a back bone. Invertebrates just disappears.
Neural tube.
A flexible rod that supports a chordate's back is called a notochord. It is a key feature of chordates during their embryonic development and provides structural support and shape. In many vertebrates, the notochord is replaced by the vertebral column (spine) during development, but it still plays a crucial role in the development of the nervous system.
Yes, a dolphin is a chordate. Chordates are animals that possess a notochord, a dorsal hollow nerve cord, pharyngeal slits, and a post-anal tail at some point in their life cycle, all of which dolphins have.
Down the back is a structure called the Notochord. The structure is cartilaginous and over time turns in to bone. You still have some of this cartilage when your a child, but as you grow up it is all replaced with bone. Either side of the Notochord are somite that can migrate to make other tissues too.
Yes, a butterfly has no backbone because it is an insect. All insects do not have a back bone . a butterfly has an exoskeleton which means its on the outside and most exoskeletons don't have a back bone except a turtle.Read more: Is_a_Butterfly_an_Invertebrate
it develops them by ripping and when they 'knit' themselves back together they are stronger