write a short note on notochord.
Answers
Explanation:
a cartilaginous skeletal rod supporting the body in all embryonic and some adult chordate animals.
Hi Mate,
a notochord is a primitive beginning to the backbone. it appears in embryos as a small stretchable rod made from cells from the mesoderm, which is one of the three layers of cells of embryos. notochords are only found in the phylum chordata, a group of animals that includes humans. Infact, it is the defining feature of that particular phylum. notochords, and further more backbones, are what separate us from the most primitive living creatures that we encounter.
the notochords is oriented head to the tail and is found between the digestive tube and the nerve cord. Since it is composed of special tissue, it allows for skeletal support of the organism. in certain chordates, like the lemprey and the sturgeon, the notochord remains there for life points in vertebrates, such as humans, a more complex backbone appears with only portions of the notochord remaining points as our backbone fully forms, the this in our back is where the pieces of notochord are found as a sort of gelatinous material.
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