Question

Advanced features of vetebrata over protochordata

Answer 1

hello!

these are the Advanced features of vetebrata over protochordata.,

1. notochord is replaced by a vertbral column
2. cranium is present
3. Endostyle is totally absent in the adult stages of vertebrates
4. Pharyngeal slits or clefts persist in some vertebrates
5. Chambered heart. RBC is present in the blood
6. Sexes’ are separate (dioecious) except in some fishes
7. During fertilization, the sperm unites with the ovum in the pathway of animal pole
8. Examples:   Agnathan to mammals

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