Question

Advanced features of Vertebrates over Protochordata

Answer 1

Explanation:

Difference # Protochordates:

Notochord persists throughout life.

No cranium or vertebral column. ...

Atrium, the space in between pharynx and body wall, is present.

Endostyle is present except hemichordates. ...

Absence of neural crest cells in the development of nervous system.

Answer 2

Some advanced features of vertebrates over protochordates are:

• The notochord is either replaced entirely by the vertebral column or is present along with the vertebral column.

• The heart is divided into chambers and has RBC in the blood.

• Each verterbra has a distinct sex. The only exception is in the case of some fish .

• When fertilization takes place, the sperm and the ovum unite in the animal pole pathway.