Question

What is the classification of phylum Chordata?

Answer 1

Characteristics of Phylum Chordata:

1. Notochord
2. A dorsal hollow nerve cord
3. Pharyngeal gill slits ( paired)

Classification of Phylum Chordata:

1. Urochordata or Tunicata

• The notochord is only present in the larval tail of Urochordata.
• Example - Ascidia

2. Cephalochordata

• The notochord extends from the head to the tail area and it is present throughout their lives.
• Example - Branchiostoma

3. Vertebrata

• During the embryonic period, the notochord is present.
• The notochord is replaced by a cartilaginous or bony spinal column in adulthood.
• Example - Birds, humans