Question

Characteristics of urochordata and cephalochordata

Answer 1

Answer:

Subphylum Urochordata -

• The notochord is confined to tail.
• They have no true brain or skull.
• They have a tunic surrounding on their body.
• Because of this they are also called tunicata.
• They are exclusively marine.
• They are hermaphrodite.
• Example - Ascidia, Salpa, Doliolum.

Subphylum Cephalochordata -

• The notochord extend the entire length of their body.
• The notochord is persistent throughout their life.
• They have no true brain or skull.
• They have fish like body.
• They are exclusively marine.
• The sexes are seperate.
• Example - Branchiostoma.

They are together called as Prortochordates.