Question

Which of the following statement is incorrect regarding Protochordata?

• A. Protochordates are marine animals.
• B. They are triploblastic.
• C. The organisms belonging to this group are bilaterally symmetrical.
• D. Notochord is present throughout the life span.

Answer 1

The correct option is D Notochord is present throughout the life span.

The main characteristics of the phylum Protochordata are:

• Protochordates are marine animals.
• The organisms belonging to this group are bilaterally symmetrical.
• They are triploblastic (three germ layers) and have a coelom (body cavity).
• They have a long rod-like support structure called the notochord. It is present at certain stages during their lives and not throughout their life span.

Hence, the correct option is D.