Question

Choose the correct answers from the alternatives given.
Which of the following is not one of the characteristics of a vertebrate?

• A. Radial symmetry
• B. Segmentation
• C. Extreme cephalization
• D. Closed circulation

Answer 1

The correct option is A Radial symmetry

Vertebrates display segmentation which is a feature of the body plans of a number of diverse animal groupings, including the chordates. Cephalization in vertebrates, the group that includes mammals, birds, and fishes, has been studied extensively. Vertebrates have a closed circulatory system. Closed circulatory systems have the blood closed at all times within vessels of different size and wall thickness. But vertebrates mostly have bilateral symmetry and not radial symmetry.

So, the correct option is, 'Radial symmetry'.