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Identify one of the key external difference between vertebrates and invertebrates.

A) Vertebrates are always radial symmetrical.

B) Invertebrates are always bilaterally symmetrical.

C) Invertebrates are always bilaterally symmetrical, while vertebrates could show either bilateral or radial symmetry.

D) Vertebrates are always bilaterally symmetrical, while invertebrates could show either bilateral or radial symmetry.

Answer :

Willybob12

The correct answer is D)

Vertebrates have a bilateral symmetry due to which their entire body is divided into right and left halves while the invertebrates either have radial symmetry or the bilateral symmetry. Therefore, option D is correct.

The other basic differences between the vertebrates and the invertebrates are that vertebrates have a spinal cord and a backbone while invertebrates lack them, vertebrates have well developed brain, lungs or gills in respiratory system and closed circulatory system.


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