📝 Multiple Choice Question
General-science
Identify the INCORRECT statement regarding invertebrates from the options given below.
A
They have open circulatory system as there is no organisation in the distribution.
B
They have radial or bilateral body symmetry.
C
They have a pair of solid nerve cords, situated ventrally and bearing segmentally arranged ganglia.
D
They possess a backbone and an internal skeleton.
Explanation
By pure biological definition, invertebrates completely lack a vertebral column (backbone) and an extensive internal bony skeletal structure, which are essentially the exclusive hallmarks of vertebrate animals.
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