Answer :
Final answer:
The choroid and ciliary body are both part of the vascular tunic of the eye.
Explanation:
A shared characteristic of the choroid and ciliary body is that they are both part of the vascular tunic of the eye. The vascular tunic, also known as the uvea, comprises the choroid, ciliary body, and iris. It is responsible for providing a blood supply to the eyeball and controlling various eye functions.
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