Question on: JAMB Biology - 2001
In man, the ability to roll the tongue is a variation classified as
A
anatomical
B
physiological
C
structural
D
morphological
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Correct Option: B
The ability to roll the tongue is a **morphological** variation.
* **Morphological** refers to the form and structure of an organism or any of its parts.
* Tongue rolling is a physical trait related to the shape and form of the tongue.
The other options are incorrect:
* **Anatomical** refers to the internal structure of the body which doesn't directly describe tongue rolling.
* **Physiological** refers to the function and processes of the body.
* **Structural** is related to the arrangement of parts, and while related to morphology, "morphological" is the better, more specific descriptor in this case.
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