In which of the following does the suffix create a word that has a different meaning than the root word?

Intestinal is correct. This is because “-al” changes intestines (noun) to intestinal (adjective), which means “relating to the intestines.”
Phalanges is incorrect. This is because the “-s” makes “phalange” plural.
Examined is incorrect. This is because the “-ed” makes “exam” past tense.
Ovaries is incorrect. This is because the “-es” makes “ovary” plural. (Change the “y” to an “i”).