"Mi papa come pasta."
Technically your answer is correct.
papa (or patata)- potato
papá - dad
Without the accent mark, it means potato.
So if I wanted to say "My dad is a potato", would it be "Mi papá es una papa"?
And with the only difference being the accented a, is papá pronounced with a soft pah followed by a strong pa! whereas papa would be two successive soft pah pah?
The pronunciation rules in Spanish are a bit complicated but if I remember correctly, the accent defaults to the second to last syllable for words that end with a vowel. If the accent is on a different syllable, the word needs an accent mark, as with papá.
Papa is pronounced PA-pa. Papá is pronounced pa-PA.