ROUND AND ROUND NEVER OFF FROM GR RIDDLES WITH ANSWERS TO SOLVE - PUZZLES & BRAIN TEASERS

A man and his son had a terrible car accident and were rushed to the hospital. The man died on the way, but the son was still barely alive. When they arrived, an old gray surgeon was called in to operate. Upon seeing the young boy, the surgeon said, I cant operate this is my son.

How is this possible? Did you answer this riddle correctly?
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Piano Did you answer this riddle correctly?
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Piano Did you answer this riddle correctly?
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Coconut Did you answer this riddle correctly?
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A king. Did you answer this riddle correctly?
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A tombstone Did you answer this riddle correctly?
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Tombstone Did you answer this riddle correctly?
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Tombstone Did you answer this riddle correctly?
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There was a bee on his report card Did you answer this riddle correctly?
YES  NO  

When you're eating a watermelon Did you answer this riddle correctly?
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Because he wasn't very bright Did you answer this riddle correctly?
YES  NO  

Oranges Did you answer this riddle correctly?
YES  NO  

Corn Did you answer this riddle correctly?
YES  NO  

Potato Did you answer this riddle correctly?
YES  NO  

Potatoes Did you answer this riddle correctly?
YES  NO