Onion epidermal cells and human cheek epithelial cells?

Question

I have a question for my AP lab that my friend and I are having trouble answering. Any help will be greatly appreciated. Thanks.

What organelles (or structures) do onion epidermal cells possess that are NOT found in human cheek epithelial cells?

I'm pretty sure cell wall is right but I'm not sure about chloroplasts. This is because I don't know what part of the plant they are talking about when it says "onion epidermal cells". I know epidermal means "skin", but does it mean the skin of the onion or the skin of the leaf? And there could be other organelles too. I'm so confused. =(

Answer 1

I would not say chloroplasts because the epidermal cells are taken from the underground part of the onion which doesn't have chloroplasts. There is a rather large vacuole inside the onion cell, and cheek cells don't have that. Otherwise, cell wall is the only thing you would be able to observe.

Answer 2

Cell wall, I should say.