Sure, we all know a tomato is technically a fruit and that rhubarb is actually a vegetable, but do you know why?

In the video above by SciShow, we get a refresher on grade-school science and re-learn exactly what differentiates fruits from vegetables.

Of course, when it comes to cooking, these rules often get thrown out the window. According to the Mayo Clinic, vegetables are often classified as such when they aren’t very sweet. Some examples include corn, zucchini and green beans — all of which are botanically fruit.

And the mix up goes far beyond basic fruits and vegetables. If you really want to confuse your friends, ask them to name all the different types of berries (hint: strawberries don’t fit in here, but nuts and grapes do).

Whatever you choose to call your produce, just make sure you’re eating enough of it. The Canada Food Guide recommends adults aim for seven to ten servings a day for a healthy diet.

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