What is this close-up picture? (WotsThat: Oak leaf)

Question

What object is shown in this zoomed-in close-up photo?

CinnabarLine · Accepted Answer

Oak leaf. Oak leaves have a special network of veins that helps them survive droughts by controlling water loss. Each species of oak has uniquely shaped leaves, making them a reliable way to identify which type of oak tree you're looking at.

Answer: Oak leaf

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