What is this close-up picture? (WotsThat: Poppy seed pod surface)

Question

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

RustKnight · Accepted Answer

Poppy seed pod surface. The tiny holes arranged in a crown around the top of a poppy seed pod aren't just decorative—they're actually a built-in spice shaker that evolved to disperse seeds in a very specific way, flinging them out only when the plant is moved by wind strong enough to matter. This design is so efficient that it inspired the original design of pepper shakers, and some botanists think the pod's geometry might have even influenced salt and pepper dispensers throughout history.

Answer: Poppy seed pod surface

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