The structures that resemble smiley faces are vascular bundles in a plant leaf. Each bundle contains xylem, which transports water, and phloem, which transports sugars. Surrounding bundle sheath cells support photosynthesis and transport functions. The face-like appearance is an example of pareidolia, where the human brain perceives familiar patterns, such as faces, in random arrangements. Want more interesting content like this ? Follow gravitonomy :) Via : Unknown No copyright infringement intended. Kindly DM for Credit/Removal/Collaboration :) #science #grass #xylem #plants #biology