Scientific illustration in manga style showing a cross-sectional view of a lotus pond. Above the water, detailed illustrations of green lotus leaves and pink lotus flowers. Beneath the water, a clear depiction of white lotus roots growing in the mud, highlighting the underground stem structure. The illustration should include botanical labels such as ‘Underground Stem’ for the lotus root and ‘Root Hairs’ for the fine roots attached to it. Vibrant colors, bold lines, and precise details, with a focus on educational clarity. Text at the top reads: ‘Is Lotus Root a Stem or a Root?’