50.0 MB (1.5 MB compressed)
5120 x 3413 pixels
43.4 x 29.0 cm ⏐ 17.1 x 11.4 in (300dpi)
MARTIN OEGGERLI / SCIENCE PHOTO LIBRARY MARTIN OEGGERLI / SCIENCE PHOTO LIBRARY
Bromelia sp. pollen grains, scanning electron micrograph (SEM). Pollen grains are reproductive structures produced by the male parts of flowering plants. Bromelia is an epiphyte, a plant that derives moisture and nutrients from the air and rain. It usually grows on another plant, but is not parasitic.
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