k Tropical fern leaf, LM Tropical fern frond. Light micrograph LM. Transverse section through the frond of a tropical fern. A central vascular bundle meristele with central xylem tissue red surrounded by phloem lblue is visible. A trophophyll frond is a vegetative leaf analogous to the typical green leaves of seed plants that does not produce spores, instead only producing sugars by photosynthesis. A sporophyll frond is a fertile leaf that produces spores borne in sporangia that are usually clustered to form sori. Magnification x25 when printed at 10 centimetres wide., Photo by STEVE GSCHMEISSNERSCIENCE PHOTO LIBRARY Stock Photo - Afloimages
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Tropical fern leaf, LM Tropical fern frond. Light micrograph  LM . Transverse section through the frond of a tropical fern. A central vascular bundle  meristele  with central xylem tissue  red  surrounded by phloem  lblue  is visible. A trophophyll frond is a vegetative leaf analogous to the typical green leaves of seed plants that does not produce spores, instead only producing sugars by photosynthesis. A sporophyll frond is a fertile leaf that produces spores borne in sporangia that are usually clustered to form sori. Magnification: x25 when printed at 10 centimetres wide., Photo by STEVE GSCHMEISSNER SCIENCE PHOTO LIBRARY
RM

Tropical fern leaf, LM

Tropical fern frond. Light micrograph (LM). Transverse section through the frond of a tropical fern. A central vascular bundle (meristele) with central xylem tissue (red) surrounded by phloem (lblue) is visible. A trophophyll frond is a vegetative leaf analogous to the typical green leaves of seed plants that does not produce spores, instead only producing sugars by photosynthesis. A sporophyll frond is a fertile leaf that produces spores borne in sporangia that are usually clustered to form sori. Magnification: x25 when printed at 10 centimetres wide., Photo by STEVE GSCHMEISSNER/SCIENCE PHOTO LIBRARY

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