Fern Sorus And Spore Cases #18
by Frank Fox/science Photo Library
Title
Fern Sorus And Spore Cases #18
Artist
Frank Fox/science Photo Library
Medium
Photograph - Photograph
Description
Fern sorus. Fluorescence light micrograph of a sorus on the underside of a fern frond. A sorus is a cluster of spore-producing receptacles called sporangia. Each sporangium is packed with spores, which are the fern's reproductive cells. A rim of thick-walled cells, the annulus, functions to open and rapidly close each sporangium when the spores are mature, releasing them into the environment.
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February 25th, 2021
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