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A spore which is produced by heterogamous fertilization and from which the sporophytic generation develops.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.



the resting zygote in lower plants that have an oogonium. The oospore has a considerable reserve of nutritive matter, which is used during sprouting, and a thick, multilayer wall, which provides protection from such unfavorable conditions as drought or cold. When the oospore sprouts, its nucleus divides with reduction.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.