Usage History of 'gametophytes'

The following chart shows how frequently 'gametophytes' appeared in printed materials over time. For example, the word 'gametophytes' occurred 6 times in books in 1890 and 1,702 times in 2008. From 1890 to 2008, the word 'gametophytes' was used a total of 123,564 times in books scanned by Google. See Reference: Google Ngram project.

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