Which of the following is a living fossil?

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(A) living fossil is an extant taxon that closely resembles related species known only from the fossil record. Among the given options,$Cycas$ is cons

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Cycas

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(A) living fossil is an extant taxon that closely resembles related species known only from the fossil record. Among the given options,$Cycas$ is considered a living fossil because it has remained morphologically unchanged over millions of years and represents an ancient group of gymnosperms. $Algae$ is a broad group of photosynthetic organisms,$Saccharomyces$ is a yeast (fungus),and $Spirogyra$ is a green alga; none of these are classified as living fossils.

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