A living fossil is ....... | vedclass

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(D) living fossil is an organism that has remained essentially unchanged from earlier geologic times and whose close relatives are usually extinct. $C

Vedclass · Accepted Answer

All of the above

Vedclass · Answer

(D) living fossil is an organism that has remained essentially unchanged from earlier geologic times and whose close relatives are usually extinct. $Cycas$ is a gymnosperm often referred to as a living fossil due to its primitive characteristics. $Ginkgo$ $biloba$ is the most classic example of a living fossil,as it is the only surviving species of its entire division. $Psilotum$ is a pteridophyte that is also considered a living fossil because it exhibits primitive features similar to extinct vascular plants. Therefore,all the given options are examples of living fossils.

List-$I$	List-$II$
$(a)$ Spirogyra	$(i)$ Dominant diploid sporophyte vascular plant,with highly reduced male or female gametophyte
$(b)$ Fern	$(ii)$ Dominant haploid free-living gametophyte
$(c)$ Funaria	$(iii)$ Dominant diploid sporophyte alternating with reduced gametophyte called prothallus
$(d)$ Cycas	$(iv)$ Dominant haploid leafy gametophyte alternating with partially dependent sporophyte

$A$ living fossil is .......

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