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Question

What is hidden reproductive organ this word has been used for Cryptogamae.and if there is hidden reproductive organ then how can naked embryo will be there bcz embryo r those which takes place after the fertilization so if there is hidden reproductive organ then there will be no embryo but it has been written that thallophytes ,the bryophytes and the pteridophytes have naked embryos

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Solution

We say cryptogamae have hidden reproductive organs because their reproductive structures we are not able to see as we can see the flowers of higher plants.They have archaegonium (female) antheridium (male) structures giving rise to gamets which fuse to form a zygote.But the structures are not easily distinguishable as the cones and flowers of higher plants.
The gametes produced by archegonium and antheridium will fuse to form a zygote which develops in to embryo.

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