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Thallophyta, bryophyta and pteridophyta ...

Thallophyta, bryophyta and pteridophyta are called as 'cryptogams'. Gymnosperms and angiosperms are called as 'phanerogams'. Discuss why? Give one example of gymnosperm.

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The Thallophyta, bryophyta and pteridophyta are called as Cryptogams because representatives of theses groups have inconspicuous or hidden reproductive organs and seeds are absent.
Pheanerogams include gymnosperms and angiosperms. Representatives of theses groups have well differentiated reproductive tissue and the embryo with stored food. Embryo deevelops into seeds. Refer to Fig. 4.10. A Cycas (c) Pinus.
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