Question

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Answer 1

The thallophyta, bryophyta and pteridophyta are called as ‘cryptogams’ because the reproductive organs of these groups are inconspicuous or hidden. Seeds are absent. On the other hand ‘Phanerogams’ include gymnosperms and angiosperms which have well differentiated reproductive tissue and the embryo with stored food. Their embryo develops into seed

Answer 2

Thallophyta, Bryophyta, and pteridophyta are called cryptogams because the reproductive organs of these groups are inconspicious or hidden. Seeds are absent. Gymnosperms and angiosperms are called phenerogams because they have well diffrentiated reproductive tissue and the embryo with stored food.

for secon question- They are called so because they bear naked seeds. gymnosperms: they ate known as naked plants because they bear naked seeds and the seeds are not covered with fruit. angiosperms: they are known as flowering plants