Thallophyta, bryophyta and pteridophyta are called as cryptogams, gymnosperms and angiosperms are called as phanerogams. Discuss why? Write any one difference between monocotyledons and dicotyledons with example.
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. Their embryo develops into seeds.
Gymnosperms and angiosperms are called phenerogams because they have well diffrentiated reproductive tissue and the embryo with stored food. Their embryo develops into seeds.
| Monocot | Dicot |
| One cotyledon | Two cotyledons |
| Parallel vein in leaves | Reticulate vein in leaves |
| trimerous flower | tetramerous or pentamerous flower |
| Secondary growth absent | Secondary growth present |
| Adventitious root | tap root system |