(i) Cryptogams are the flowerless and seedless plants.
e.g. (a) Selaginella (b) Spirulina
(ii) Plants producing naked seeds are gymnosperms. e.gi (a) Cycas (b) Pinus
(iii) Flowering plants are angiosperms e.g. (a) Rose (Rosa indica)
(b) Maize (Zea mays)