Question

what are cryptogamae? name any two group which come under cryptogamae

Answer 1

cryptogame is the sub lingdom of of the kingdom plantae which includes plants which do not flower in their life time. mosses,fern,liverworths are few examples of cryptogame

Answer 2

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Subkingdom Cryptogamae➫ Those kingdoms which are Flowerless & Seedless plants.

❱ It's Characteristics are:-═════════════════☟

◉ These are seedless & flowerless plants.

◉ These plants reproduce by producing spores.

◉ Reproductive organs are inconspicuous.

◉ Lower cryptogams don't have true Stem, Roots, Leaves & Vascular system.

➧Subkingdom Cryptogamae divided into three groups:-▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃⤵

❶❫ Thallophyta:-        ▬▬▬▬▬▬▬▬▬▬▬☟

①❭ Plants body remains in the form of Undifferentiated.

②❭ Vascular System is Absent.

③❭ Mode of nutrition is Phototrophic & Autotrophic.

④❭ Reproduction is both Sexual & Asexual.

⑤❭ Asexual reproduction takes place by Spore formation.

⑥❭ Fertilization is not followed by Embryo formation.

▶Ex:- Spirogyra, Ulva, Fucus, Volvax & Chara

❷❫ Bryophyta:-     ▬▬▬▬▬▬▬▬▬▬▬☟

①❭ Plant body is not differentiated into true roots, steam & leaves.

②❭ Non-vascular plant are not developed.

③❭ Fixation by rhzoids.

④❭ Gametophyte are the main plant.

⑤❭ Sex organs are multicellular.

⑥❭ Water is required for fertilization.

▶Ex:- Funaria & Riccia

❸❫ Pteridophyta:-     ▬▬▬▬▬▬▬▬▬▬▬☟

①❭ Plant body is differentiated into true roots, steam & leaves.

②❭ Vascular plant are developed.

③❭ Fixation by roots.

④❭ Sporophyte are the main plant.

⑤❭ They are the first truly Terrestrial & vascular cryptogams.

⑥❭ Water is needed for fertilization.

▶Ex:- Azolla & Dryopteris

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