Question

Salient features of pteridophyta

Answer 1

Pteridophytes are the vascular Cryptogams. They are seedless and they are the simplest plants among the Tracheophytes (Plants having vascular tissues). Pteridophytes were world wide in distribution and abundant in the geological past. Today, they are best represented by the ferns. The non-fern pteridophytes are comparatively less in number. These plants are mostly small and herbaceous. They grow well in moist, cool and shady places where water is available.

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Answer 2

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➧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❭ They are the first & Simplest land plants.

⑥❭ Water is required for fertilization.

▶Ex:- Funaria, Riccia, Anthoceros, Notothylus & Sphagnum

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, Marsilea, Lycopodium & Equisetum

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