Ib zaug, pteridophyta tau suav tias yog nws tus kheej phylum, txawm tias tam sim no lawv suav tias yog ib pawg ntawm cov txheeb ze sib txawv nrog cov poj koob yawm txwv. Qhov ntawd ua rau pteridophyta yog ib pawg paraphyletic, ib qho muaj ntau phyla. Cov pab pawg no suav nrog ferns, horsetails, clubmosses, spikemosses, thiab quillworts.
Pteridophytes cais li cas?
Hint: Tus pteridophyte yog cov nroj tsuag tsis muaj kab mob vascular nrog xylem thiab phloem. Raws li qhov xwm txheej thiab kev sib raug zoo ntawm nplooj thiab qia vascular anatomy thiab txoj hauj lwm ntawm sporangia, lawv tau muab faib ua plaub chav kawm tseem ceeb - Psilopsida, Lycopsida, Sphenopsida thiab Pteropsida.
Pteridophytes faib?
Pteridophyta (pteridophytes) Kev faib ntawm lub nceeg vaj cog, suav nrog cov vascular cryptogams. Lawv yog cov nroj tsuag tsis muaj paj nthuav tawm ib qho kev sib hloov ntawm 2 tiam neeg thiab tsis sib xws.
Tus yam ntxwv ntawm phylum Pteridophyta yog dab tsi?
Cov yam ntxwv tseem ceeb ntawm Pteridophytes yog raws li hauv qab no: Lawv yog tsis muaj noob, vascular nroj tsuag uas qhia qhov tseeb hloov ntawm tiam Tsis tas li ntawd, cov sporophyte muaj tseeb cov hauv paus hniav, stems thiab nplooj. Lawv yug los ntawm spores, uas yog tsim nyob rau hauv sporangia. Lawv yuav yog homosporous lossis heterosporous.
Pteridophytes yog leej twg muab piv txwv?
Pteridophytes yog cov nroj tsuag vascular thiab muaj nplooj (lub npe hu ua fronds), cov hauv paus hniav thiab qee zaum muaj tseeb stems, thiab tsob ntoo ferns muaj tag nrho cov pob tw. Piv txwv suav nrog ferns, horsetails thiab club-mosses.
