Ib tug ntau feature ntawm gymnosperms thiab angiosperms yog ... Tej yam tshwm sim ntawm gymnosperms thiab angiosperms

Nroj tsuag - ib tug zoo nkauj ntawm lub biomass ntawm peb ntiaj chaw. Yog tsis muaj lawv nws yuav tsis yooj yim sua lub hav zoov ntawm tej tsiaj los yog fungi, los yog tib neeg. Lawv yog cov heev txawv, muaj ib tug extraordinary muaj ntau haiv neeg ntawm hom thiab cov cia li ntaus nws grandeur thiab magnificence. Txawm li cas los, tsis yog txhua txhua cov nroj tsuag muaj cov tib zoo. Muaj ib tug complex txheej txheem ntawm evolutionary transformation, muaj kev tswj kom yoog thiab ciaj sia tsuas yog tus feem ntau pheej, txhob kaw favorably txheej txheem. Chief ntawm lawv, hais tias tus thawj nyob rau hauv tus naj npawb, yog ob tug pab pawg. Nws yog lawv peb xav txog hauv qab no.

General yam ntxwv ntawm cov nroj tsuag nceeg vaj

Cov nroj tsuag feem ntau xa mus cov kab mob uas hais tias tau ob peb no:

• unlimited kev loj hlob thoob plaws hauv lub neej;
• kev siv ntawm tus txheej txheem ntawm photosynthesis (autotrophic txoj kev ntawm lub zog);
• taag txoj kev ntawm lub neej;
• muaj peev xwm mus rau extract oxygen.

Rau hnub tim, muaj txog 350,000 txawv mej zeej ntawm lub nceeg vaj. Lawv muaj kev cuam tshuam rau ntau haiv neeg ntawm lub neej cov ntaub ntawv thiab yoog mus rau lub tej yam kev mob ntawm cov hav zoov. Tag nrho cov ntawm lawv yog muab faib ua tej pab pawg thiab taxa.

kev faib

Cov nroj tsuag lub nceeg vaj faib rau hauv ob tug loj subkingdoms: siab thiab qis. Txhua yam ntawm lawv muaj ob peb txawv taxonomic units:

1. Lower cov nroj tsuag uas muaj los ntawm algae, uas yog muab faib mus rau hauv cov chav kawm ntawv. Lub ntsiab sib txawv - tsis muaj ib tug lub cev, yog kabmob.
2. Ntau dua cov nroj tsuag comprise cov nram qab no kev sib cais: ferns, mosses, horsetails, qws mosses, gymnosperms, angiosperms.

Lawm, txhua tus ntawm cov taxa yog tseem me me units hauv nws tus kheej: chav kawm ntawv, kev txiav txim, cov tsev neeg, genera thiab hom. Qhov tseem heev heev thiab muab los ntawm lub tag nrho - angiosperms, los yog flowering nroj tsuag. Txawm li cas los, nws tsis yog ib txwm. Ib zaug rau lub ntiaj chaw twb yeej los ntawm spore, ces - gymnosperms.

Muaj cov cim qhia ntawm gymnosperms thiab angiosperms, uas tso cai rau kom paub qhov txawv lawv los ntawm lwm tus neeg thiab to taub hais tias yog vim li cas rau lub predominance tshaj tag nrho lwm leej lwm tus. Cia peb xav txog lawv nyob rau hauv ntau yam hauv qab no.

Cov tsos mob ntawm gymnosperms

Qhov no department yog heev nthuav thiab tseem ceeb heev rau lub neej ntawm cov tag nrho lub ntiaj chaw. Gymnosperms sawv cev los ntawm ntau cov loj cov chav kawm:

1. Noob ferns.
2. Sagovnikovye.
3. Conifers.
4. Bennetitovye
5. Ginkgo.
6. Gnetalians.

Tag nrho huvsi muaj txog 800 hom sib txawv. Ib tug ntau feature ntawm gymnosperms thiab angiosperms yog obviously reflected nyob rau hauv lub title feature: hauv lub xub ntiag ntawm lub noob, nyob rau lub embryo tsim. Txawm li cas los, ib yam yuav tsum tau hu ua ib tug txawv, vim hais tias cov noob no sib txawv.

Ib tug ntau feature ntawm gymnosperms (tag nrho cov tsis muaj kev zam) yuav hu ua txoj kev loj hlob ntawm lub noob nyob rau hauv lub qhov qhib flake cones. Yog li, nws yog zoo li ib tug liab qab, uas yog vim li cas rau lub npe ntawm lub tuam tsev.

Koj yuav tau xaiv ib tug ob peb yam uas muaj cov neeg sawv cev gymnosperms:

1. Cov lawv muaj tsuas yog cov ntoo thiab shrubs, herbaceous ntaub ntawv yog tsis tuaj kiag li.
2. Feem ntau ntawm cov nplooj yog hloov dua siab tshiab rau hauv nyias koob, them nrog tuab cuticle.
3. Conductive system sawv cev albuminoid hlwb thiab sab cib hlab, hlab ntsha tsis tuaj kawm ntawv.
4. Phev tshais, nqa los ntawm cov cua.
5. Nroj tsuag dioecious (dioecious).
6. Tus txheej txheem ntawm fertilization thiab noob txoj kev loj hlob yuav siv sij hawm txog li ob lub xyoos.
7. Endosperm embryo haploid txheej chromosomes, vim hais tias fertilization yooj yim.

Tshwj xeeb ntau haiv neeg cov gymnosperms conifers mus txog. Nws yog lawv uas tshwm sim tawm lub ib thooj ntawm cov ntoo nyob rau hauv ntau forests ntawm peb ntiaj chaw. Piv txwv ntawm cov nroj tsuag yog:

• larch;
• fir;
• spruce;
• ntoo thuv;
• cedar;
• Thuja thiab lwm tus neeg.

Tej yam tshwm sim ntawm flowering nroj tsuag

Lub fact tias ib tug ntau feature ntawm gymnosperms thiab angiosperms yog lub xub ntiag ntawm cov phev, cov tau ua ib tug ntawm cov yog vim li cas vim li cas lub flowering tau ntau ntau. Tom qab tag nrho, lawv muaj nti tiv thaiv noob pericarp thiab sis plawv hniav ntawm cov txiv hmab txiv ntoo, ua rau nws invulnerable rau cov huab cua puag.

Nyob rau hauv tas li ntawd mus rau qhov feature muaj thiab ib tug ob peb tseem ceeb thiab tseem ceeb cov yam ntxwv ntawm angiosperms:

1. Muaj yog kom meej meej ua kev system, muaj raws ntawm cov hlab ntsha.
2. Lub neej ntaub ntawv uas muaj los ntawm tag nrho cov hom; ntau yam ntawm cov ntoo, lov tas vau thiab tshuaj ntsuab yuav ua rau nws tau los khom nyob rau hauv tej qhov chaw.
3. Ob chav fertilization, uas ua rau nws tau tsim lub triploid endosperm. Cov txheej txheem no tshwm sim sai heev.
4. Pollination yog tau tsis tsuas cua, tab sis kuj kab, tsiaj txhu, thiab lwm yam kev ntawm yus tus kheej-pollination.
5. Chief generative hloov khoom nruab nrog, muab ib tug lossis loj kom zoo dua - ib lub paj.

Nws yog tus yau pab pawg neeg nyob rau hauv evolutionary lus, flowering thiab tswj los mus ua tus tshaj plaws hnyav thiab heev heev. Lawv tus xov tooj yog nearing 250 txhiab hom. Tag nrho cov no ua tau vim lub tshaaj thiab kev loj hlob ntawm kev tshuaj ntsuam genetic nta piav no.

Tej yam tshwm sim ntawm gymnosperms thiab angiosperms zoo sib xws

Nws tseem yog ib qho feature ntawm gymnosperms thiab angiosperms yog qhov tseeb hais tias rau yug me nyuam lawv yuav tsis tau dej. Qhov no distinguishes lawv los ntawm lub spore, uas yog heev nyob rau dej.

Tsis tas li ntawd, nws yuav muab sau tseg tias ib tug ntau feature yog lub angiosperms thiab gymnosperms zoo kev loj hlob ntawm lub vegetative kabmob. Qia, nplooj thiab keeb kwm yog ib qho tseem ceeb nyob rau hauv lub neej ntawm tus kab mob. Raws li nyob rau hauv tus thawj thiab tus thib ob pab pawg neeg ntawm cov tsos mob no tshwm sim zoo heev thiab kom meej meej.

Lwm kev zoo sib thooj - lub tsim ntawm loj hav zoov chaw, cov pej xeem ntawm loj heev ib cheeb tsam thiab dominance nyob rau hauv lub ntiaj teb no ntawm lwm cov nroj tsuag. Cuab thiab indisputable kom zoo dua ntawm ob departments - lub npaug ntawm noob nrog saib xyuas. Tom qab tag nrho, yog hais tias muaj yog ib tug xeeb leej xeeb ntxwv, ces tus me nyuam hauv plab muaj teeb meem loj reserves ntawm lub hwj chim rau cov thawj lub sij hawm ua ntej germination. Spore xws zoo yog tsis, li ntawd, lawv yuav ciaj sia taus txo dramatically.

Ib tug ntau feature ntawm gymnosperms thiab angiosperms yog lub peev xwm ua kom muaj tau. Thaum xub thawj nws cones nrog noob, lub thib ob - sib txawv raws li tus hluas thiab qhuav. Qhov no ua rau nws tau dispersal ntawm cov noob los ntawm txhais tau tias ntawm cov noog.

Txawv ntawm gymnosperms thiab flowering

Nyob rau hauv tas li ntawd, muaj zoo sib xws thiab sib txawv ntawm cov loj departments ntawm cov nroj tsuag lub nceeg vaj. Cov no yog cov cim ntawm gymnosperms thiab angiosperms, uas paub qhov txawv lawv los ntawm txhua lwm yam thiab piav txog cov zauv superiority ntawm ib tug tshaj lwm yam.

Koj muaj peev xwm xaiv ib tug ob peb yooj yim cov ntsiab lus:

1. Lub sij hawm rau fertilization thiab tu tub tu kiv, tus tsim ntawm ib tug tshiab kab.
2. Txoj hauj lwm ntawm lub noob ntawm cov nroj tsuag (qhib los yog kev ruaj ntseg).
3. Qhov kuaj pom los yog tsis tuaj kawm ntawv ntawm ntau yam lub neej cov ntaub ntawv.
4. Cov kev pollination.
5. Tus nqi nyob rau hauv lub evolution ntawm cov tsiaj.
6. Lub lom luag hauj lwm nyob rau hauv qhov thiab tus nqi rau tib neeg.

Phylogenetic tshwj xeeb tshaj yog gymnosperms

Yog hais tias peb tham txog lub keeb kwm ntawm gymnosperms, nws yog tsim nyog los xa mus rau lub Devonian lub sij hawm, uas yog, mus nrhiav txog 370 lab lub xyoo dhau los. Nws yog ces hais tias lawv muaj kev tswj kom oust lub ferns, mosses, horsetails thiab qws mosses, uas twb tau ib feem rau ntau lab xyoo.

Lub ntsiab yog vim li cas rau qhov no - kev ywj pheej los ntawm cov dej thaum lub sij hawm yug me nyuam thiab xeeb leej xeeb ntxwv tsim. Niaj hnub no, muaj ntau yam ntawm cov feem ntau ancient ntaub ntawv ntawm cov tu noob gymnosperms, txoj kev ua lub active cia ntawm thee. Txawm li cas los, muaj kuj yog ib tug ntau yam ntawm tshiab cov ntaub ntawv. Nyob rau hauv tas li ntawd, kom txog rau thaum tam sim no lub npe hu ob peb hom pines, ginkgo, hnub nyoog ntau txhiab xyoo.

Thaum lub sij hawm, lub gymnosperms tsis tau mus tsim rau tus uas twb muaj cov tsiaj thiab cov noog los xyuas kom meej qhov qub pub. Qhov no yog ib tug ntawm cov yog vim li cas uas tau hloov zuj zuj thiab tau ntau ntau opportunists-flowered.

angiosperm phylogeny

A tus hluas pab pawg neeg ntawm cov nroj tsuag, cov tsos ntawm uas hnub los ntawm qhov kawg ntawm lub Jurassic lub sij hawm. Advanced nta uas peb hais los saum no, tso cai rau tus neeg sawv cev ntawm lub tuam tsev khom nyob rau hauv tag nrho cov climatic ib ncig chaw thiab mus rau tus thawj.

Nws yog ib qho tseem ceeb uas nrog cov emergence thiab dispersal ntawm angiosperms yog txaus pub tau ob tug tsiaj thiab cov noog. Thiab niaj hnub no, cov neeg tsis tau nyob tsis khoom noj uas muab peb nrog cov nroj tsuag. Tom qab tag nrho, cereals, zaub, berries thiab lwm yam - nws yog flowering. Yog li ntawd, mus rau lawv peb tshuav peb lub neej.

Tus nqi thiab lom lub luag hauj lwm ntawm cov nroj tsuag

Yog hais tias peb tham txog qhov tseem ceeb ntawm lub ob departments, cov feature ntawm gymnosperms thiab angiosperms - muaj peev xwm mus nqa tawm photosynthesis thiab tsim ib tug lossis loj npaum li cas ntawm cov pa rau ua pa ntawm tag nrho cov nyob quavntsej. Thiab conifers, thiab flowering nroj tsuag nyob cheeb tsam lossis loj ntawm av. Nws tireless ua hauj lwm lawv ua tsis tau tsuas yog cov pa, tab sis kuj nqus cov pa roj carbon dioxide, rescuing neeg los ntawm lub tsev cog khoom nyhuv. Lawv yog cov producers ntawm cov organic teeb meem. Tsaug rau tag nrho cov lwm yam nroj tsuag nyob beings rau lub ntiaj chaw, yog li ntawd rau overestimate lawv lub luag hauj lwm nyob rau hauv cov xwm yog ib qhov nyuaj.