Tsim, Secondary kev kawm ntawv thiab cov tsev kawm ntawv
Kev hloov kho ntawm tsob nroj nplooj
Txhua ib feem ntawm cov nroj tsuag kom tiav raws li nws yooj yim zog raws li nyob rau hauv cov yam ntxwv ntawm nws cov qauv. Tab sis cov hloov ntawm cov nplooj, raws li zoo li lwm yam uas tsim nyog lub cev, uas lawv thiaj yuav ntau thiab ntau dua. Feem ntau cov feem ntau lawv yog nyob ntawm seb kev nyab xeeb thiab kev loj hlob tej yam kev mob.
Kev hloov kho ntawm cov teb chaws sov nplooj
Nroj tsuag thiab noo equatorial forests kawm yooj yim heev - los ntawm tus yam ntxwv zoo thiab loj ntawm cov nplooj tuaj. Nyob rau hauv lub teb chaws sov kev nyab xeeb cheeb tsam ntawm ntoo ntaub ntawv nyob ib tug tseem ceeb txoj hauj lwm, ua nws tau mus ua neej nyob tsuas ib tug ntxoov ntxoo-thaiv lov tas vau thiab noj nyom. Cov nplooj tuaj ntawm cov nroj tsuag unusually loj thiab dav. Yuav ua li cas mus piav qhia txog xws li ib tug qauv? Qhov no yog hais tias ib tug ntawm lub zog ntawm qhov no yog qhov kev siv ntawm transpiration. Qhov no txheej txheem ntawm cov dej evaporation ntawm tus nto ntawm daim ntawv. Qhov loj hniav cheeb tsam, qhov ntau mob siab heev lub gaseous pauv nrog rau cov ib puag ncig. Nyob rau hauv ntub tej yam kev mob nws tsuas yog tsim nyog los tiv thaiv kom txhob tus txheej txheem ntawm lwj.
pos
Brambles - nws kuj yog ib tug kev hloov kho ntawm cov nroj tsuag nplooj. Lawv yog cov yam ntxwv ntawm cov neeg uas loj hlob nyob rau hauv arid thiab suab puam tej yam kev mob. Txhua leej txhua tus pom lub spines ntawm ib tug cactus. Qhov no yog nws cov nplooj. Qhov uas tsis muaj dej tej yam kev mob thaum transpiration txheej txheem yuav tsum tau nyoog, nws yog ib qho zoo tagnrho ntaus ntawv. Nrog xws li ib tug me me nto lamina thiab dej suab heev me ntsis.
Txawm li cas los, lub spines ntawm ib tug cactus thiab acacia - ib tug txawv variation ntawm cov nplooj. Yuav ua li cas yog qhov txawv? Peb acacia, hawthorn, blackthorn, barberry, thiab lwm yam zoo xws nroj tsuag pos yog hloov stipules, tsis cov ntaub ntawv. Lawv lub ntsiab muaj nuj nqi yog los tiv thaiv cov tshuaj tsw qab paj thiab qab zib txiv hmab txiv ntoo los ntawm kev noj ib tug ntau yam ntawm cov tsiaj.
koob
Kev hloov kho ntawm nplooj thiab koob yog tag nrho cov neeg sawv cev ntawm lub Department of gymnosperms. Txhua leej txhua tus nco ntsoov cov me nyuam kev txhiaj txhais txog cov plaub-tsob ntoo - "lub caij ntuj no thiab lub caij ntuj sov ntawm ib xim." Thiab tag nrho cov evergreen conifers yog lom zem ntau ua tsaug rau tus yam ntxwv hloov ntawm nplooj. Ib tug ntoo khaub lig seem lawv muaj ib puag ncig los yog ribbed zoo. Tej cov ntawv txheeb muaj ib tug me me rau thaj tsam, xws li cactus spines. Lawv stomata, los ntawm kev uas nkev pauv yuav siv sij hawm qhov chaw, yog immersed nyob rau hauv ib tug txheej thiab ib thooj ntawm daim ntawv. Qhov no thiaj li tus nqi ntawm cov dej evaporation. Nyob rau hauv lub caij ntuj no, cov formations zoo rau nws kaw nrog ciab, uas thiaj li transpiration yuav luag pes tsawg. Yog li ntawd, thaum ib lub sij hawm thaum tag nrho cov angiosperms los lawv cov nplooj nyob rau hauv lub caij ntuj no, coniferous ntoo thiab nroj yuav khav lush ntsuab kho kom zoo nkauj.
Nplooj suab puam nroj tsuag
Ciaj sia nyob rau hauv arid tej yam kev mob nyuaj nroj tsuag. Cov kev hloov kho mob los ntawm cov nplooj ntawm cov nroj tsuag? Lawv yuav tsum muaj xws li cov yam ntxwv nta uas yuav muaj sia nyob tus ceev kub hloov thiab ib tug tsis muaj noo noo. Yog li ntawd cov nplooj lawv yog feem ntau them nrog ib tug tuab txheej ntawm cov plaub hau los yog ciab txheej. Lawv tiv thaiv cov nroj tsuag los ntawm ntau noo noo poob. Yog lwm ntaus ntawv. Muaj ntau yam ntawm dryland ecosystems noog ib tug dej nyob rau hauv lub nyeem tas, fleshy nplooj. Ib qho piv txwv ntawm xws li ib tug kev hloov kho yuav pab raws li kev paam dlev, uas yog feem ntau diluted raws li ib tug houseplant, muaj kho thaj.
antennae
Yuav tau xav txog cov yam ntxwv ntawm cov nram qab no lub cev, cia peb nco ntsoov li cas hloov nplooj nyob rau hauv legumes. Yub feem ntau ntawm lawv yog cov ntev thiab nyias nyias, thiab cov txiv hmab txiv ntoo thaum siav tau loj, uas tsis pub kom lawv tau khaws cia nyob rau hauv ib tug upright txoj hauj lwm. Tab sis nws yog lub feem ntau lig rau tsim photosynthesis. Tej kev hloov kho ntawm daim ntawv nyob rau hauv taum mog? Ntawm cov hoob kawm, qhov no mustache. Yog li ntawd hloov ib tug neeg platelets ntawm puas ntawv. Nrog lawv pab tsob nroj clings mus rau ib tug them nyiaj yug, thiab raws li ib tug tshwm sim ntawm cov tsis muaj zog thiab nyias kav yog nyob rau hauv cov yam hauj lwm.
plaub ya ri
Yuav kom to taub yog vim li cas lub raum scale yog ib tug kev hloov kho ntawm daim ntawv, nws yog tsim nyog los nrog cov qauv ntawm lub teeb. Peb xav txog nws mus rau ib tug pa piv txwv Leeks. Nws noob, txawm lub fact tias yog nyob rau hauv lub hauv av, yog ib tug kev hloov kho ntawm lub sim saum nruab ntug ib feem ntawm cov nroj tsuag - txoj kev khiav. Nws yog ib qho yooj yim los ua pov thawj. Khiav muaj soj caum, nplooj thiab buds. Cov tib qhov chaw kuj muaj qhov muag teev. Nws soj caum yog hu ua tus basal phaj tiaj tus. Down los ntawm nws yoojyim ib Rev ntawm adventitious keeb kwm. Nyob rau sab saum toj ntawm ib tug ob peb hom ntawm nplooj. Hluas ntsuab thiab loj hlob los ntawm buds nyob rau hauv lub collum. Tus hluas thiab fleshy nplooj tau no zoo nyob rau hauv thiaj li yuav cia ya raws. Nrog kev pab los ntawm cov nroj tsuag nyob rau hauv uas lub noob yog tsim, underground tso ntuj qhuav heev, tsis muaj kub thiab lwm yam unfavorable phenomena. Ib tug muaj kev tiv thaiv los ntawm cov neeg kho tshuab kev puas tsuaj rau lub puab txheem qhuav teeb teev uas yog tseem yog ib tug kev hloov kho ntawm cov nplooj.
predatory nplooj
Kev hloov kho ntawm cov nplooj yog tseem heev txaus ntshai rau lwm nyob beings. Muaj yog ib tug tag nrho pawg ntawm cov carnivorous nroj tsuag. Lawv muaj peev xwm ntawm, thiab rau qhov kev siv ntawm tus txheej txheem ntawm photosynthesis, t. E. Yog autotrophs. Tab sis yog hais tias tus mob rau nws yuav tshwm sim muaj, lawv mus rau cov heterotrophic txoj kev ntawm kev noj mov. Nrog kev pab los ntawm hloov nplooj lawv ntes kab thiab zom lawv. Piv txwv li, ib tug tauj cog Sarracenia nplooj yog funnel uas rims lub qab nectaries. Lawv nyiam kab. Tuaj txog, tus neeg pib xaub raws cov npoo ntawm cov kev ua qab yias thiab cuab. Nyob rau hauv tas li ntawd, cov nplooj kuj tsim tshwj xeeb cov tshuaj, cov tshuaj tua kab Ruaj ntawm tag nrho cov ntau thiab tsawg. Saum toj no funnel ntawv curled nyob rau hauv daim ntawv ntawm ib tug hood. Qhov no tab tsis pub cov nag kom tau rau hauv, tov nrog digestive enzymes.
Los ntawm kev hloov kho ntawm cov nplooj yog mus tentacles thiab sundew, uas yog nyob rau hauv lub xaus ntawm goo. Nws attracts kab, uas noj nyob rau teb chaws thiab muaj cuab.
nplooj buds
Tag nrho cov nplooj yog vegetative kabmob. Nrog lawv pab, asexual tu tub tu kiv txheej txheem yog ua. Piv txwv li, yog tias nyias muaj nyias ib leaflet violets los ntawm neeg laus nroj tsuag thiab muab tso rau hauv ib lub taub ntim dej, tom qab ib co sij hawm, nws cov ntaub ntawv hauv paus. Tab sis nyob rau hauv ib tug xov tooj ntawm tsob nroj hais tawm txheej txheem sib txawv. Yog li, nyob rau hauv lub sab hauv tsev Kalanchoe raws tus ntug ntawm cov nplooj hniav yog ob lub raum, ntawm uas nws tus kheej-tsim tua. Lawv yuav luag tag nrho tsim: muaj ib tug me me paus thiab nplooj. Khib, lawv yuav ciaj sia nyob rau hauv tib lub peev xwm raws li ib tug neeg laus nroj tsuag. Xws li ib tug txheej txheem tseem hu ua nws tus kheej-replication.
Lub ntsiab lus kev hloov kho tsob nroj yoojyim loj. Cov pab kiag li lawm ua rau kom cov nqi thiab pab txhawb cov txheej txheem ntawm adaptation. Vim cov kev hloov uas yoojyim terrestrial nroj tsuag muaj peev xwm ua tau ib ntau yam ntawm climatic ib ncig chaw, txawv muaj ntau seem ntawm dej, kub thiab av zog. Nyob rau hauv tas li ntawd mus photosynthesis, transpiration thiab cellular ua pa, nplooj hloov kom lawv ua lwm yam tseem ceeb functions: nws yog kev tiv thaiv los ntawm txhom thiab txhua yam kev puas tsuaj, cov kev cai ntawm cov roj pauv thiab dej evaporation ntau ntau thiab heterotrophic kev noj haus.
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