KumiswaIsayensi

Monocots futhi dicots: uyini umehluko?

Iqembu angiosperms flora zingahlukaniswa zibe monocots futhi dicots, ezingafani ikakhulukazi isakhiwo umbungu. Nokho, lezi zitshalo abe amakilasi kanye nezinye umehluko isakhiwo vegetative futhi izitho okuzala.

Class Dicotyledons, noma Magnoliopsidy: isakhiwo isitshalo futhi incazelo emfushane yabo

Kuze kube manje, isigaba ubhekwa mikhulu, ngakho-ke kuhlanganisa 200-000 zilwane. abameleli balo eziningi izici ezithile kakhulu ehlukile.

Dicotyledons amelwa izinhlobo ezihlukene - ukuthi nezihlahla, kanye namakhambi. Ngo zinhlobo bok abe ungqimba sasivumela obukhulu cambium empandni - indwangu ekhethekile eqinisekisa ekukhuleni kwayo ububanzi. amahlamvu isitshalo kungaba alula nanzima, kodwa cishe zonke izinhlobo, bona Cherenkov - sessile leaf blades aziyona into evamile salokhu ikilasi. Amarekhodi venation ezimweni eziningi net. Uhlelo impande advantageously induku - has a main, impande main, ezimila kusukela ohlangothini, ka Ubukhulu ezincane.

Esinye isici - kuba isakhiwo kwezitho okuzala. Ezinhlotsheni eziningi zezinto eziphilayo kufanele izimbali ezinkulu ngemibala egqamile. Banezinhliziyo perianth double (sepals kanye amacembe) izimbali ikakhulukazi five- noma emine membered. izitshalo Dicotyledonous zivame kakhulu impova izinambuzane.

Futhi-ke, kuba isici kakhulu isakhiwo umbungu, okuyinto has amabili ohlangothini cotyledons. By the way, nalesi sici futhi ezihambisana igama ekilasini.

Dicotyledons: lwezinhlobo ezivame kakhulu

Lesi sigaba iqukethe inombolo omkhulu izinhlobo afakiwe ukulethwa imikhaya amawaka, anamakhulu mathathu eziningana. Esaziwa kakhulu lawa okulandelayo.

Cruciferous - nabameleli bayo zabiwa ikakhulukazi Nenkabazwe planethi. Iningi zinhlobo zayo - isimo aluhlaza noma nezihlahla encane. Wonke umuntu ejwayelene abameleli ezinjalo crucifers ezifana iklabishi, isithombo, horseradish, turnips, lwesinaphi isithombo.

Umkhaya Pink ihlanganisa izihlahla, izihlahla kanye izitshalo herbaceous, okuyinto ngokuyinhloko kwasakazwa isimo sezulu sifudumele nakwezifudumele. Ngokwesibonelo, zasendle abadumile wasukuma rose miniature kukhona nje ngesikhathi leli qembu. Lihlanganisa iningi izihlahla zezithelo kanye nezihlahla, kuhlanganise lihhabhula, pere, cherry, Rowan, okusajingijolo, cherry, ijikijolo.

Umndeni imidumba - ezakheke nezihlahla bok zabiwa ikakhulukazi emazweni ashisayo nakwezifudumele notshani uthanda sezulu esipholile ngaphezulu ngisho cool. Zonke amalungu eqembu zinezikhathi ethize phehla "papilionaceous" uhlobo. Leli qembu lihlanganisa izitshalo elandelayo eyaziwa: peas, ubhontshisi, alfalfa, ubhontshisi, soy. By endleleni, abanye zinhlobo okhuthele Umjikelezo we-nitrogen.

Class Monocots: incazelo emfushane

Leli qembu ikakhulu herbaceous izitshalo - nezihlahla kuwo ezingajwayelekile kakhulu. sifanamsindvo yabo ngokuvamile aqukethe cambium ngakhoke ayikwazi ukukhula ukujiya. Amapheshana - elula, ne imiphetho ebalulekile. Sinenkosi stem futhi unamathele stem emaphethelweni lamina, yingakho zibizwa kanjalo amahlamvu sessile. Venation ezimweni eziningi, parallel noma arcuate.

Esinye isici - a uhlelo impande lunemicu engenalo impande main. Umbungu has cotyledon eyodwa kuphela, futhi njengoba kufakazelwa igama ekilasini.

Iningi monocots is impova umoya. Ngakho-ke, izimbali zabo - amancane, dim, perianth, iningi emithathu membered.

abameleli esivamile leli qembu - okusanhlamvu: ukolweni, oats, ummbila, irayisi nezinye.

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