2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Cotyledons Page 2 Janet Grabowski PMC Tus Thawj Saib Xyuas Yog tias koj xav khawb me ntsis, dicots muaj taproot system, nrog ib lub hauv paus loj ntawm cov nroj tsuag thiab cov hauv paus me me uas ceg tawm ntawm nws raws li qhia ntawm cov nroj tsuag duab rau sab laug.
Puas dicots muaj lub hauv paus tseem ceeb?
Dicot cag kuj muaj ib lub hauv paus tseem ceeb hu ua taproot, qhov twg, lwm cov hauv paus hniav me dua. Txawm hais tias hom nroj tsuag, cov hauv paus hniav yog qhov tseem ceeb rau cov nroj tsuag txoj kev loj hlob thiab kev ciaj sia, yog li txhawb kom muaj kev sib sib zog nqus thiab dav hauv cov hauv paus hniav uas tuaj yeem pab txhawb kev noj qab haus huv ntawm cov nroj tsuag.
Cov nroj tsuag dicot puas muaj cov hauv paus hniav zoo?
Adventitious cag (AR) yog dav dav hauv ntau lub dicot thiab hom monocot uas lawv feem ntau sib txawv ntawm qia. Thaum AR tsim kho los ntawm cov nodes, lawv hu ua nodal cag.
4 hom cag yog dab tsi?
Txoj kev sib txawv ntawm cov hauv paus hniav yog:
- Tswv yim.
- Fibrous cag.
- Nkauj tawm tshiab.
2 hom cag yog dab tsi?
Taproots thiab fibrous cov hauv paus hniav yog ob hom hauv paus ntsiab lus. Nyob rau hauv ib tug taproot system, lub hauv paus loj hlob vertically downward nrog ob peb sab hauv paus.
Pom zoo:
Leej twg yog tus tsis muaj cag?
Tus neeg uas yog rootless tsis muaj tsev nyob ruaj khov lossis chaw nyob. Koj tus nkauj muam nraug nus tsis muaj peev xwm txuag tau nyiaj rau daim pib mus rau Is Nrias teb thiab tom qab ntawd siv xyoo rov qab mus ncig Asia. Qee cov nroj tsuag tsis muaj cag, loj hlob yam tsis muaj cov hauv paus hniav kom nqus cov as-ham.
Puas sycamores muaj cov cag tob?
American Sycamore Roots Txawm hais tias qee cov ntoo, zoo li cov ntoo qhib, xa mus rau qhov tob, hauv nruab nrab cov cag ntoo uas ua haujlwm tseem ceeb, feem ntau tsis. … Qhov no yog qhov tshwm sim ntawm Asmeskas tsob ntoo sycamore. Feem ntau ntawm nws cov hauv paus hniav yog nyob rau hauv 6 ko taw ntawm cov av saum npoo, thiab tsob ntoo nquag tsim cov hauv paus loj.
Cov ntoo twg muaj cov cag ntoo?
Ntawm thiab keeb kwm cov ntoo ntoo nrog cov cag ntoo Ceiba pentandra ntawm Vieques, Puerto Rico. Moreton Bay Fig Tsob Ntoo | Ficus macrophylla hauv Queensland, Australia. Artocarpus heterophyllus, Is Nrias teb. Terminalia arjuna, India.
Qhov twg premolar muaj 2 cag?
Maxillary premolars Lub maxillary thawj premolar muaj qhov sib txawv morphology tab sis feem ntau suav hais tias muaj ob lub hauv paus thiab ob lub kwj dej (Fig. 1.58). Puas muaj premolar muaj ob lub hauv paus? Tus naj npawb ntawm cov hauv paus hniav rau txhua hom hniav sib txawv.
Puas yog cov hlwb bulliform muaj nyob rau hauv dicots?
Teb tiav: Bulliform cells lossis lub cev muaj zog muaj nyob nyob rau saum npoo ntawm nplooj ntawm ntau cov monocots. Lawv yog cov loj, npuas-puab epidermal hlwb uas tshwm sim nyob rau hauv pawg nyob rau saum npoo ntawm nplooj ntawm ntau monocots.
