Qhov sib txawv tseem ceeb ntawm cov pits thiab plasmodesmata yog cov pits yog cov cheeb tsam nyias ntawm cov phab ntsa ntawm cov nroj tsuag uas pab txhawb kev sib txuas lus thiab kev sib pauv ntawm cov tshuaj nrog cov hlwb nyob sib ze thaum plasmodesmata yog cov kab txuas txuas txuas txuas txuas nrog cov cytoplasm ntawm cov hlwb nyob sib ze., pab kev sib txuas lus thiab thauj cov khoom ntawm cov nroj tsuag.
Cov noob qes muaj ob txheej txheej ua cov plasma membrane thiab cell phab ntsa. Lub cell phab ntsa yog cov qauv nruj uas tswj cov duab ntawm cov nroj tsuag. Nws kuj muab lub zog thiab kev txhawb nqa rau lub cell. Cog hlwb sib txuas lus nrog ib leeg, thiab lawv pauv cov khoom ntawm lawv. Pits thiab plasmodesmata pab cog cov hlwb rau cov haujlwm no. Pits yog cov cheeb tsam nyias ntawm cov phab ntsa ntawm tes uas muaj ntau nrog plasmodesmata. Plasmodesmata yog cov cytoplasmic txuas hniav uas txuas cov cytoplasms ntawm cov hlwb nyob sib ze. Ob lub qhov thiab plasmodesmata pab txhawb kev thauj mus los ntawm cov tshuaj ntawm cov nroj tsuag thiab kev sib txuas lus ntawm lawv.
Pits yog dab tsi?
Pits yog thaj chaw nyias lossis thaj chaw nqaim ntawm phab ntsa ntawm cov nroj tsuag. Qhov tseeb, lawv yog cov kev nyuaj siab ntawm cov nroj tsuag cell phab ntsa. Pits kho qhov kev sib txuas lus ntawm cov hlwb uas nyob ib sab. Lawv kuj pab txhawb kev thauj khoom ntawm cov hlwb ntawm plasmodesmata. Yog li, plasmodesmata muaj ntau nyob rau hauv pits. Feem ntau, ob qhov pits ntawm cov hlwb nyob sib ze yog nyob ntawm ib leeg. Yog li ntawd, ib tug khub pit yeej ib txwm pom nyob rau hauv cov nroj tsuag hlwb. Txhua lub qhov dej muaj qhov kab noj hniav. Tom qab ntawd ob lub qhov dej ntawm ob qhov sib txawv ntawm qhov sib cais ntawm lub qhov dej membrane. Qhov chaw pom hauv lub qhov dej yog lub qhov chamber.
Daim duab 01: Pits
Pits tuaj yeem yog qhov yooj yim lossis ciam teb. Ib lub qhov dej ciam teb txawv ntawm ib lub qhov yooj yim vim nws muaj phab ntsa thib ob ntawm lub qhov taub. Parenchyma hlwb, medullary rays, phloem fibers, companion hlwb, thiab tracheids ntawm ntau flowering nroj tsuag muaj ib tug yooj yim pits thaum cov hlab ntsha ntawm ntau angiosperms thiab tracheids ntawm ntau conifers muaj bordered pits abundantly. Ntxiv nrog rau qhov yooj yim pits thiab ciam teb pits, qee cov nroj tsuag muaj ib nrab ciam teb pits, dig muag pits thiab compound pits.
Plasmodesmata yog dab tsi?
Plasmodesmata yog cov kab me me uas txuas cov cytoplasm ntawm cov nroj tsuag uas nyob sib ze nrog ib leeg. Lawv yog intercellular cytoplasmic choj. Lawv nkag mus rau hauv ob qho tib si thawj thiab theem nrab cell phab ntsa ntawm cov nroj tsuag ntawm tes thiab tsim ib qho kev nkag ntawm ob lub hlwb kom yooj yim rau kev thauj mus los ntawm cov khoom ntawm ib lub xov tooj mus rau lwm qhov thiab kev sib txuas lus ntawm lawv.
Daim duab 02: Plasmodesmata
Structurally, plasmodesmata yog lub raj zoo li cov qauv. Muaj desmotubules nyob rau hauv qhov chaw ntawm plasmodesmata. Desmotubules muaj ib tug nruj packed endoplasmic reticulum. Ntxiv mus, muaj lub tes tsho cytoplasmic nruab nrab ntawm daim nyias nyias thiab cov desmotubules. Nws yog qhov chaw muaj kua dej uas yog qhov txuas ntxiv ntawm cytosol. Kev hloov ntawm cov molecules tshwm sim ntawm lub tes tsho cytoplasmic. Cov molecules me me diffuse los ntawm lub tes tsho tsis siv lub zog. Lub tes tsho muaj cov protein fibers xws li actin thiab myosin, uas muab lub zog contractile thauj khoom hla plasmodesmata.
Plasmodesmata muaj nyob hauv yuav luag txhua lub hlwb cog. Lawv muaj ntau nyob rau hauv pits. Plasmodesmata yog qhov tseem ceeb hauv kev thauj mus los ntawm cov ntaub so ntswg vascular.
Dab tsi zoo sib xws ntawm Pits thiab Plasmodesmata?
- Ob lub qhov thiab plasmodesmata muaj nyob hauv cov nroj tsuag.
- Plasmodesmata muaj ntau nyob rau hauv lub qhov txhab.
- Lawv pab kev thauj khoom ntawm cov hlwb thiab kev sib txuas lus ntawm lawv.
Qhov txawv ntawm Pits thiab Plasmodesmata yog dab tsi?
Pits thiab plasmodesmata pab cov nroj tsuag kom sib txuas lus thiab thauj khoom ntawm lawv. Pits yog nyias qhov chaw ntawm phab ntsa ntawm tes. Nyob rau hauv sib piv, plasmodesmata yog cov cytoplasmic txuas hniav uas transverse nyob rau hauv lub cell phab ntsa. Yog li, qhov no yog qhov sib txawv tseem ceeb ntawm pits thiab plasmodesmata.
Summary – Pits vs Plasmodesmata
Pits yog thaj chaw nyias ntawm cov phab ntsa ntawm cov nroj tsuag. Cells sib txuas lus thiab sib pauv khoom los ntawm lub qhov. Hauv qhov sib piv, plasmodesmata yog cov txuas hniav microscopic uas txuas cov cytoplasms ntawm cov nroj tsuag nyob sib ze. Plasmodesmata yog tuab nyob rau hauv lub pits. Plasmodesmata kuj pab txhawb kev thauj mus los ntawm cov khoom nruab nrab ntawm cov hlwb thiab kev sib txuas lus ntawm lawv. Yog li, qhov no yog cov ntsiab lus ntawm qhov sib txawv ntawm pits thiab plasmodesmata.
