Radiolarians, uas nws cov neeg sawv cev peb yuav xav txog hauv peb tsab xov xwm, yog cov tsiaj yooj yim tshaj plaws. Txawm hais tias muaj cov qauv qub, lawv yog cov yeej ntawm cov chromosomes ntawm txhua yam kab mob nyob.
Radiolarians: cov neeg sawv cev thiab chaw nyob
Cov kab mob no yog ib feem ntawm plankton. Lub cev ntawm radiolarians muaj ib lub cell. Feem ntau lawv tuaj yeem pom hauv cov dej sov ntawm dej hiav txwv. Plankton tsis muaj peev xwm ua haujlwm ywj pheej. Nws muaj cov kab mob me me uas ntws hauv kab dej.
Nyob hauv xwm, muaj txog 8 txhiab hom paub. Ntau tus neeg sawv cev ntawm hom radiolarian pom tshwj xeeb hauv lub xeev pob txha. Lawv lub npe thib ob yog beamers. Nws tau piav qhia los ntawm cov qauv ntawm cov pob txha. Nws cov rays, uas ntxiv dag zog rau pseudopodia los ntawm sab hauv, txiav txim siab lub cev txawv txawv ntawm radiolarians. Cov no yog cov tsiaj nrog radial symmetry.
Pseudopodia, lossis radiolarian prolegs, tuaj ntau hom. Ib txhia ntawm lawv yog cov derivatives ntawm internal capsule. Lawv zoo li lub hnub qub thiab hu ua axopodia. Hom prepodia no txiav txim siab lub cev muaj zog ntawm cov kab mob unicellular.
Yog tias tsim cov organellesnto cytoplasm koom nrog hauv kev txav, pseudopodia tau txais cov duab filamentous. Lawv hu ua phyllopodia. Lawv ua haujlwm ntawm kev ntes cov khoom noj.
skeleton structure
nyob radiolarians muaj ib lub cev pob txha. Nws tsim muaj nyob rau hauv ob peb theem. Ua ntej, lub hauv paus cytoplasm tsim cov pob txha taub hau, tom qab ntawd cov koob radial txuas ntxiv los ntawm nws.
Cov neeg sawv cev ntawm cov chav kawm Radiolarians tau muab tso ua ke rau hauv ob peb chav kawm. Qhov kev faib tawm no yog nyob ntawm ntau yam nta. Qhov no yog cov qauv thiab tshuaj lom neeg muaj pes tsawg leeg ntawm lub cev pob txha, nrog rau cov qauv ntawm axopodia - cov organelles ntawm lub zog ntawm radiolarians. Hauv cov neeg sawv cev ntawm subclass Acantharia, lub cev pob txha muaj txog li 20 koob. Tag nrho cov ntawm lawv yog tsim los ntawm strontium sulfate. Lub cev pob txha ntawm protozoa ntawm subclass Polycystinia yog tag nrho ntawm silicon sulfate. Cov xov tooj cua hauv hiav txwv tob tshaj plaws yog Feodarii. Lub hauv paus ntawm lawv cov pob txha yog kev sib xyaw ntawm cov organic thiab silica.
txheej txheem neej
Vim hais tias radiolarians yog cov neeg sawv cev ntawm protozoa, tag nrho cov yam ntxwv ntawm lub physiology ntawm lub subkingdom no kuj yog yam ntxwv ntawm lawv. Digestion tshwm sim nyob rau hauv tshwj xeeb vacuoles. Radiolarians rov tsim dua ob txoj hauv kev. Qhov no tej zaum yuav yog cell faib nyob rau hauv ib nrab los yog sporulation. Radiolarians ua pa los ntawm cell membrane.
Nyob hauv qee hom, cytoplasm muaj ib leeg-celled algae uas nqus carbon dioxide rau photosynthesis. Nyob rau tib lub sijhawm, lawv tseem ceeboxygen ntxiv. Radiolarians siv nws rau kev ua pa thiab oxidation ntawm cov organic teeb meem. Nyob rau tib lub sijhawm, algae xav tau cytoplasm ntawm radiolarians ua qhov chaw nyob. Qhov kev muaj txiaj ntsig zoo sib xws no hu ua symbiosis. Nws tsuas yog pom nyob rau hauv cov xov tooj cua xwb, uas nyob hauv thaj tsam ntawm cov dej illuminated los ntawm lub hnub.
Cov neeg sawv cev ntawm radiolarians thiab paj noob hlis: qhov sib txawv tseem ceeb
Cov kab mob yooj yim tshaj plaws muaj ntau haiv neeg. Qee zaum radiolarians piv nrog lawv "cov txheeb ze" - paj noob hlis. Cov tom kawg kuj yog rau cov chav kawm Sarcode, muaj ib lub xov tooj ntawm tes. Tab sis sunflowers nyiam nyob hauv dej tshiab. Lawv cytoplasm tsis muaj lub hauv paus capsule.
Tsis zoo li cov neeg sawv cev ntawm cov xov tooj cua, lawv tsis muaj lub cev pob txha sab hauv. Nws yog nyob rau sab nraum lub cell. Tab sis nyob rau hauv cov nqe lus ntawm cov tshuaj muaj pes tsawg leeg, cov pob txha ntawm radiolarians thiab sunflowers zoo sib xws. Cov no feem ntau yog cov tshuaj silicon.
Lawv axopodia, zoo ib yam li cov duab tshav, txav deb ntawm lub tawb. Cov qauv no muaj stinging organelles, nrog kev pab los ntawm cov paj noob hlis ntes cov tsiaj txhu. Lawv tua cov kab mob, unicellular algae, invertebrate larvae, ciliates thiab euglena.
Txoj Cai Tsis Txaus Siab
Txawm hais tias cov xov tooj cua yog cov neeg sawv cev ntawm cov tsiaj thaum ntxov tshaj plaws, ntau yam ntawm lawv tseem yog qhov paub tsis meej rau cov kws tshawb fawb. Tsuas yog xav txog, lawv cov cuab yeej caj ces muaj 1600 chromosomes! Kev sib piv, ib tug neeg tsuas muaj 46 leeg xwb.
Thaumsaib ntawm daim duab ntawm radiolarians, nws yuav zoo li tias lawv lub cell nyob rau hauv lub cev pob txha. Qhov tseeb, qhov no tsis yog txhua qhov teeb meem. Nyob rau hauv radiolarians muaj lub cev pob txha. Thiab nws yuav pom tom qab kev tuag ntawm cellular lug.
Meaning in nature
Radiolarian skeletons yog lub hauv paus ntawm ntau pob zeb. Cov no yog cov kab mob qub heev. Lawv thawj pob txha pob txha tau pom nyob hauv Precambrian txaj. Yog li ntawd, radiolarians feem ntau siv nyob rau hauv geology thaum nws yog tsim nyog los txiav txim lub hnub nyoog ntawm pob zeb.
Tam sim no, cov skeletons ntawm cov protozoa pib nyob rau hauv qab nyob rau hauv daim ntawv ntawm radiolarian silt. Nyob rau tib lub sijhawm, nws hloov mus rau hauv cov pob zeb sedimentary. Cov no suav nrog radiolarites, flasks, silica, thiab quartz. Silt kuj tuaj yeem hloov mus ua cov ntxhia tshwj xeeb. Qhov no yog jasper thiab opal. Lawv tau siv dav hauv kev lag luam hniav nyiaj hniav kub hauv daim ntawv ntawm gemstones.
Yog li, radiolarians yog cov neeg sawv cev ntawm subkingdom Unicellular tsiaj, pawg Sarcodidae. Lawv muaj lub cev pob txha, uas tej zaum yuav muaj cov silicon dioxide, strontium ntsev, los yog cov organic teeb meem. Radiolarians yog ib feem ntawm plankton thiab pom nyob rau hauv sov sov hiav txwv. Cov no yog cov kab mob thaum ub heev, ntawm ntau hom fossil tuaj hla. Yog li ntawd, nyob rau hauv geology lawv yog siv los txiav txim lub hnub nyoog ntawm pob zeb. Skeletons ntawm radiolarians yog ib feem ntawm ntau pob zeb sedimentary thiab minerals: silica, opok, radiolarites, quartz, opal.
