Cov txheej txheem:
- Yuav ua li cas rau kab ntawm lub cev yuav khaws paj ntoos nyob rau hauv ib tug thrum-eyed primrose?
- Dab tsi yog qhov zoo ntawm qhov muaj qhov sib txawv ntawm anthers thiab stigmas hauv Primrose?
- 3 hom paj ntoos yog dab tsi?
- Xenogamy lub ntsiab lus yog dab tsi?
Video: Txhais li cas los ntawm thrum-eyed?
2024 Tus sau: Fiona Howard | [email protected]. Kawg hloov kho: 2024-01-10 06:38
: muaj cov anthers tawm thiab pom ntawm caj pas ntawm corolla thrum-eyed paj ntawm ntau yam primulas - piv tus pin-eyed.
Yuav ua li cas rau kab ntawm lub cev yuav khaws paj ntoos nyob rau hauv ib tug thrum-eyed primrose?
Ib kab mus saib paj paj thawj zaug sau paj ntoos los ntawm qis dua anthers ntawm nruab nrab ntawm nws cov proboscis, uas nws mam li hloov mus rau stigma hauv cov nroj tsuag thrum-eyed, uas yog positioned qis hauv lub paj raj. Nws yog ib qho kev hloov pauv zoo uas ua kom ntseeg tau tias primroses yuav ua tiav hla-pollinated.
Dab tsi yog qhov zoo ntawm qhov muaj qhov sib txawv ntawm anthers thiab stigmas hauv Primrose?
Ob hom paj muaj cov nectar nyob hauv qab ntawm lub paj raj kom nyiam cov kab los kho kom pollination ntawm paj. Darwin xav tias kev sib koom ua ke ntawm anthers thiab stigma nyob rau hauv ob hom paj yuav txhim ntoo khaub lig fertilization.
3 hom paj ntoos yog dab tsi?
Cross-Pollination
- Zoophilous paj– Hauv hom pollination no, cov kab mob pollinating yog tsiaj xws li tib neeg, puav, noog thiab lwm yam …
- Anemophilous paj - Cov paj no yog pollinated los ntawm lub koom haum ntawm cua. …
- Entomophilic paj– Cov paj no tau pollinated los ntawm kab.
Xenogamy lub ntsiab lus yog dab tsi?
: fertilization by cross-pollination tshwj xeeb: cross-pollination ntawm paj ntawm cov nroj tsuag sib txawv - piv geitonogamy.
Pom zoo:
Puas qhov loj ntawm tus txiv neej txhais tes txhais li cas?
Ib tug txiv neej tes Size Hints at His Athletic Ability Cov txiv neej nrog ntiv nplhaib ntev dua txhais tes muaj zog dua, tsis hais lawv lub hnub nyoog thiab lub cev loj npaum li cas, ib pab pawg ntawm leej txiv-tus kws tshawb fawb pom. Ntau qhov kev tshawb fawb qhia txog qhov kev xav uas ntev ntiv tes txuas nrog kev ua kis las zoo tshaj thiab tag nrho lub zog .
Koj txhais li cas los ntawm kev txhais lus?
transitive verb.: to question (qee tus, xws li ib tug nom tswv txawv teb chaws) raug cai hais txog kev ua nom ua tswv lossis txoj cai lossis kev coj tus kheej . piv txwv piv txwv yog dab tsi? Piv txwv li, thaum tus nom tswv hais rau pawg neeg li ' pej xeem', lossis tus kws qhia ntawv hais ib chav kawm li 'cov tub ntxhais kawm', cov neeg nyob rau hauv cov xwm txheej no raug nug kom txais yuav.
Txhais li cas los ntawm kev rov qab los?
Muaj peev xwm lossis muaj peev xwm rov zoo regenerative txhais li cas? Regenerative txhais tau tias tuaj yeem lossis nyiam rov tsim dua -kom rov ua dua lossis rov ua dua tshiab lossis rov ua dua, tshwj xeeb tshaj yog tom qab raug puas lossis ploj.
Puas tib neeg hloov zuj zus los ntawm chimps vim li cas los yog vim li cas ho tsis?
Nws yog ib lo lus teb yooj yim: Tib neeg tsis tau hloov zuj zus los ntawm chimpanzees los yog lwm yam zoo kawg nkaus apes uas nyob niaj hnub no. Peb sib koom ib tug poj koob yawm txwv uas nyob kwv yees li 10 lab xyoo dhau los . Puas tib neeg hloov zuj zus los ntawm apes?
Los ntawm axis ntawm symmetry txhais?
Ib kab los ntawm ib sab kom txhua sab yog daim iav. Thaum cov duab yog folded nyob rau hauv ib nrab raws li axis ntawm symmetry, ces ob halves match up . Koj txhais li cas los ntawm axis ntawm symmetry? Lub axis ntawm symmetry ntawm parabola yog kab ntsug uas faib cov parabola rau hauv ob qhov sib xyaw ua ke.
