Pestle - menene wannan? A cikakken bincike na tsarin da kuma manufar da pistil

Flower - mafi ban mamaki na yawan jinsunan Flora, wanda yana da dama zažužžukan ga form, dandano da launi. Amma ta yaya ne shi cewa furanni haifa? Kowane flower yana stamens da pistil - ne ta haihuwa gabobin.

Mene ne pestle?

Pestle - a toho kashi, kunsha da dama carpels. Wasu shuke-shuke ba zai iya saduwa da wata guda pistil, da kuma 2 ko fiye.

Ƙananan ɓangare na da kullum inflated, da ake kira mai yawa da kwai, wanda smoothly wuce a cikin wani narrower shafi da kuma stigma. Akwai kuma iri kamar poppy, a cikin abin da wani shafi a wani pestle ba ya nan, da kuma kwai nan da nan da ke shiga cikin stigma. The sama na pistil aka tsara don tarko pollen a lokacin pollination, don haka da siffar da stigma ne daban-daban - a star-dimbin yawa, filamentous, filafili, feathery. Post tsawo dogara da stigmas ikon gane da kuma kama hirtsinta hatsi.

Ina da tsaba?

Pestle - wani iri store. Future tsaba a cikin nau'i na ovules aka adana a cikin ovaries na pistil. A lokacin pollination, pollen motsa a kan al'amudin zurfi daga cikin kwai, da tsaba suna kafa, da kuma kwai kanta an canza kama zuwa wani tayin. Wannan shi ne dalilin da ya sa shi ne ya dauki mafi muhimmanci na flower.
All furanni kasu kashi bisexual, gay mata da kuma gay maza. The iyali bisexual hada da hatsin rai, Peas da ceri. A guda-jima'i mace shuke-shuke a cikin toho ba stamens, yayin da gay maza - da pistil. Daga cikin gay iya saduwa da kokwamba, teku buckthorn, poplar. A furanni daga cikin wadannan shuke-shuke iya kasance, rabi da namiji da kuma jera mace.

Yadda pollinated furanni?

Idan bisexual shuke-shuke duk bayyanannu, sai su ninka a cikin tsari na kai-pollination, da guda-jima'i ne mafi rikitarwa. Mafi na kowa namiji da mace buds girma a kan wannan shuka (itatuwa, shrubs). Ba tare da taimakon kwari pollen da aka canjawa wuri daga namiji furanni ga mace pistil. Wannan cucurbits, Hazel da kokwamba. Iri guda ba tsire-tsire ma sũ ne waɗanda suka shrubs tare da namiji da mace fure girma dabam. Mafi yawansu - wakilan gida Flora (Aspen, poplar, nettle, Dandelion da Willow).

Amsa tambaya, "pestle - shi ne: wani m sashin jiki a flower ko rakiyar kashi na tsarin juyin halitta," da shi za a iya ƙarasa da cewa ba tare da pistil pollination mai yiwuwa ba ne a bisa manufa. Amma juyin rabo daga shuke-shuke a cikin namiji da mace kawo wa rayuwar wani mutum da wani inconveniences, kamar poplar fluff - tare da taimakon wani namiji itace tsaba fada a kan mata tsaba.