Pestle - ihe bụ nke a? A zuru ezu analysis nke ihe owuwu na nzube nke pistil

Ifuru - kasị ịtụnanya akụkụ nke ọtụtụ ndị na umu nke osisi, nke nwere a dịgasị iche iche nke nhọrọ maka ụdị, flavor na agba. Ma, olee otú ọ bụ na okooko osisi mụta nwa? Onye ọ bụla ifuru nwere stamens na pistil - bụ ya omumu akụkụ.

Gịnị bụ ahu nku ahu oji?

Pestle - a nwa osisi mmewere, esịnede a ọnụ ọgụgụ nke carpels. Ụfọdụ osisi enweghị ike izute otu pistil, na 2 ma ọ bụ karịa.

The ala akụkụ nke ya na-ejikarị inflated, a na-akpọ oké na ovary, nke were were na-aga n'ime a mkpafa kọlụm na ihere. E nwekwara ụdị dị ka poppy, nke a na kọlụm na a pestle anọghị n'ụlọ, ovary ozugbo aga n'ime ihere. The elu nke pistil bụ iji ọnyà pollen n'oge pollination, otú udi nke ihere bụ a dị iche iche - a kpakpando ekara, filamentous, naa, feathery. Post elu na-adabere na stigmas nwere ikike ịmata ma weghara pollen mkpụrụ.

Ebe bụ osisi?

Pestle - a na mkpụrụ ụlọ ahịa. Future osisi n'ụdị ovules-echekwara na ovaries nke pistil. N'oge pollination, pollen Nkea na ogidi omimi nke ovary, mkpụrụ na-guzobere, na ovary onwe ya na-ghọọ a nwa ebu n'afọ. Ọ bụ ya mere ọ na-atụle ihe ndị kasị mkpa akụkụ nke ifuru.
All okooko osisi na-ekewa n'ime bisexual, nwoke nwere mmasị nwoke ndị inyom na nwoke nwere mmasị nwoke. The ezinụlọ bisexual gụnyere rye, peas na udara. Na ahụ-nwoke na nwanyị osisi nwa osisi dịghị stamens, mgbe nwoke nwere mmasị nwoke ndị ikom - na pistil. Otu nwoke nwere mmasị nwere ike izute kukumba, oké osimiri buckthorn, poplar. Okooko osisi ndị a osisi nwere ike ịbụ obere nwoke na obere nwanyị.

Olee ifuru okooko osisi?

Ọ bụrụ na bisexual osisi niile doro anya, ha ba uba na usoro nke onwe-pollination, ndị ahụ-nwoke bụ ihe mgbagwoju anya. The kasị nkịtị nwoke na nwaanyị buds na-eto eto na otu osisi (osisi, osisi). Enweghị enyemaka nke ụmụ ahụhụ pollen na-agafere si nwoke okooko osisi nke nne pistil. Nke a cucurbits, hazel na kukumba. Dioecious osisi nwekwara ndị na-osisi na nwoke na nwanyị na okooko osisi na-eto eto iche iche. Ọtụtụ n'ime ha - nnọchiteanya nke obodo osisi (Aspen, poplar, nettle, Dandelion na willow).

Ịza ajụjụ, "Pestle - ọ bụ: a dị mkpa ngwa nke a ifuru ma ọ bụ ịdọkapụta mmewere nke evolutionary usoro," ọ ga-kwubiri na-enweghị pistil pollination agaghị ekwe omume ụkpụrụ. Ma evolutionary nkewa nke osisi n'ime nwoke na nwaanyị na-ndụ nke a nwoke ụfọdụ chefuo ahụhụ, dị ka poplar efu - na-enyemaka nke a nwoke osisi mkpuru ada na ụmụ nwanyị osisi.