Osisi
Osisi na-abụkarị photosynthetic eukaryotes, na-akpụ alaeze Plantae.  Ọtụtụ bụ multicellular.  N'akụkọ ihe mere eme, alaeze osisi ahụ gụnyere ihe niile dị ndụ na-abụghị anụmanụ, gụnyere algae na fungi.  Nkọwa niile dị ugbu a na-ewepu fungi na ụfọdụ algae.  N'otu nkọwa, osisi na-etolite clade Viridiplantae (Latin maka "osisi akwụkwọ ndụ akwụkwọ ndụ") nke mejupụtara algae ndụ ndụ na embrayophytes ma ọ bụ osisi ala.  Nke ikpeazụ gụnyere hornworts, liverworts, mosses, lycophytes, ferns, conifers na gymnosperms ndị ọzọ, na osisi okooko.  Nkọwa dabere na genome gụnyere Viridiplantae, yana algae na-acha uhie uhie na glaucophytes, na clade Archaeplastida.￼

Osisi ndụ ndụ ndụ na-enweta ọtụtụ ike ha site na ìhè anyanwụ, na-eji chloroplasts sitere na endosymbiosis na cyanobacteria.  Chloroplasts na-eji chlorophyll pigment eme photosynthesis, nke na-enye ha agba ndụ ndụ.  Ụfọdụ osisi na-ata ahụhụ, ha enwekwaghị ike imepụta chlorophyll nkịtị ma ọ bụ photosynthesize.  A na-eji osisi eme ihe site na mmeputakwa mmekọahụ na mgbanwe nke ọgbọ, mana mmeputakwa asexual bụkwa ihe a na-ahụkarị.￼

E nwere ihe dị ka ụdị osisi 380,000 a maara, nke ọtụtụ n'ime ha, ihe dị ka 260,000, na-emepụta mkpụrụ. Osisi ndị na-acha akwụkwọ ndụ akwụkwọ ndụ na-enye oke nke ikuku oxygen nke ụwa ma bụrụkwa ihe ndabere nke ọtụtụ usoro okike nke ụwa. Mkpụrụ, mkpụrụ osisi, na akwụkwọ nri bụ nri ụmụ mmadụ bụ isi ma bụrụ ndị a zụlitere kemgbe ọtụtụ puku afọ. Osisi nwere ọtụtụ ọdịbendị na ihe ndị ọzọ, dị ka ihe ịchọ mma, ihe owuwu, ihe ederede, na, n'ọtụtụ ihe dị iche iche, ha abụwo isi iyi nke ọgwụ. A maara ọmụmụ sayensị nke osisi dị ka botany, alaka nke ihe ndị dị ndụ.

Echiche ndị ọzọ

Ọdịdị 

When reproducing sexually, plants have complex lifecycles involving alternation of generations. One generation, the sporophyte, which is diploid (with 2 sets of chromosomes), gives rise to the next generation, the gametophyte which is haploid (with one set of chromosomes), and in some plants reproduces asexually via spores. In non-flowering plants such as mosses and ferns, the sexual gametophyte forms most of the visible plant. In seed plants (gymnosperms and flowering plants), the sporophyte forms most of the visible plant, and the gametophyte is very small. Flowering plants reproduce sexually using flowers, which contain male and female parts: these may be within the same (hermaphrodite) flower, on different flowers on the same plant, or on different plants. Male pollen enters the ovule to fertilize the egg cell of the female gametophyte. Fertilization takes place enclosed within the carpels or ovaries, which develop into fruits that contain seeds. Fruits may be dispersed whole, or they may split open and the seeds dispersed individually.

 Ebe nchekwa data botanical na ahịhịa

 Ebe nchekwa data nke African Plants Initiative
 Australia
 Osisi ndị dị na Chile na Chilebosque
 e-Floras (Flora of China, Flora of North America and others) E debere ya na  Wayback Machine
 Flora Europaea
 Flora nke Central Europe (n'asụsụ German)
 Flora nke North America E debere ya na  Wayback Machine
 Ndepụta nke Japanese Wild Plants Online E debere ya na  Wayback Machine
 Zute Ogige Botanical nke Mba Tropical
 Lady Bird Johnson Wildflower Center - Native Plant Information Network na Mahadum Texas, Austin
 Ngalaba Ọrụ Ugbo nke United States abụghị nanị maka ụdị US

Osisi