He aha ka ke gametophyte (ano, 'ano,' ano)

Na mea ola a meaola hele i kekahi ma ke ola kalapona: mai ka hapai ana (i ka lepe puke) i make (make), a me ke kanu mea,ʻaʻole he koe. Ko lakou hanohano nō hoʻi hiʻona o ka'ōlelo kaʻina hana i ua alternating sporophyte a me ka gametophyte.

A i ka mea i ka gametophyte - kālailai i aku au mamuli o keia Haawina. Ua pono e mai la oia i ka loa pinepine ua i kaʻawale ka gametophyte, a laila, pu me sporophytes paha 'ana hilinaʻi nui ma luna o laila.

He aha ka ke gametophyte?

Kaʻia "gametophyte" ua loko mai o ka olelo Helene, o hua'ōlelo no "gamete", oa. E. Reproductive halepaahao a me ka phyton (kanu) a translates like moe hanauna a me kekahi o nā kuʻina o ka mea kanu? Acaeoey. I kālaimeaola, ka haploid germ hanauna i ka palapala inoa - «N».

ano

E maopopo i ka gametophyte mea pono e maopopo ia pehea ua hana a me ia mea. Gametophyte mea he kiʻiona hiʻona characterizing i nā mea kanu a pau a hiki i ka papa o ka kiekie spore. Ke kaumaha ma muli o ka differentiation i loko o ka gametophyte e hoʻomōhala gametangia (generative nā loko o ka moe nā'ōlelo) o mau ano: he kane a me ka wahine.

? aneii Hiʻona

Ka a pau kaʻina hana o ka moe nā'ōlelo i loko o kanu mea ma ka palapala o ka conjugation ( 'o ia hoʻi, E. Two kuokoa protoplast kuʻi nukeliu vegetative aeee). Nui kekahi a me ka ia kanaka hiki ka poʻe kūkulu i nā gametes paha spores. Akā, aia no na hihia a pau, i ka wa o ka paio kālaimanaʻo e pono i kekahi 'ano ulu, a me gametes wale nō ma luna o ka mea' ē aʻe. Kanaka, a hoʻomōhala i ka spores, i kapaʻia ka sporophyte, a me ka kekahi ma i gametes i hana - gametophyte.

Gametophyte i ka mea kanu

Gametophyte mea bisexual a me ka homosexual. Ma sporophyte diploid nuclei i ka mea, i ka chromosome 'ia paha, akā, i ka mea, haploid gametophyte. Poi pu hapanui o ka lahui līoho, a kokoke e pau kiekie ae kanu i he okoa kumu i loko o ka cyclical ana a me ka alternation o ka hanauna, a i paʻi asexually a me nā kiʻie hōʻikeʻike.

Schematically, ka? Aneii kaʻina hana hiki e na poe like penei: gametophyte → →? Iecaianoaaiiuo o gamete kuʻi nukeliu o gametes zygote ho okumu → → → ulu o ka diploid sporophyte, a no laila, ma luna o.

Gametophyte 'ole ka loa like, a me kēia hilinaʻi nui ma luna o ke' ano o ka generational loli mau a me na ia a pau o nā mea kanu. No ka laʻana, ka mea līoho ua malama monotonous alternation o nā hanauna (isomorphic), no laila, gametophyte ka mea, na poe i kuokoa pa alima, i mea kaawale, a aole i oko, mai ka ia sporophyte.

A 'aneʻi ma ka laminaria līoho, a i ke kiʻiona (heteromorphic) kūpono' ana kalapona, ka gametophyte Ua loa okoa, okoa mai ka sporophyte, he 'ole i loko o ka palapala o lalo-ulu a manamana ai filamentous thalli. Kokoke nā 'elele o ka sporophytes, a me ma ka'amaʻu, ke gametophyte aʻole underdeveloped a aia no he loa pōkole manawa.

Aie i ka mea i loko o ka papa o ka evolution i mea kanu o ka luna papa ua he pahee ka ho'ēmiʻana o ka gametophyte, ka mea, ua nalowale ko lakou moe ano pono'ī. No ka laʻana, hua mea kanu loa hoʻi hanauna o nā wāhine, a me nā kahua o ka hoʻonaʻauao a pau o ka? Acaeoey e ana ma ka sporophyte.

Female gametophyte gymnosperms poe multicellular haploid endosperm a oi archegonia like tidara 'ole' ē aʻe gymnosperms niioaaonoaaiii. Ma ravnosporovyh 'elele prothallia'amaʻu kanu mea o nā sexes.

Male gametophyte hua kanu i ke kino o ka pollen, a originates mai microspores i 'ano apau loa gametes i germinating pollen Tube. Akā, prothallia ravnosporovyh'amaʻu - bisexual.

Pela, ke gametophyte mea,ʻaʻole e kaukaʻi ma ka manawa o ka mea kanu a mea kanu ola, a me ka wale o kona 'ano a me ka evolutionary hiʻona.

ka hopena

Pela, ke gametophyte, i nā kiʻie hanauna i kanu ana a me ka characterizing kekahi, a sequential alternation o ka hanauna i loko o ko lakou ano, he mau hiʻona. Mua o nā mea a pau, ka mea, ua hana mai ka hoopaapaa i kekahi haploid kau o chromosomes a me gametes mau ano nānā 'ole o ka ina paha ia mea i ka hana kūikawā ke keka nā loko a me maʻamau vegetative keena.

Ano, e ike i ka mea a ka gametophyte a me nā mea i kona hiʻona.