Algae Brown: sharaxaad kooban waaxda

algae Brown waa koox tiro ka mid ah dhirta in ugu horrayn ku nool biyaha badda. Si aad u taariikhda, noocyada loo yaqaan oo kaliya siddeed, taas oo dabcan ah ee horumar ay u guureen deegaan biyaha saafiga ah.

Waaxda Kelp: dhismaha jidhka

Dhammaan xubnaha waaxda this yihiin jidhka multicellular - foomamka gumeysiga iyo unicellular jiritaanka aan shaaca ka qaaday. Sida size, waxay noqon kartaa mid aad u kala duwan - sida fronds noqon kartaa cqaadir, oo ay gaaraan dhowr mitir oo dherer ah. Loo yaqaan dhirta badda sanadlaha ah, laakiin waxaa jira kuwa ku nool ilaa 18 sano.

Haddii aan ka hadlo qaabka iyo qaab-dhismeedka thalli ah, waxaa sidoo kale waa boqor kala duwan. jirka inta hirku ka koobnaan kartaa filaments of taarikada, bacaha, qalalin ama ay duurka yar yar. Si substrate waa go'an ama warshad via kaliya ama rhizoids nidaamka.

Integument wakiil derbiga gacanta, kaas oo inta badan ka kooban yahay laba lakab (saddex lakab oo uu leeyahay wakiilada). The lakabka cover dibadda muhiimad kooban yahay walxaha klorofyll iyo sidoo kale waxaa ku jira polysaccharides sulfated. Lakabka hoose ku qoran bulk macdantaa cellulose.

algae borax: Qaabkadhismeedka cell

dabeecad u muhiim ah oo unugyada nidaamsan yahay joogitaanka plastids. The wakiillo ka socda kooxdan oo ah dhirta, unug kasta waxaa ku jira tiro badan oo ah chloroplasts yar fiican oo heer sare. Plastids afar xuub. Sida caadiga ah, xuubka sare ee xuubka chloroplast waa soo gudubtaa galay reticulum ku endoplasmic ama xuduntii. Sida chlorophyll, halkan waxa la soo bandhigay noocyo A, C1 iyo C2.

Intaa waxaa dheer, ee plastids ee algae ku jira fucoxanthin, violaxanthin, zeaxanthin iyo beta-carotene, kaas oo sidoo kale waa dabeecad u muhiim ah oo Plant Taxonomy.

bu'da unugga waa mid keliya, in kastoo ay jiraan qaar ka mid ah multi-noocyada. Shayga ugu muhiimsan waa hrizolaminarin u tudhi in lagu shubo vacuoles gaar ah ama sida dhagaxyada cytoplasmic.

Kelp iyo dhalmo

Wakiilada Waaxda this vegetatively laguma faafin karo, galmada iyo asexually. In noocyada ugu, cloning waxaa lagu fuliyaa qeybi thallus ah. Laakiin, tusaale ahaan, ficus on kaliya ee jirka waxaa jira koox ka mid ah unugyada gaar ah in noqon kartaa diiriyay cusub marka loo baahdo.

Sida for habka asexual, inta badan waxaa la fuliyaa iyadoo adeegsanayo zoospores. noocyada kaliya dhowr ah soo saari by yahay ee Mono go'an ama tetraspor. By habka, zoospores iyo gametes - foomka kaliya jiritaanka flagellates kelp.

Sida for habka galmada, waxay noqon kartaa:

• Isogamous (manida iyo ukunta waa inay isku qiyaas).
• Heterogamic (gametes lab iyo dhaddig leeyihiin gametes kala duwan).
• Oogamnym (gametes lab yar yar yihiin iyo mobile, halka dumarka uugoniya sii size waaweyn taagan oo kala duwan).

Qiyaastii ee 80s ee qarnigii 20aad ayaa laga helay qaar ka mid kiimiko ku qarisay by jidhka inta lagu guda jiro horumarinta algae galmada. Quraankani ma aha sida Pheromones-barasho oo firfircoon oo soconaysaa ilaa maantadan la joogo.

Kelp iyo wakiilada ugu fiican u yaqaan

Mid ka mid ah noocyada ugu fiican u yaqaan waxaa loo arkaa kelp sonkorta, ama inta hirku. Warshad waxay leedahay dissected badan oo la diiriyay, dhererka kaas oo noqon kara laga bilaabo 1 ilaa 14 mitir. thallus The dhisaa tiro aad u badan oo ah laminarin. Intaa waxaa dheer, inta hirku waxaa loo arkaa il qiimo of iodine. Wadamada qaarkood, geedka this waa kaymo iyo si firfircoon loo isticmaalaa in saladh iyo saxamada kale. Of Tal sidoo kale daawooyinka loo isticmaalo in lagu daaweeyo cudurrada thyroid.

Sargassum panulirus ayaa sidoo kale si weyn loo yaqaan, sababtoo ah waa ay sabab u joogto ah, thalli dheer ee dhirta biyaha Badda Sargasso waqtiga aad halis u ah dabaasha.