Mayankho a Zomera ku Zosintha za Kunja: Mafunso Okambirana ndi Zitsanzo
Zomera, monga zamoyo zokha, zimatha kusintha mogwirizana ndi kusintha kwa chilengedwe chawo chakunja. Luso limeneli ndi zotsatira za mbiri yakale yosinthika yomwe imalola kuti zikhalebe ndi moyo m'malo osiyanasiyana. Munkhaniyi, tikambirana za mayankho osiyanasiyana a zomera ku kusintha kwakunja ndikupereka zitsanzo za mavuto ndi zokambirana kuti timvetse bwino nkhaniyi.
1. Kuyankha kwa Zomera ku Chilengedwe
1.1 Tropism
Tropism ndi njira yokulira yomwe njira yoyendera imatsimikiziridwa ndi njira ya cholimbikitsa. Pali mitundu ingapo ya tropism yomwe imafotokozedwa kawirikawiri mu biology:
– Phototropism: Kuyankha kwa zomera ku kuwala. Zomera zambiri zimakhala ndi phototropism yabwino, zomwe zikutanthauza kuti zimakula kupita ku gwero la kuwala. Auxin, hormone yokulitsa zomera, imagwira ntchito yofunika kwambiri pa izi mwa kufulumizitsa kukula kwa maselo kumbali ya chomera kutali ndi kuwala.
– Gravitropism: Kuyankha ku mphamvu yokoka. Mizu nthawi zambiri imasonyeza mphamvu yokoka mwa kukulira pansi kupita pakati pa dziko lapansi, pomwe zimayambira nthawi zambiri zimasonyeza mphamvu yokoka mwa kukulira mosiyana ndi mphamvu yokoka.
– Thigmotropism: Kuyankha kukhudza. Zomera monga mphesa ndi zomera zina zokwera zimagwiritsa ntchito thigmotropism kukwera podzikulunga ndi zothandizira.
1.2 Nasti
Kusuntha kwa nastic ndi mayankho a kayendedwe ka zomera zomwe sizidalira komwe chilimbikitsocho chimachokera. Kusuntha kwa nastic nthawi zambiri kumakhala kwakanthawi ndipo kumachitika chifukwa cha kusintha kwa mphamvu ya turgor.
– Photonasty: Kusuntha kwachilendo poyankha kuwala, monga maluwa omwe amatseguka m'mawa ndikutseka usiku.
– Nyctinasty: Kusuntha komwe kumachitika chifukwa cha kusintha kwa nyengo monga kutentha kapena kuwala, komwe kumachitika usiku.
– Kugwedezeka kwa nthaka: Kuyankha kukhudza kapena kugwedezeka. Chitsanzo ndi kutseka kwa masamba a chomera cha mimosa chikakhudzidwa.
2. Njira Yosinthira Thupi la Zomera
Kupatula kuyenda, zomera zimawonetsanso mayankho ena monga kusintha kwa thupi:
2.1 Kugona
Kugona ndi mkhalidwe umene chomera chimasiya kukula kwakanthawi kuti chizolowere nyengo yoipa kwambiri, monga nyengo yozizira kapena chilala. Zinthu zikakhazikika, chomeracho chimatuluka mu nthawi yogona ndikuyambiranso kukula.
2.2 Asidi Wosagwira Ntchito (ABA)
ABA ndi homoni ya zomera yomwe imayambitsa kutsekeka kwa m'mimba nthawi youma, kuchepetsa kutayika kwa madzi kudzera mu kutuluka kwa madzi m'thupi. Homoni iyi imathandizanso pakuyambitsa kugona komanso kuyankha kupsinjika.
2.3 Kusintha kwa Kuyika Masamba
Zomera zina zimakhala ndi njira zosinthira zigawo za masamba awo kuti zizitha kupirira chilala kapena kuukira kwa tizilombo toyambitsa matenda. Izi zikuphatikizapo kuwonjezera makulidwe a cuticle kapena kupanga mankhwala oletsa udzu.
3. Mafunso ndi Kukambirana Zitsanzo
Chitsanzo cha Funso 1:
Funso: Fotokozani momwe kuwala kwa dzuwa kumagwirira ntchito m'zomera komanso ntchito ya hormone auxin pankhaniyi.
Kukambirana:
Phototropism ndi kukula komwe kumayang'aniridwa ndi komwe kuwala kukubwera. Mu njira ya phototropism, kuwala kumayambitsa kufalikira kosagwirizana kwa hormone auxin m'mbali mwa tsinde la chomera. Kawirikawiri, kuchuluka kwa auxin kumakhala kwakukulu kumbali ya tsinde kutali ndi kuwala, zomwe zimapangitsa maselo omwe ali mbali imeneyo kutalikirana mofulumira kuposa omwe ali kumbali yomwe akuwonekera mwachindunji ku kuwala. Zotsatira zake, tsinde lidzapinda kupita ku gwero la kuwala, motero kulimbikitsa photosynthesis yogwira ntchito bwino.
Chitsanzo cha Funso 2:
Funso: Fotokozani ndi kufotokoza kusiyana pakati pa tropism ndi kayendedwe ka nastic m'zomera.
Kukambirana:
Kusiyana kwakukulu pakati pa tropism ndi nasticity kuli munjira yoyendera poyerekeza ndi chilimbikitso.
– Tropism: Kusuntha kapena kukula kwa chomera chomwe chimayang'ana mwachindunji ndi komwe chimayambitsa chomwe chikubwera. Chitsanzo ndi phototropism, komwe komwe kukula kwa chomera kumatsatira komwe kuwala kukubwera.
– Nasti: Kusuntha kwa zomera kosagwirizana ndi komwe chilimbikitsocho chimachokera. Kusuntha kumeneku nthawi zambiri kumachitika chifukwa cha kusintha kwa mphamvu ya turgor mkati mwa maselo a zomera. Chitsanzo cha nasti ndi seismonasty mu mimosa pudica, komwe masamba amatseka akakhudzidwa kapena kugwedezeka.
Chitsanzo cha Funso 3:
Funso: Kodi hormone ya abscisic acid (ABA) imakhudza bwanji momwe zomera zimayankhira ku chilala?
Kukambirana:
ABA ndi homoni yofunika kwambiri pothandiza zomera kuthana ndi chilala. Zomera zikakumana ndi vuto la madzi, kuchuluka kwa ABA m'chomera kumawonjezeka. Homoni iyi imayambitsa kutseka kwa stomata, ma pores omwe ali pamwamba pa tsamba, kuti achepetse kutayika kwa madzi kudzera mu kutuluka kwa madzi. Kutseka kwa m'mimba kumathandiza kusunga madzi m'thupi la zomera nthawi ya chilala. Kuphatikiza apo, ABA imapatsanso zomera chizindikiro choti zilowe mu gawo losagwira ntchito, kuchepetsa kukula ndi kugwiritsa ntchito zinthu mpaka nyengo yachilengedwe itakhala yabwino.
Mapeto
Mayankho a zomera ku kusintha kwakunja ndi nkhani yosangalatsa komanso yovuta, yokhudza njira zosiyanasiyana zakuthupi ndi zamankhwala. Mwa kukulitsa kumvetsetsa kwathu za njirazi, titha kumvetsetsa bwino momwe zomera zimapulumukira komanso kusintha malinga ndi malo osinthika. Kuphunzira kudzera mu chiphunzitso ndi machitidwe, monga kuyankha mafunso ngati omwe ali pamwambapa, kudzawonjezera chidziwitso chathu cha zamoyo za zomera ndi kusintha kwawo ku chilengedwe.
