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Bio F5 Bab 3~2.3

Organ pengambilan air&garam mineral

QuestionAnswer
Apakah fungsi utama bagi akar? 1>Memberi sokongan&kekuatan srta mngukuhkn kedudukn tumbuhan pd tanah 2>Mnyerap air&garam mineral dari tanah&mengangkutnya ke batang,dan strusnya ke daun
Apakah fungsi pangkal akar? Bhgian akar yg brsambung dgn pangkal batang tumbuhan
Apakah fungsi Rambut akar? -Diadaptasi drpd sel2 epidermis akar -Mnambah jumlah luas permukaan akar utk mningkatkn pnyerapan air&garam mineral
Apakah fungsi jidal akar? -Berada pada hujung akar -Mlindungi akar drpd kerosakan smasa pnembusan ke dlm tanah
Jelaskan pnyesuaian epidermis untuk mnyerap air&garam mineral dengan lbh cekap ~Sel2 epidrmis akr disusun dgn rapat ~Dnding sel nipis&membran sel telap trhdp air memudhkn pergrkan air di dlm akar ~Sel2 rmbut akr X dilapisi kutikel bg membenarkn pnyerapan air ~Sel2 rmbut akr juga mpunyai vakuol besar utk mnyimpan air&garam mineral
Apakah fungsi korteks? ~trletak di bwh lapisn epidrmis ~Mpunyai dnding sel yg nipis utk mudhkn prgrkn air dlm akr ~Sel2 korteks disusun longgar utk mudhkn prtukarn gas ~Sbhagian besar korteks trdiri drpd sel2 parenkima
Apakah fungsi endodermis?? ~Lapisn pmisah antara korteks dgn silinder vaskular ~Sel2 endodermis trsusun rapat&stebal 1 lapisn sel ~Sbhagian besar sel endo mngalami pnebalan suberin/lignin pd dndingnya-mbntuk jalur Casparian ~Hnya mbnrkn air&grm mineral memasuki silinder vaskular
Apakah fungsi silinder vaskular?? ~Merupakn teras akr yg trdiri drpd tisu xilem&floem yg dikelilingi oleh tisu perisikel stebal 1 sel ~Perisikel trlibat dlm prtumbuhn skunder&pmbntukn cabang akr ~Tisu xilem&floem disusun dlm corak bntuk bintng ~Xielm angkut air&grm mineral~floem...
Nyatakan tisu2 yang membentuk akar.. -Tisu epidermis -Tisu endodermis -Tisu korteks -Tisu vaskular
Bandingkan akar monokot&akar eudikot dri segi tisu korteks,tisu endodermis&jalur Casparian -Kedua2 akr mempunyai tisu korteks yg trletak di antara epidermis&silinder pnyukat -Akar tumbuhan monokot mempunyai Jalur Casparian ttpi X smua akr tumbuhan eudikot mempunyai jalur Casparian
Apakah maksud Nutrisi? Proses organisma memperoleh tenaga&nutrien drpd makanan utk prtumbuhan,pnyelenggaraan&pmbaikan tisu rosak
Jelaskan tumbuhan parasit Hidup menumpang pd tumbuhan lain iaitu prumah~Akr tumbuhn parasit mnyerap bhn organik,mineral&air drpd prumahnya dgn mnembusi btng prumah shingga ke berkas vas~ini mnybbkn tumbuhn membesar lbh cepat&subur~mankala prumah kekurngan nutrisi~mati
Berikan contoh tumbuhan parasit Rafflesia sp
Apakah itu tumbuhan epifit? Tumbuhan hijau yg hidup pd tumbuhan lain,prumah~epifit mndpt lbh bnyk cahaya matahari utk brfotosintesis dgn mnumpang pd pokok prumah yg lbh tinggi~tumbuhn ini mnsintesis makanan sndiri~X mngancam prumah krn akr dpt mnyerap nutrien di celah2 btng prumah
Berikan contoh tumbuhan epifit Paku pakis langsuir
Jelaskan tumbuhan karnivor Mampu mnsintesis makanan sndiri dgn mnjlnkn fotosintesis~Mrembes nektar&mempunyai kelongsong utk memerangkp mangsanya=srangga~mngsa dicerna dgn jus pncernaan scra prlhn2~srangga ditngkp mbkalkn nitrogn kpd tumb.~Nitrogn pnting utk prtumbuhn
Apakah tabiat nutrisi bagi tumbuhan Utricularia sp(Rumpai ekor kucing)?? Karnivor
Created by: Enbos
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