plants and their anatomical structure resume...
TRANSCRIPT
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PLANTS AND THEIR PLANTS AND THEIR ANATOMICAL STRUCTURE
Part 1: Plant cell and Tissues
Adi RahmatJurusan Pendidikan Biologi, FPMIPAUniversitas Pendidikan Indonesia
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General Plant Organization General Plant Organization
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the structure of the root the structure of the root
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diagram of the root tipdiagram of the root tip
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Jaringan Penyusun Tubuh Tumbuhang y• Jaringan Derma/Epidermal:
Epidermis dan derivatnya (trikoma Epidermis dan derivatnya (trikoma, rambut akar, dll)
• Jaringan DasarParenkim dan derivatnya (kolenkim; Parenkim dan derivatnya (kolenkim; sklerenkim; mesofil - pelisade dan spong;)
• Jaringan PembuluhXilem: trakeid trakea parenkim xilem serat Xilem: trakeid, trakea, parenkim xilem, serat
xilem. Floem: sel tapis, sel pengiring, parenkim floem,
serat floemserat floem• Meristem
Apeks : akar dan batangLateral : Kambium dan kambium gabusLateral : Kambium dan kambium gabusInterkalar (pada daerah buku dari batang monokotil)
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summary of the tissues origin in th tthe root
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Sel TumbuhanSel TumbuhanSitoplasma: plasmalemma, tonoplas plastida kloroplas
P t l t
Komponenprotoplasma
tonoplas, plastida, kloroplas, mitokondria dll.Inti: membran inti, kromatin, dll.
Protoplast
KomponenNon protoplasma
Vakuola dan zat ergastik (inklusio) kristal pati aleuron
Sel
Lamela tengah
Non protoplasma (inklusio) kristal, pati, aleuron, tetes minyak, cairan vakuola
Dinding sel
Lamela tengah
Dinding primer
Di di k dDinding sekunder
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Sel Tumbuhan
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Membran Plasma
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Membran Plasma
Next !See transparencies
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KloroplasKloroplas
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Inti SelInti Sel
Membran inti
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Dinding Sel
1. Dinding sel sebagian besar d d l lterdiri dari selulosa yang
tersusun multilapis2. Terdiri dari tiga bagian: a. Lamela tengah, terusun dari
pektin (gluelike polysaccharide), melekatkan dua dinding (primer) sel yang berdekatany g
b. Dinding primer, tersusun atas selulosa yang direkatkan satu sama lain oleh hemiselulosa
c Dinding sekunder sangat kuat c. Dinding sekunder, sangat kuat karena selulosa banyak dan tersusun hampir tegak lurus satu sama lain. Pada dinding sekunder ini juga didepositkan ligninini juga didepositkan lignin
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Jalinan mikrofibril selulosa padadi di i (1) d k d (2)dinding primer (1) dan sekunder (2)1 2
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3. Selulosa tidak dalam keadaan molekul tunggal tetapi membentuk ikatan: sekitar 40 molekul selulosa bergabung sekitar 40 molekul selulosa bergabung melalui ikatan hidrogen membentuk kristal linier yang disebut mikrofibril
4. Mikrofibril digabungkan satu sama lain g gmelalui dimer Rhamnogalaturonan
5. Diantara mikrofibril juga terdapat protein yang terikat pada polisakarida
l l ( )non-selulosa (primer)
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Bagaimana mikrofibril selulosa disintesis dan ?didepositkan pada dinding?
1. Selulosa disintesis oleh enzim selulose sintetase yang tertanam dalam membran tertanam dalam membran plasma, membentuk komplek roset.
d2. Senyawa intermediet pembentuk selulosa adalah gula nukleotida: uridine gdiphosphat glucose (UDPG) yang terdapat pada sitoplasma di bawah sitoplasma di bawah membran
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1. Setiap komplek roset mensekretkan satu mikrofibril selulosa berdiameter 5 nm
2 Pada deposit dinding sekunder sejumlah 5 nm mikrofibril bergabung 2. Pada deposit dinding sekunder, sejumlah 5 nm mikrofibril bergabung membentuk 20 nm mikrofibril
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Komponen Non Protoplasma
Amiloplas
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Amilum (Pati)( )
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LeukoplasLeukoplas
LeukoplasLeukoplas
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Kromoplasp
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Kristal DrusKristal Drus
idioblas
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Krista Prisma dan ProteinKrista Prisma dan Protein
Prisma Protein
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Kristal Raphidap
idioblas
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EpidermisEpidermis
Karakter:1. Hidup2. Punya inti3. Tersusun rapat3. Tersusun rapat4. Beberapa punya zat warna (antosianin)
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Epidermis (Derivat) d kStomata dan Trikoma
TrikomaSel Penutup
Stomata
Dikot
Grass
Dikot
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Parenkim
Karakter:Karakter:1. Hidup; berinti2. Ada ruang antar sel3. Dinding tipis, beberapa tebal4. Vakuola besar5. Bentuk isodiametris/tak beraturan
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Aerenkim (Derivat Parenkim)Aerenkim (Derivat Parenkim)
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Kolenkim
Sel dengan penebalan dinding i tid k tprimer tidak merata
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KolenkimKolenkim
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Sklerenkim
Sel berpenebalan dinding sekunder sangat tebal
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Asterosklerenkim
Pada mesofil daun Pada korteks batang
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XylemXylem
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Trakeid dan TrakeaTrakeid dan Trakea
Trakeid
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PhloemPhloem
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Pembuluh TapisPembuluh Tapis