Cincin ‘focusing’ okuler - Knowledge Sharing · Komponen Sel Tumbuhan ... In some plant cells...
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Transcript of Cincin ‘focusing’ okuler - Knowledge Sharing · Komponen Sel Tumbuhan ... In some plant cells...
Okuler
Cincin ‘focusing’
okuler
Pemutar lensa
objektif
Lensa objektif
Meja preparat
Kondensor Pengatur
meja Sekrup
penggerak
kasar/halus
Diafragma medan
Pengatur diafragma
CerminSumber
cahaya
Pembuatan Preparat Segar
Penutupan spesimen dengan kaca tutupPenyayatan Bahan dengan Tangan
Komponen Sel Tumbuhan
• Dinding Sel– Dinding primer– Dinding sekunder– Lamela tengah
• Protoplas :– Protoplasma
• Sitoplasma• Inti• Organel
– Non protoplasma• Vakuola• Zat ergastik
Latihan 1. Sifat sel hidup (aliran plasma/cyclosis)1.1 Preparat (segar) : Rambut filamen bunga Rhoeo discolor
Reagen : Air
(1) Sirkulasi (lebih dari satu arah) : mitokondria, Rhoeo
1.2 Preparat (segar) : daun HydrillaReagen : Air
Rotasi (satu arah) : plastida, Vallesneria
cytoplasmic streaming The movement of cytoplasm within a living cell.
Cytoplasmic streaming, also called cyclosis, transports nutrients, enzymes, and larger particles within cells, enhances the exchange of materials between organelles, as well as between cells. In some unicellular organisms, such as amoeba, it provides the mechanism for cell locomotion. It is thought that microfilaments provide the driving force for, and control the direction of, the streaming.
In some plant cells there is a rapid rotatory cytoplasmic movement, limited to the peripheral parts of the cell next to the cell wall, which carries chloroplastsand granules along. This movement may be increased by light, and is dependent on temperature and pH. Auxins, or plant growth hormones, may also increase the rate of movement. In some protozoans, such as the ciliates, slower cyclotic movements transport digestive vacuoles through the cell body.
Zat ErgastikLatihan 2.Preparat : Kerokan umbi kentang Solanum tuberosumReagen : Air dan I2KI
+ I2KI pati biru
Pati majemuk
Pati tunggal
Pati ½ majemuk
Latihan 3. KRISTALkalsium oksalat, kalsium karbonat dan silikat
Kristal raphida pada Sansiviera/Pleomele angustifolia
Kristal drus pada tangkai daun Carica papaya
Kristal Ca oksalat :Kristal pasir batang Solanum nigrumKristal drus tangkai daun pepaya (Carica papaya)
Jaringan Dasar
Pada tumbuhan terdapat tiga sistem jaringan, yaitu :
1. Jaringan dasar
– Fungsi :
» Penyokong tumbuhan
» Pelindung tumbuhan
» Tempat penyimpanan cadangan makanan
2. Jaringan dermal, berfungsi sebagai pelindung tumbuhan
3. Jaringan pembuluh, sistem peredaran
Latihan 5.Preparat : pen. mel. tangkai daun seledri (Apium graveolens)Reagen : Air
Kolenkimsel hidup, dinding berpenebalan (selulosa)Fungsi : penyokong tumbuhan terutama padatumbuhan tidak berkayu
ParenkimSel hidup, dinding primer,
vakuola besarFungsi :
• Tempat penyimpanancadangan makanan
• Tempat terjadinya fotosintesis
• Salah satu jaringan pengisi
Parenkim, kolenkim
Latihan 6. Sklerenkim
• Sel mati saat dewasa, dinding sekunder kaku (berlignin). jaringan penyokong terutama pada tumbuhan berkayu
• Dua tipe sklerenkim : (i) Sklereid (sel batu)(ii) Serat
Asterosklereid pada daun Nymphaea
6.1. SKLEREIDPreparat : pen. mel. daun teratai (Nymphaea)Reagen : anilin sulfat
Preparat : pen. mel. daun teratai (Nymphaea)Reagen : anilin sulfat
Dinding primer
Dinding sekunder
Lumen
Noktah
6.2. SKLERENKIMPreparat : pen. mel. daun SansevieraReagen : anilin sulfat
S. cylindrica. B. S. deserti. C. S. singularis. D. S. stuckyi. E. S. grandis
Mesophyll comprises:
1. Outer region of chlorenchyma2. Water storage tissue in central
mesophyll, function remain unclear
Chlorenchyma (grey)
Fiber bundle (solid black)
Water storage (white)
Vascular bundle (black and white)
Small fiber bundle (small solid black)