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		<title>Sel</title>
		<link>http://mthblog.wordpress.com/2009/09/14/sel/</link>
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		<pubDate>Mon, 14 Sep 2009 08:23:31 +0000</pubDate>
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				<category><![CDATA[SEL]]></category>

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		<description><![CDATA[SEL<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=mthblog.wordpress.com&amp;blog=9252434&amp;post=82&amp;subd=mthblog&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p>SEL</p>
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		<title>JARINGAN TUMBUHAN</title>
		<link>http://mthblog.wordpress.com/2009/09/13/21/</link>
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		<pubDate>Sun, 13 Sep 2009 03:03:11 +0000</pubDate>
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				<category><![CDATA[JARINGAN TUMBUHAN]]></category>

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		<description><![CDATA[A. JARINGAN TUMBUHAN I. STANDAR KOMPETENSI 2. Memahami keterkaitan antara struktur dan fungsi jaringan tumbuhan dan hewan, serta penerapannya dalamkonteks salingtemas. II. KOMPETENSI DASAR 2.1 Meng-identifikasi struktur jaringan tumbuhan dan mengkait-kannya dengan fungsinya, menjelas-kan sifat totipoten-si sebagai dasar kultur jaringan. I. JARINGAN MERISTEM Struktur a. Bentuk sel : menyerupai kubus, berdinding tipis, banyak sitoplasma dan [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=mthblog.wordpress.com&amp;blog=9252434&amp;post=21&amp;subd=mthblog&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p><strong>A. JARINGAN TUMBUHAN</strong></p>
<p><strong><img class="aligncenter size-medium wp-image-66" title="D" src="http://mthblog.files.wordpress.com/2009/09/d.gif?w=300&#038;h=175" alt="D" width="300" height="175" /><br />
</strong></p>
<p style="text-align:left;">I. STANDAR KOMPETENSI</p>
<ul>
<li>2. Memahami keterkaitan antara struktur dan fungsi jaringan tumbuhan dan hewan, serta penerapannya dalamkonteks salingtemas.</li>
</ul>
<p style="text-align:left;">II.  KOMPETENSI DASAR</p>
<ul>
<li> 2.1 Meng-identifikasi struktur jaringan tumbuhan dan mengkait-kannya dengan fungsinya, menjelas-kan sifat</li>
<li> totipoten-si sebagai dasar kultur jaringan.<span id="more-21"></span></li>
</ul>
<p style="text-align:left;">
<p><strong>I.	JARINGAN MERISTEM</strong></p>
<ul>
<li> Struktur</li>
</ul>
<p>a.	Bentuk sel : menyerupai kubus, berdinding tipis, banyak sitoplasma dan tidak memiliki vakuola tengah.<br />
b.	Bersifat  aktif membelah “meristos”<br />
c.	Pertumbuhan pada tumbuhan merupakan hasil dari aktivitas sel-sel meristem, melalui proses :</p>
<ol>
<li> Pembelahan sel &#8220;Mitosis” :Membagi/membelah</li>
<li> Diferensiasi sel (Menghasilkan jaringan dewasa)“ Perubahan struktur dan fungsi sel”</li>
</ol>
<p>d. Pembagian Jenis Jaringan Meristem :<br />
•<strong> Berdasarkan Asal-usul sel</strong><br />
a.	Meristem Primer<br />
Jaringan yang sel-selnya berasal dari perkembangan sel-sel embrionik “Membelah”<br />
(Pertumbuhan Primer :Epidermis, Mesofil, Korteks, Pembuluh Primer )<br />
b.	Meristem Sekunder<br />
Jaringan yang sel-selnya berasal dari jaringan dewasa yang mengalami “diferensiasi”<br />
(Pertumbuhan Sekunder :Jar. Pembuluh <img src='http://s2.wp.com/wp-includes/images/smilies/icon_mad.gif' alt=':x' class='wp-smiley' /> ylem &amp; floem, Jar. Pelindung : felem    &amp;  feloderm)<br />
<strong> •	Berdasarkan Letak jaringan pada tumbuhan, meristem dibagi beberapa tipe :</strong></p>
<ol>
<li><strong>Meristem Apikal</strong></li>
</ol>
<p>Letak : Ujung akar &amp; batang</p>
<p>Fungsi : Memperpanjang ujung<br />
<strong> 2. Meristem lateral	Batang &amp; akar</strong></p>
<p>Letak : Tepi Batang &amp; akar</p>
<p>Fungsi : Meningkatkan diameter<br />
<strong>3. Meristem Interkalar</strong></p>
<p>Letak : Pangkal ruas batang	Pertumbuhan :<br />
Fungsi : Memperpanjang ruas</p>
<p style="text-align:center;"><img class="size-medium wp-image-58 aligncenter" title="a" src="http://mthblog.files.wordpress.com/2009/09/a.jpg?w=300&#038;h=193" alt="a" width="300" height="193" /></p>
<p style="text-align:left;">
<p><strong>II. JARINGAN DEWASA<br />
B. Epidermis</strong><br />
•	Struktur Jaringan</p>
<ul>
<li> a.	Sel-sel penyusun hidup dengan dinding sel yang tipis</li>
<li> b.	Susunan sel selapis dengan susunan sel yang rapat</li>
<li> c.	Tidak memiliki klorofil, kecuali pada sel penjaga stoma</li>
<li> d.	Letak jaringan pada permukaan organ</li>
<li> e.	Bentuk sel penyusun tergantung pada letak jaringan pada organ tumbuhan, umumya berbentuk balok</li>
<li> f.	Dipermukaan luar jaringan terdapat kutin dan kutikula (tumbuhan di atas tanah)</li>
<li> g.	Diferensiasi sel menghasilkan ; sel penutup stoma, trikoma, dan rambut akar</li>
</ul>
<p>•	Fungsi Jaringan</p>
<ol>
<li> Melindungi jaringan di sebelah dalam</li>
<li>Mengurangi penguapan air (Daun)</li>
<li> Pertukaran Udara ( Daun)</li>
<li>Absorbsi Garam &amp; Mineral (Akar</li>
</ol>
<p><img class="aligncenter size-medium wp-image-60" title="b" src="http://mthblog.files.wordpress.com/2009/09/b.png?w=300&#038;h=147" alt="b" width="300" height="147" /></p>
<p class="MsoNormal"><span style="font-family:&quot;" lang="SV"> </span></p>
<p class="MsoNormal"><strong><span style="font-family:&quot;">B. Parenkim / Jaringan Dasar</span></strong></p>
<p class="MsoNormal" style="margin-left:1.25in;text-indent:-1.25in;"><!--[if !supportLists]--><span style="font-family:Symbol;">·<span style="font-family:&quot;font-style:normal;font-variant:normal;font-weight:normal;font-size:7pt;line-height:normal;"> </span></span><!--[endif]--><strong><span style="font-family:&quot;">Struktur Jaringan</span></strong></p>
<p class="MsoNormal" style="margin-left:27pt;"><em><span style="font-family:&quot;" lang="SV">a</span></em><span style="font-family:&quot;" lang="SV">. Sel-sel penyusun : hidup, besar  dan mengandung kloroplas, pectin, hemiselulosa </span></p>
<p class="MsoNormal" style="margin-left:27pt;"><span style="font-family:&quot;" lang="SV"> dan tanpa lignin</span></p>
<p class="MsoNormal" style="margin-left:1in;text-indent:-45pt;"><!--[if !supportLists]--><span style="font-family:&quot;" lang="IT">a.<span style="font-family:&quot;font-style:normal;font-variant:normal;font-weight:normal;font-size:7pt;line-height:normal;"> </span></span><!--[endif]--><span style="font-family:&quot;" lang="IT">Isi Protoplasma sel penyusun tergantung pada peranan sel tsb</span></p>
<p class="MsoNormal" style="margin-left:1in;text-indent:-45pt;"><!--[if !supportLists]--><span style="font-family:&quot;" lang="IT">b.<span style="font-family:&quot;font-style:normal;font-variant:normal;font-weight:normal;font-size:7pt;line-height:normal;"> </span></span><!--[endif]--><span style="font-family:&quot;" lang="SV">Struktur morfologi dan fisiologi selnya bervariasi</span></p>
<p class="MsoNormal" style="margin-left:1in;text-indent:-45pt;"><!--[if !supportLists]--><span style="font-family:&quot;" lang="IT">c.<span style="font-family:&quot;font-style:normal;font-variant:normal;font-weight:normal;font-size:7pt;line-height:normal;"> </span></span><!--[endif]--><span style="font-family:&quot;">Organel selnya lengkap</span></p>
<p class="MsoNormal" style="margin-left:1in;text-indent:-45pt;"><!--[if !supportLists]--><span style="font-family:&quot;" lang="IT">d.<span style="font-family:&quot;font-style:normal;font-variant:normal;font-weight:normal;font-size:7pt;line-height:normal;"> </span></span><!--[endif]--><span style="font-family:&quot;">Memiliki sifat meristematik</span></p>
<p class="MsoNormal" style="margin-left:1in;text-indent:-45pt;"><!--[if !supportLists]--><span style="font-family:&quot;" lang="IT">e.<span style="font-family:&quot;font-style:normal;font-variant:normal;font-weight:normal;font-size:7pt;line-height:normal;"> </span></span><!--[endif]--><span style="font-family:&quot;" lang="SV">Letak jaringan terdapat pada seluruh organ tubuh tumbuhan</span></p>
<p class="MsoNormal" style="margin-left:117pt;text-indent:-.25in;"><!--[if !supportLists]-->-<span style="font-family:&quot;font-style:normal;font-variant:normal;font-weight:normal;font-size:7pt;line-height:normal;"> </span><!--[endif]--><span style="font-family:&quot;" lang="SV">Pada batang dan  akar yaitu di antara epidermis dan pembuluh angkut</span></p>
<p class="MsoNormal" style="margin-left:117pt;text-indent:-.25in;"><!--[if !supportLists]-->-<span style="font-family:&quot;font-style:normal;font-variant:normal;font-weight:normal;font-size:7pt;line-height:normal;"> </span><!--[endif]--><span style="font-family:&quot;">Pada empulur batang</span></p>
<p class="MsoNormal" style="margin-left:117pt;text-indent:-.25in;"><!--[if !supportLists]-->-<span style="font-family:&quot;font-style:normal;font-variant:normal;font-weight:normal;font-size:7pt;line-height:normal;"> </span><!--[endif]--><span style="font-family:&quot;">Mesofil pada daun</span></p>
<p class="MsoNormal" style="margin-left:117pt;text-indent:-.25in;"><!--[if !supportLists]-->-<span style="font-family:&quot;font-style:normal;font-variant:normal;font-weight:normal;font-size:7pt;line-height:normal;"> </span><!--[endif]--><span style="font-family:&quot;">Membentuk daging buah</span></p>
<p class="MsoNormal" style="margin-left:117pt;text-indent:-.25in;"><!--[if !supportLists]-->-<span style="font-family:&quot;font-style:normal;font-variant:normal;font-weight:normal;font-size:7pt;line-height:normal;"> </span><!--[endif]--><span style="font-family:&quot;" lang="SV">Membentuk endosperm atau jaringan sel yang menyimpan cadangan makanan.</span></p>
<p class="MsoNormal" style="margin-left:1in;text-indent:-45pt;"><!--[if !supportLists]--><span style="font-family:&quot;" lang="IT">f.<span style="font-family:&quot;font-style:normal;font-variant:normal;font-weight:normal;font-size:7pt;line-height:normal;"> </span></span><!--[endif]--><span style="font-family:&quot;" lang="SV">Dinding sel relative tipis dengan ruang antar sel relative besar /Rongga antar sel</span></p>
<p class="MsoNormal" style="margin-left:1in;text-indent:-45pt;"><!--[if !supportLists]--><span style="font-family:&quot;" lang="IT">g.<span style="font-family:&quot;font-style:normal;font-variant:normal;font-weight:normal;font-size:7pt;line-height:normal;"> </span></span><!--[endif]--><span style="font-family:&quot;">Sel penyusun banyak mengandung vakuola</span></p>
<p class="MsoNormal" style="margin-left:1in;text-indent:-45pt;"><!--[if !supportLists]--><span style="font-family:&quot;" lang="IT">h.<span style="font-family:&quot;font-style:normal;font-variant:normal;font-weight:normal;font-size:7pt;line-height:normal;"> </span></span><!--[endif]--><span style="font-family:&quot;">Contoh. Jarinngan :</span></p>
<p class="MsoNormal" style="margin-left:117pt;text-indent:-.25in;"><!--[if !supportLists]-->-<span style="font-family:&quot;font-style:normal;font-variant:normal;font-weight:normal;font-size:7pt;line-height:normal;"> </span><!--[endif]--><span style="font-family:&quot;">Mesofil palisade</span></p>
<p class="MsoNormal" style="margin-left:117pt;text-indent:-.25in;"><!--[if !supportLists]-->-<span style="font-family:&quot;font-style:normal;font-variant:normal;font-weight:normal;font-size:7pt;line-height:normal;"> </span><!--[endif]--><span style="font-family:&quot;">Mesofil spons</span></p>
<p class="MsoNormal" style="margin-left:117pt;text-indent:-.25in;"><!--[if !supportLists]-->-<span style="font-family:&quot;font-style:normal;font-variant:normal;font-weight:normal;font-size:7pt;line-height:normal;"> </span><!--[endif]--><span style="font-family:&quot;">Korteks</span></p>
<p class="MsoNormal"><span style="font-family:&quot;"> </span></p>
<p class="MsoNormal"><strong><span style="font-family:&quot;">Fungsi jaringan</span></strong><span style="font-family:&quot;"> </span></p>
<p class="MsoNormal" style="margin-left:1.25in;text-indent:-.25in;"><!--[if !supportLists]--><span style="font-family:&quot;" lang="SV">a.<span style="font-family:&quot;font-style:normal;font-variant:normal;font-weight:normal;font-size:7pt;line-height:normal;"> </span></span><!--[endif]--><span style="font-family:&quot;" lang="SV">Menyimpan cadangan makanan, misalnya pada endosperm jagung</span></p>
<p class="MsoNormal" style="margin-left:1.25in;text-indent:-.25in;"><!--[if !supportLists]--><span style="font-family:&quot;" lang="SV">b.<span style="font-family:&quot;font-style:normal;font-variant:normal;font-weight:normal;font-size:7pt;line-height:normal;"> </span></span><!--[endif]--><span style="font-family:&quot;" lang="SV">Tempat fotosintesis , misalnya pada mesofil daun</span></p>
<p class="MsoNormal" style="margin-left:1.25in;text-indent:-.25in;"><!--[if !supportLists]--><span style="font-family:&quot;" lang="SV">c.<span style="font-family:&quot;font-style:normal;font-variant:normal;font-weight:normal;font-size:7pt;line-height:normal;"> </span></span><!--[endif]--><span style="font-family:&quot;" lang="SV">Penyokong tubuh apabila vakuolanya berisi air, misalnya pada bayam</span></p>
<p class="MsoNormal" style="margin-left:1.25in;text-indent:-.25in;"><!--[if !supportLists]--><span style="font-family:&quot;" lang="SV">d.<span style="font-family:&quot;font-style:normal;font-variant:normal;font-weight:normal;font-size:7pt;line-height:normal;"> </span></span><!--[endif]--><span style="font-family:&quot;" lang="SV">Berperan dalam penyembuhan luka dan regenerasi</span></p>
<p class="MsoNormal" style="margin-left:1in;"><span style="font-family:&quot;" lang="SV"> </span></p>
<p class="MsoNormal"><strong><span style="font-family:&quot;" lang="SV">Kaitan fungsi parenkim dalam hal :</span></strong></p>
<ol style="margin-top:0;" type="a">
<li class="MsoNormal"><span style="font-family:&quot;">Asimilasi <em>“ Fotosintesis”</em></span></li>
<li class="MsoNormal"><span style="font-family:&quot;">Makanan</span></li>
<li class="MsoNormal"><span style="font-family:&quot;">Air</span></li>
<li class="MsoNormal"><span style="font-family:&quot;">Tanin <em>“ Sekresi”</em></span></li>
<li class="MsoNormal"><span style="font-family:&quot;" lang="SV">Prnyimpan Udara dalam Ruang Antar sel /aerenkim ”<em>respirasi”</em></span></li>
<li class="MsoNormal"><span style="font-family:&quot;">Arah Angkut <em>“ Transportasi”</em></span></li>
</ol>
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