The Stem, The Root and The Leaf The Stem, The Root and The Leaf 2012_2013 1By: Mahmoud W. El-Hindi.
Anatomy. Organs Stem Root Leaves 1-Young dicot stem 2- Monoct stem 3- Old dicot stem 1- young dicot...
-
Upload
brennan-ogborn -
Category
Documents
-
view
255 -
download
5
Transcript of Anatomy. Organs Stem Root Leaves 1-Young dicot stem 2- Monoct stem 3- Old dicot stem 1- young dicot...
![Page 1: Anatomy. Organs Stem Root Leaves 1-Young dicot stem 2- Monoct stem 3- Old dicot stem 1- young dicot root 2- monocot root 3- old dicot root.](https://reader034.fdocuments.net/reader034/viewer/2022050723/56649c955503460f94951df3/html5/thumbnails/1.jpg)
Anatomy
![Page 2: Anatomy. Organs Stem Root Leaves 1-Young dicot stem 2- Monoct stem 3- Old dicot stem 1- young dicot root 2- monocot root 3- old dicot root.](https://reader034.fdocuments.net/reader034/viewer/2022050723/56649c955503460f94951df3/html5/thumbnails/2.jpg)
Organs
StemRoot
Leaves
1-Young dicot stem2- Monoct stem3- Old dicot stem
1 -young dicot root2 -monocot root3 -old dicot root
![Page 3: Anatomy. Organs Stem Root Leaves 1-Young dicot stem 2- Monoct stem 3- Old dicot stem 1- young dicot root 2- monocot root 3- old dicot root.](https://reader034.fdocuments.net/reader034/viewer/2022050723/56649c955503460f94951df3/html5/thumbnails/3.jpg)
Identifying Stems and Roots Diagnostic:
Characteristic:
stemroot
pith and cortexsmall relative to pithpith small or absent
1 -V.B. are of radial type2 -xylem is always exarch ( protoxylem is located
near the periphery of the V.B(.3 -Absence of stomata and cuticle
![Page 4: Anatomy. Organs Stem Root Leaves 1-Young dicot stem 2- Monoct stem 3- Old dicot stem 1- young dicot root 2- monocot root 3- old dicot root.](https://reader034.fdocuments.net/reader034/viewer/2022050723/56649c955503460f94951df3/html5/thumbnails/4.jpg)
Root anatomy Dermal tissue ( piliferous layer )One layer , no stomata , no cuticle , the outer wall may extend into root hair
Ground tissue
Cortex Parenchymatous ( dicot.) , some of them sclerenchyamtous (monocot.)Last layer of cortex termed as Endodermis which characterized by presence of casparian strips
{casparian strips : deposits of suberin and lignin on radial wall only Dicot.
On radial +inner tangential Monocot .
![Page 5: Anatomy. Organs Stem Root Leaves 1-Young dicot stem 2- Monoct stem 3- Old dicot stem 1- young dicot root 2- monocot root 3- old dicot root.](https://reader034.fdocuments.net/reader034/viewer/2022050723/56649c955503460f94951df3/html5/thumbnails/5.jpg)
CharaterDicot. rootMonocot root
pericycleGive rise to lateral roots and
secondary meristems
Give rise to lateral root only
V.B.From 2-8Numerous , 20
CambiumAppear later as a secondary meristems
absent
PithSmall or absent Well developed
![Page 6: Anatomy. Organs Stem Root Leaves 1-Young dicot stem 2- Monoct stem 3- Old dicot stem 1- young dicot root 2- monocot root 3- old dicot root.](https://reader034.fdocuments.net/reader034/viewer/2022050723/56649c955503460f94951df3/html5/thumbnails/6.jpg)
EndodermisCasparian strips
![Page 7: Anatomy. Organs Stem Root Leaves 1-Young dicot stem 2- Monoct stem 3- Old dicot stem 1- young dicot root 2- monocot root 3- old dicot root.](https://reader034.fdocuments.net/reader034/viewer/2022050723/56649c955503460f94951df3/html5/thumbnails/7.jpg)
young dicot rootcortex Endodermis Metaxylem
protoxylem
phloem
pith
Starch
![Page 8: Anatomy. Organs Stem Root Leaves 1-Young dicot stem 2- Monoct stem 3- Old dicot stem 1- young dicot root 2- monocot root 3- old dicot root.](https://reader034.fdocuments.net/reader034/viewer/2022050723/56649c955503460f94951df3/html5/thumbnails/8.jpg)
![Page 9: Anatomy. Organs Stem Root Leaves 1-Young dicot stem 2- Monoct stem 3- Old dicot stem 1- young dicot root 2- monocot root 3- old dicot root.](https://reader034.fdocuments.net/reader034/viewer/2022050723/56649c955503460f94951df3/html5/thumbnails/9.jpg)
monocot rootcortex Endodermis Metaxylem
protoxylemphloem
pith
Starch epidermis
![Page 10: Anatomy. Organs Stem Root Leaves 1-Young dicot stem 2- Monoct stem 3- Old dicot stem 1- young dicot root 2- monocot root 3- old dicot root.](https://reader034.fdocuments.net/reader034/viewer/2022050723/56649c955503460f94951df3/html5/thumbnails/10.jpg)
![Page 11: Anatomy. Organs Stem Root Leaves 1-Young dicot stem 2- Monoct stem 3- Old dicot stem 1- young dicot root 2- monocot root 3- old dicot root.](https://reader034.fdocuments.net/reader034/viewer/2022050723/56649c955503460f94951df3/html5/thumbnails/11.jpg)
![Page 12: Anatomy. Organs Stem Root Leaves 1-Young dicot stem 2- Monoct stem 3- Old dicot stem 1- young dicot root 2- monocot root 3- old dicot root.](https://reader034.fdocuments.net/reader034/viewer/2022050723/56649c955503460f94951df3/html5/thumbnails/12.jpg)
Old dicot. Root
Look at key board
![Page 13: Anatomy. Organs Stem Root Leaves 1-Young dicot stem 2- Monoct stem 3- Old dicot stem 1- young dicot root 2- monocot root 3- old dicot root.](https://reader034.fdocuments.net/reader034/viewer/2022050723/56649c955503460f94951df3/html5/thumbnails/13.jpg)
old dicot root
Cork (phellem)Cork cambium (phellogen)Phelloderm2ry
phloemMedullary raysVascular cambium2ry
xylem
![Page 14: Anatomy. Organs Stem Root Leaves 1-Young dicot stem 2- Monoct stem 3- Old dicot stem 1- young dicot root 2- monocot root 3- old dicot root.](https://reader034.fdocuments.net/reader034/viewer/2022050723/56649c955503460f94951df3/html5/thumbnails/14.jpg)
![Page 15: Anatomy. Organs Stem Root Leaves 1-Young dicot stem 2- Monoct stem 3- Old dicot stem 1- young dicot root 2- monocot root 3- old dicot root.](https://reader034.fdocuments.net/reader034/viewer/2022050723/56649c955503460f94951df3/html5/thumbnails/15.jpg)
![Page 16: Anatomy. Organs Stem Root Leaves 1-Young dicot stem 2- Monoct stem 3- Old dicot stem 1- young dicot root 2- monocot root 3- old dicot root.](https://reader034.fdocuments.net/reader034/viewer/2022050723/56649c955503460f94951df3/html5/thumbnails/16.jpg)
Organs
StemRoot
Leaves
1-Young dicot stem2- Monoct stem3- Old dicot stem
1 -young dicot root2 -monocot root3 -old dicot root
1 -dorsiventral dicot leaves2 -isobilateral dicot leaves
3 -monocot leaves
![Page 17: Anatomy. Organs Stem Root Leaves 1-Young dicot stem 2- Monoct stem 3- Old dicot stem 1- young dicot root 2- monocot root 3- old dicot root.](https://reader034.fdocuments.net/reader034/viewer/2022050723/56649c955503460f94951df3/html5/thumbnails/17.jpg)
Leaf anatomy Epidermis Upper and lower surface , stomata on both sides
Ground tissue ( Mesophyll )
Specialized photosynthetic tissue In Dicot. Divided into
palisade Below epidermis and perpendicular to it , contain chloroplasts.
spongy tissue Loosely arranged , much less chloroplast than palisade.In Monocot.
Mesophyll cells all are alike not diffrantiated into palisade and spongy
Vascular tissue
Main V.B . In the center ( midrib ) , type of V.B . As the same of stem.
![Page 18: Anatomy. Organs Stem Root Leaves 1-Young dicot stem 2- Monoct stem 3- Old dicot stem 1- young dicot root 2- monocot root 3- old dicot root.](https://reader034.fdocuments.net/reader034/viewer/2022050723/56649c955503460f94951df3/html5/thumbnails/18.jpg)
dorsiventral dicot leaves
EpidermisHybodermal layer
PalisadeSpongy tissueCollenchymaPericyclic fibersPhloemMetaxylemProtoxylem
![Page 19: Anatomy. Organs Stem Root Leaves 1-Young dicot stem 2- Monoct stem 3- Old dicot stem 1- young dicot root 2- monocot root 3- old dicot root.](https://reader034.fdocuments.net/reader034/viewer/2022050723/56649c955503460f94951df3/html5/thumbnails/19.jpg)
![Page 20: Anatomy. Organs Stem Root Leaves 1-Young dicot stem 2- Monoct stem 3- Old dicot stem 1- young dicot root 2- monocot root 3- old dicot root.](https://reader034.fdocuments.net/reader034/viewer/2022050723/56649c955503460f94951df3/html5/thumbnails/20.jpg)
EpidermisPalisadeSpongy tissue
![Page 21: Anatomy. Organs Stem Root Leaves 1-Young dicot stem 2- Monoct stem 3- Old dicot stem 1- young dicot root 2- monocot root 3- old dicot root.](https://reader034.fdocuments.net/reader034/viewer/2022050723/56649c955503460f94951df3/html5/thumbnails/21.jpg)
![Page 22: Anatomy. Organs Stem Root Leaves 1-Young dicot stem 2- Monoct stem 3- Old dicot stem 1- young dicot root 2- monocot root 3- old dicot root.](https://reader034.fdocuments.net/reader034/viewer/2022050723/56649c955503460f94951df3/html5/thumbnails/22.jpg)
isobilateral dicot leaves
Epidermis Palisade
Spongy tissueCollenchyma
Pericyclic fibersPhloemxylem
![Page 23: Anatomy. Organs Stem Root Leaves 1-Young dicot stem 2- Monoct stem 3- Old dicot stem 1- young dicot root 2- monocot root 3- old dicot root.](https://reader034.fdocuments.net/reader034/viewer/2022050723/56649c955503460f94951df3/html5/thumbnails/23.jpg)
![Page 24: Anatomy. Organs Stem Root Leaves 1-Young dicot stem 2- Monoct stem 3- Old dicot stem 1- young dicot root 2- monocot root 3- old dicot root.](https://reader034.fdocuments.net/reader034/viewer/2022050723/56649c955503460f94951df3/html5/thumbnails/24.jpg)
monocot leavesEpidermisHybodermal layer
(sclerenchyma (Ground tissue
(parenchyma(Bundle sheath
(fibers(PhloemMetaxylemProtoxylemClosed collateralV. B.
![Page 25: Anatomy. Organs Stem Root Leaves 1-Young dicot stem 2- Monoct stem 3- Old dicot stem 1- young dicot root 2- monocot root 3- old dicot root.](https://reader034.fdocuments.net/reader034/viewer/2022050723/56649c955503460f94951df3/html5/thumbnails/25.jpg)
![Page 26: Anatomy. Organs Stem Root Leaves 1-Young dicot stem 2- Monoct stem 3- Old dicot stem 1- young dicot root 2- monocot root 3- old dicot root.](https://reader034.fdocuments.net/reader034/viewer/2022050723/56649c955503460f94951df3/html5/thumbnails/26.jpg)
![Page 27: Anatomy. Organs Stem Root Leaves 1-Young dicot stem 2- Monoct stem 3- Old dicot stem 1- young dicot root 2- monocot root 3- old dicot root.](https://reader034.fdocuments.net/reader034/viewer/2022050723/56649c955503460f94951df3/html5/thumbnails/27.jpg)
![Page 28: Anatomy. Organs Stem Root Leaves 1-Young dicot stem 2- Monoct stem 3- Old dicot stem 1- young dicot root 2- monocot root 3- old dicot root.](https://reader034.fdocuments.net/reader034/viewer/2022050723/56649c955503460f94951df3/html5/thumbnails/28.jpg)
Practical work: We will do transverse section in a leaf:
tools razors
Slides and covers
Pith