Transcript Document 7492723

Anatomy of
Pisum Sativum
(garden pea)
by
Wannasiri Wannarat
Characters of Pisum sativum
Kingdom Plantae
Class Magnoliopsida
Order Fabales
Family Fabaceae
Genus Pisum L.
Species Pisum sativum L. -- garden pea
(USDA website,2006)
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Angiosperm (Dicot plant)
Annual plant (cultivation during cool season)
edible seeds
a climbing stem which grows as tall as 6 feet
self-fertilization (female and male are from the
same flower)
Leaves
Tendrils
Guard cell
Pinnately Compound
Stipules
(leaflike appendages)
An epidermal section
Guard cell
No Subsidiary
cells
(Anomacytic )
Stomata
stomatal complexes
(20x)
A paradermal section
Major vein
Reticulated venation
Mid vein
Minor vein
Palisade parenchyma
Guard cell
Plastids
(60x)
(4x)
XS of blade
Upper epidermis
Bifacial leaf
Tracheary element
Palisade parenchyma
Spongy parenchyma
Lower epidermis
(40x)
XS of Mid vein
Upper epidermis
Fibers
Xylem
Phloem
Lower epidermis
Fibers
(20x)
(60x)
XS of tendril
Xylem
Phloem
Fibers
Parenchyma cells
Epidermis
Modified leaf
(20x)
Stomata
(4x)
Mesophyll cells
(60x)
XS of Stem
Eustele ( lyzogenous pith)
Epidermis
Discrete vascular bundle
Cortex
(4x)
Primary vascular tissue
Discrete vascular bundle
Interfasicular region
Fascicular cambium
Metaxylem
Protoxylem
Primary phloem
(20x)
XS of vascular bundle
Opened collateral vascular bundle
Endarch primary xylem pattern
Epidermis
Fibers
Primary phloem
Metaxylem
Parenchyma cells
Crushed protoxylem
(20x)
Primary phloem
Fibers
Metaxylem
Phloem
(40x)
(60x)
Companion cell
Sieve cell
LS vs. XS of stem
4
2
Epidermis
4
3
1
2
3
4
1
Secondary wall thickening
(20x)
parenchyma
(20x)
Mesophyll cells
1=Protoxylem, 2=Metaxylem, 3=Promary phloem, 4= Fiber
LS of primary xylem
Metaxylem
Protoxylem
Pits
Helical thickening
( 40x)
Collenchyma tissue
Collenchyma
(40x)
Angular
(4x)
Stomata
(60x)
Leaf gap
Leaf gap
Leaf trace
Branch trace
xylem
LS of root
Root primodia
Endogenous
Rhizodermis
(4x)
(20x)
Vascular cylinder
Root hairs (trichoblasts)
Cortex
Root primodium
apical meristem
Vascular cylinder
Crushed
endodermis
Parenchyma
Primary xylem
Pericycle
(20x)
Cortex
Branch root
Root hairs
Rhizoderm
Cortex
Vascular tissue
(4x)
Branch root (cont.)
Fibers
(10x)
(20x)
Metaxylem
Primary phloem
Curshed Protoxylem
Vascular tissue (xylem)
Primary state of root
Primary xylem pattern :
triarch (exdarch)
(4x)
Metaxylem
Protoxylem
Cortex
Endodermis
Pericycle
(40x)
Primary phloem
Flower bud
Anther
(4x)
Male reproduction
Microspore
Callose wall
Locule
Anther
(20x)
Tetrads of microspores
(40x)
Hydrothode ?
Stoma
xylem
(40x)
(4x)
references
1.
2.
3.
4.
USDA website. 04/28/06.
<http://plants.usda.gov/java/ClassificationServlet?sourc
e=profile&symbol=PISA6&display=31>
Berg, L.R. (1997). Introductory Botany Plant, People &
The environment (1st edition). Brooks/Cole-Thomson
Learning, USA.
Raven, P.H., R.F.Evert, and S.E. Eichhorn. (2003).
Biology of Plants (6th edition). W.H. Freeman and
company, New York, USA.
Esau, K. (1976). Anatomy of seed plants (2nd edition).
John Wiley & Son, Khundlli, India.