República Bolivariana de Venezuela Instituto Universitario Politécnico “Santiago Mariño” Extensión: Mérida Ingeniería Agronómica Student: Geles V. Herrera S. I.C.: v- 23.304.331 Mérida, January 2014 ALBUM OF STEM AND LEAF
Mar 09, 2016
República Bolivariana de VenezuelaInstituto Universitario Politécnico
“Santiago Mariño”Extensión: Mérida
Ingeniería Agronómica
Student:Geles V. Herrera S.I.C.: v-23.304.331
Mérida, January 2014
ALBUM OF
STEM AND LEAF
DEFINITIONSSTEM: the unit on which the leaves and flowers
develop, usually air, straight and elongated,
but has a modified structure in some plants. LEAF: They are the lateral
appendages of limited stem growth only scam
where do perform photosynthesis and gas
exchange.
EXTERNAL PARTS STEM:
INTERNAL PARTS (Stem)
1. Cambium. 2. Xylem. 3. Phloem. 4. Periderm.
Types of branching.
a -. Dummy.
b -. Lateral monopodic.
c.-Lateral simpodic.
Classification.
*AIR.
stem, stipe, reed, calamus, succulent. climber.
Stem. Stipe.
Reed.
Calamus.
Succulent.
Climber.
*Underground:Bulb.
Shallots,
Garlic.
Onion. Leeks.
Tuber.
Yam.
Pope.
Cassava.
Rhizome.
Bamboo Mexico.
Lily rhizome.
EXTERNAL PARTS:
(LEAF)
Lateral rib
CLASSIFICATION.According to the form:
Acintada.
Facilform(sickle-shaped).
Lobed.
Lanceolate.
Acorazonada.
Escuamiform. (flaky).
Acicular (needle).
Flabellate.(fan-shaped)
Ovate.(egg-shaped).
Oval.
Alesnada.(arrowhead shaped).
Linear.
According aside:
Ciliated.
Crenate.
Toothed.
I denticulate.
Double sawing.
Integer.
Lobed.
Sawing.
Finely serrated.
I sinuate.
Prickly.
Wavy.
As venation:
Open. Closed.
Dichotomous.Longitudinal striated.
Webbed. Parallel.
Pinnate.
Crosslinked.
Radiated.
Phyllotaxis: Phyllotaxis is called the arrangement of leaves on the stem.
a) alternately b) opposite.c) statistical d) verticilidas.