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(4) Anatomy of Roots and Shoots, Secondary Growth
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stele
single vascuar cylander in the root
pericycle
single layers of cells around the stele that can be meristematic, location where lateral roots are formed
cortex
ground tissue that includes everything from the epidermis to the pericycle, composed of parenchyma cells
endoderm
a layer of cells with very thick walls at the innemost layer of cortex
endodermis
a selective barrier that only allows certain things into the stele
leaf primordia
embryonic leaf
epidermis is coated with a ____ and does not have ____
cuticle
root hair
ground tissue is made of ____
parenchyma
ground tissue has 2 different regions
cortex-outside
pith-inside
ray
provides lateral transport/pathway for substances
why dont monocots have cortex or pith?
because of the ranom alignments of the vascular cylinders
mesophyll
middle of the leaf
stoma
an opening in the epidermis that lets CO2 in and O2 out
gaurd cells
border and open and close the stoma
vein
vascular cylinder in the leaf
transporation
evaporation of water from leaf
draw dicot leaf
secondary growth
a product of lateral mersistems
vascular cambrium
forms secondary xylem and phloem
fusiform initials
cells of the vascular cambrium, meristemetic tissue in between the primary xylem and primary phloem
what are ray initials made of?
parenchyma cells
cork cambrium
forms in the outside layer of the cortex of the shoot, cells divide to produce cork
cork
parenchyma cells are packed with suberin
suberin
wax that prevents evaporation of water in shoot and protects from insects
bark is made of:
phloem and cork
inside the vascular cambrium is ____(____) and outside is ____(____)
wood (xylem)
bark (phloem)
location of vascular cambrium
between xylem and phloem
cork cambrium is formed from the ____ and will be called ____. outside of the cork will _____
pericycle
periderm
disintegrate
draw dicot shoot with secondary growth
Author
hayesme
ID
16362
Card Set
(4) Anatomy of Roots and Shoots, Secondary Growth
Description
bio 102
Updated
2010-04-27T02:44:26Z
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