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biology
B2
palisade mesophyll cells
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Palisade mesophyll cells in leaf
cylindrical
shape, arranged at right angles to the
upper epidermis
, features to optimise
photosynthesis
have features to optimise trapping of
sunlight
and uptake of carbon dioxide to make
glucose
photosynthesis
6CO2
+
6H2O
-
C6H1206
+
6O2
Features of palisade mesophyll for photosynthesis
cells
elongated
, cylindrical, many closely packed together to increase SA, absorb as much
light
as possible
many
chloroplasts
, contain chlorophyll, to trap
sunlight
chloroplasts moved by
cytoskeleton
, which
protects
them from sun
large permanent vacuole pushes chloroplasts to outer edge of cell, increases light
energy
, reduces
diffusion
distance for CO2
thin, transparent
cellulose
cell walls so easy
gas
diffusion
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