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Topic 9: Plant Biology
Phloem Transport
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Subdecks (5)
Translocation Rate
Topic 9: Plant Biology > Phloem Transport
5 cards
Mass Flow
Topic 9: Plant Biology > Phloem Transport
5 cards
Phloem Loading
Topic 9: Plant Biology > Phloem Transport
4 cards
Phloem Structure
Topic 9: Plant Biology > Phloem Transport
10 cards
Active Translocation
Topic 9: Plant Biology > Phloem Transport
6 cards
Cards (48)
Plants transport
organic
compounds from
sources
to
sinks
Active transport
is used to load
organic
compounds into
phloem sieve tubes
at the source
High
concentrations of solutes in the phloem at the
source
lead to water uptake by
osmosis
Incompressibility of water
allows transport along
hydrostatic pressure gradients
Raised
hydrostatic pressure
causes the
contents
of the phloem to flow towards
sinks
Structure
and
function
are correlated in the
phloem
of plants
What process does the phloem use to transport materials?
active translocation
What does the phloem transport?
food
and other
organic
substances
Phloem occupy the
outer
portion of the
vascular bundle
and are composed of
sieve tube elements
and
companion cells
Phloem vessel walls
consists of cells that are connected at their
transverse
ends to form
porous sieve plates
Vessels are composed of
living
tissue, however sieve tube elements lack
nuclei
and have few
organelles
A
storage organ
is a part of a plant specifically modified to store
energy
or
water
Examples of storage organs include
bulbs
,
tubers
, and
storage roots
Hyphae
are the tubular projections of multicellular fungi that form a filamentous network (
mycelium
)
Fungal hyphae
release
digestive enzymes
in order to absorb nutrients from food sources
What is it called when certain species of fungi form a symbiotic relationship with plants whereby both species benefit?
mutualism
What benefits do plants get from their relationship with fungi?
Mineral transfer
What benefits do fungi get from their relationship with plants?
Nutrient absorption
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