water and mineral uptake Flashcards
where does CO2 come in
stomata in leaves
Are minerals food
no
Macronutrients
required in large quantities, fundamental to plant funcitons
ex of macronutrients for plants
N, P, Ca, Mg
Micronutrients
req in sm quantities, most support enzyme funciton
ex of micronutrients
Fe, Cl
Abiotic stress ex
light, water, nutrients
niotic stress ex
bacteria, fungi, insect
Absorbtion
water and minerals moving into plant
conduction
water and minerals moving through plant
TF sugar moves from leaves to fruit
yes, source to sink
diffusion
movement of molecules from high to low
osmosis
diffusion of water across a membrane
membrane function as a seperation
diff parts of DNA expressed
diff cell functions
ctrl over water and mineral movement
solution
solute + solvent
sweetened coffee
Solute
substances dissolved in solvent
sugar
solvent
sunstance that solutes dissolve in
black coffee
Molarity
the concentrationo f a solute in a solution
higher M = lower / higher solute value
higher
hypotonic outside of the cell
water wants to move into cell
isotonic outside of cell
water x want t move everywhere
turgid
water in cell - mwans well hydrated plant
hypertonic outside of cell
water wants to move in membrane
water freedom is opposite from molarity TF
T
where does water want to move - higher or lower molarity
higher
what organelle moderates the turgor pressure
vacuole
How do plants regulate osmotic pressure
moving minerals in and out of cells
water potential
measure of free energy in water
TF water with more solutes has more free energy
false, less free energy
like pouring water and syrup
TF water wants to move with water potential gradients
T
pure water has the highest amt of potential energy TF
t
more energy to less energy
T`
TF water wants to dilute slutes
T
simplistic movement
water move directly from cell to cell passing through membranes
apoplastic movement
water moves thorough cell wall
3 barriers to water movement
Moving across membrane
casparian strip
water x pure water
aquaporins
proteins in membrane for water
TF bc of aquaporins, water can move to xylem
T
Is the simplastic pathway or apoplastic pathway conflicting with casparian strip
apoplastic
look at diagram of 2 water movement walkways
the most permiable place on root
root hair zone
are older roots more or less permiable to water
less
plant architecture
organization of plant roots
hydrotropism
plants responding to moisture
chemotropism
plants response to nutrients
are diffusion and osmosis passive or active transport
passive
higher to lower
which way does the gradient go
high to low energy
does active transport req energy
yes
how do molecules move across a gradient low to high
protein pumps, active trnasport
does water enter plants through active or passive transport
active
do minerals enter plants through active or passive transport
active or passive
TF water soluble molecules still cant enter through water
F it can
how does overfertilization occur
water wants to dilute solutes, water comes out of plant bc high energy to low energy
water needs to passively move into plants
fertilizer burn
too much draws out water from the roots
