5 Plant Nutrition Flashcards
Define photosynthesis
process by which plants manufacture carbohydrates from raw materials using light
Explain what chlorophyll does (2)
traps light energy
uses trapped energy to make glucose. The process converts light energy into chemical energy in the form of glucose
Word equation for photosynthesis
Carbon dioxide + Water —-> glucose + oxygen
balanced chemical equation for photosynthesis
6CO2 + 6H20 —–> C6H12O6 + 6O2
Usage of glucose in plants
used as a reactant for respiration to release energy
Usage of sucrose in plants
Transported through the phloem to other parts of the plant (glucose is reactive)
Usage of starch in plants
storage
Function of waxy cuticle (2)
stops water evaporating from leaf
protection
Function of chloroplast
contains chlorophyll for photosynthesis
Describe the function and features of the upper epidermis (2)
transparent to allow light to pass
doesn’t contain any chloroplasts
Desrcibe the palisade mesophyll (3)
contains many chloroplasts
columnar shaped to allow many cells to be tightly packed together to maximise light absorption
site of photosynthesis
Function of xylem
transport of water and minerals
function of phloem
transport of sucrose to different parts of the plant
Collective name for xylem and phloem
vascular bundle
Function of spongy mesophyll
contains air spaces to allow efficient diffusion of gases throughout the leaf
function of stomata
small opening on the underside of the elaf that allow diffusion of gases in and out of the leaf
Function of gaurd cell
opens and closes stomata
What two minerals are needed in plants
nitrate ions
magnesium ions
Function of nitrate ions
synthesis of amino acids
Function of magnesium ions
chlorophyll production
How does deficieny of nitrate ions look like
stunted growth and yellow leaves
How does deficieny of magnesium ions look like
stunted growth and yellow leaves
Factors that affect photosynthesis (3) + explanation
Light intensity
Amount of CO2
Temperature
Define limiting factor
the factor that is at the lowest level which limits the rate of reaction
What would happen if the limiting factor increased
rate of reaction will increase until one of the other factors become limiting
How does the graph of the factors that affect photosynthesis look like? (3)
no answers, you should know it stupid silly goose.
