photosynthesis Flashcards
photosynthesis defenition
the process in which plants manufacture carbohydrates from raw materials using energy from the light
how are plants autotrophs
they can make complex moelcules from simple molecules
how are plants producers
they can make their own food
what can plants use glucose for
- starch
- synthesis lipds
- form cellulose for cell wall
- produce amino acids
word equation for photosynthesis
carbon dioxide + water -> glucose + oxygen
symbol equation for photosynthesis
6CO2 + 6H2O -> C6H1206 + 6O2
3 factors that limit the rate of photosynthesis
- temperature
- light intensity
- CO2 concentration
what is a limiting factor
something present in the environment in such short supply that it restricts life processes
how does temperature affect the speed at which CO2 and H2O move through plant
temp. of environement affects how much kinetic energy the particles have
how is light a limiting factor
it affects the amount of energy it has to carry out photosynthesis
how does carbon dioxide affect photosynthesis
the more CO2 the faster the reaction happens
how is no. of chloroplasts a limiting factor
they contain pignment which absorbs light energy
waxy cuticle
-protective layer on top
- prevents water from evaporating
upper epidermis
- thin and transparent to allow light to enter the palisade mesophyll underneath
palisade mesophyll cells
- column-shaped and tightly packed with chloroplasts to absorb more light
