problems with photosynthesis
- overview
- stomata
- how would adaptations to reduce water loss impact photosynthesis?
- photorespiration
$C_3$ fixation
- what is it?
- where do $C_3$ plants thrive + examples?
$C_4$ fixation
- what is it?
- where do $C_4$ plants thrive + examples?
CAM plants
- what is it?
- where do CAM plants thrive + examples?
summary
C3, C4, and CAM plants (article) | Khan Academy
- chart
- $O_2$ can compete with $CO_2$ for the active site of the enzyme rubisco, reducing the efficiency of photosynthesis
- resulting pathways is called photorespiration
- Some plants have evolved a $C_4$ pathway as well as a physical arrangement and specialization of cells that bypass the problems of photorespiration
- they do this by incorporating $CO_2$ into a 4C carbon compound in mesophyll cells and then transport it to bundle-sheath cells
- $C_4$ plants are significantly more efficient than $C_3$ plants at performing photosynthesis in hot and/or dry environments