C4 plants and CAM plants fix carbon in a larger molecule only once during photosynthetic reactions.
For many plants to grow well in hot,dry weather they must be watered so their stomata will remain open for longer periods of time to let in carbon dioxide.
How would Earth be different without photosynthesis?
A)The amount of oxygen in the atmosphere would be lower.
B)Heterotrophs would have few food sources.
C)Autotrophs would reply on other chemical mechanisms to make carbohydrates.
D)More sunlight would be absorbed and converted to environmental heat.
E)All answers are correct.
C4 plants and CAM plants fix carbon in a larger molecule twice during photosynthetic reactions.