How is photosynthesis similar in C₄ plants and CAM plants?
a) In both cases, thylakoids are not involved in photosynthesis.
b) In both cases, rubisco is not used to fix carbon initially.
c) In both cases, only photosystem I is used.
d) Both types of plants make sugar without the Calvin cycle.
e) Both types of plants make most of their sugar in the dark.
