How is photosynthesis similar in C ₄ plants and CAM plants? a. In both cases, only photosystem I is used. b. Both types of plants make sugar without the Calvin cycle. c. In both cases, rubisco is not used to fix carbon initially. d. Both types of plants make most of their sugar in the dark.



Answer :

Photosynthesis is similar in C₄ plants and CAM plants because in both cases, Rubisco is not used to fix carbon initially.

C₄ plants are those that follow the C₄ pathway. In C₄ pathways, the first acceptor of carbon is PEP (Phospho-Enol Pyruvate). Both the molecules combine to from the OAA (Oxaloacetate). This reaction occurs in the mesophyll cells while another cycle called C₃ cycle takes place in the bundle sheath cells. The example of plants are: sugarcane and corn.

CAM plants are those that follow CAM cycle. The opening of stomata in CAM plants takes place during the night to diffuse in the carbon dioxide and also prevent water loss. This cycle occurs in plants of dry area like cactus and pineapple.

To know more about C₄ plants and CAM plants, here

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