The Four - Carbon Pathway
C 4 pathway - C 4 plants like maize, sugarcane; pearl millet, etc. have evolved a wonderful mechanism to avoid photorespiration, which is considered a wasteful process. In these plants three or 2 types of photosynthetic cells namely mesophyll cells and bundle sheath cells. The b..
Photorespiration
It has been observed that a high concentration of oxygen, inhibits photosynthesis. This is due to the reason that the CO 2 fixing enzyme RUBP carboxylase not only accepts CO 2 but can also combine with O 2 . Since the reaction is an oxygenation reaction, the same enzyme is called RUBP oxygenase. In..
It has been observed that a high concentration of oxygen, inhibits photosynthesis. This is due to the reason that the CO 2 fixing enzyme RUBP carboxylase not only accepts CO 2 but can also combine with O 2 . Since the reaction is an oxygenation reaction, the same enzyme is called RUBP oxygenase. In..Crassulacean acid metabolism (CAM)
CAM refers to a mechanism of photosynthesis that occurs only in succulents and other plants that grow in dry conditions. a) In CAM plants, CO 2 is taken up by the leaves, which are present on green stems through the stomata. But the stomata remain open only during the night. During the day it rem..
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