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Question
Tropical plants like sugarcane show high efficiency of CO2 fixation because of:
Tropical plants like sugarcane show high efficiency of CO2 fixation because of:
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Solution
The correct option is B Hatch-Slack cycle
Plants that are adapted to dry tropical regions like sugarcane, Sorghum have the C4 pathway (Hatch and Slack Pathway). They lack photorespiration (association of enzyme RuBisCO with oxygen and decrease the fixation of carbon dioxide by the enzyme) due to presence of ‘Kranz’ anatomy. Kranz anatomy is a specialized structure in C4 plants where the mesophyll cells are clustered around the bundle-sheath cells in a ring-like fashion. The number of chloroplasts in the bundle-sheath cells is more than that in the mesophyll cells.
The Calvin cycle is the cycle of chemical reactions performed by plants to “fix” carbon from CO2 into three-carbon sugars.
The photophosphorylation process which results in the movement of the electrons in a cyclic manner for synthesizing ATP molecules is called cyclic photophosphorylation.
The citric acid cycle, also known as the TCA cycle (tricarboxylic acid cycle) or the Krebs cycle is a series of chemical reactions used by all aerobic organisms to release stored energy through the oxidation of acetyl-CoA derived from carbohydrates, fats, and proteins.
Plants that are adapted to dry tropical regions like sugarcane, Sorghum have the C4 pathway (Hatch and Slack Pathway). They lack photorespiration (association of enzyme RuBisCO with oxygen and decrease the fixation of carbon dioxide by the enzyme) due to presence of ‘Kranz’ anatomy. Kranz anatomy is a specialized structure in C4 plants where the mesophyll cells are clustered around the bundle-sheath cells in a ring-like fashion. The number of chloroplasts in the bundle-sheath cells is more than that in the mesophyll cells.
The Calvin cycle is the cycle of chemical reactions performed by plants to “fix” carbon from CO2 into three-carbon sugars.
The photophosphorylation process which results in the movement of the electrons in a cyclic manner for synthesizing ATP molecules is called cyclic photophosphorylation.
The citric acid cycle, also known as the TCA cycle (tricarboxylic acid cycle) or the Krebs cycle is a series of chemical reactions used by all aerobic organisms to release stored energy through the oxidation of acetyl-CoA derived from carbohydrates, fats, and proteins.
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