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C4 cycle

Quiz by N.Noorus Shifa

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9 questions
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  • Q1
    What is the primary function of the C4 cycle in plants?
    To prevent herbivory
    To minimize photorespiration
    To increase water uptake
    To enhance plant growth
    30s
  • Q2
    Which enzyme is responsible for the carboxylation of phosphoenolpyruvate (PEP) in the C4 cycle?
    PEP carboxylase
    Rubisco
    PEP carboxylase kinase
    Malate dehydrogenase
    30s
  • Q3
    In which cell type does the C4 cycle occur?
    Xylem cells
    Bundle sheath cells
    Mesophyll cells
    Stomatal cells
    30s
  • Q4
    Which compound is initially formed during the C4 cycle in plants?
    Malate
    Oxaloacetate
    Pyruvate
    Glucose
    30s
  • Q5
    Which molecule is responsible for shuttling carbon dioxide from mesophyll cells to bundle sheath cells in the C4 cycle?
    Glucose
    Fructose
    Sucrose
    Malate
    30s
  • Q6
    Which enzyme catalyzes the decarboxylation of malate or aspartate in the C4 cycle?
    Rubisco
    PEP carboxylase
    PEP carboxylase kinase
    Malate dehydrogenase
    30s
  • Q7
    Which plant family is known to have the highest number of C4 species?
    Solanaceae
    Asteraceae
    Fabaceae
    Poaceae
    30s
  • Q8
    Which compound is the primary CO2 acceptor in the C4 cycle?
    Ribulose-1,5-bisphosphate (RuBP)
    Pyruvate
    Oxaloacetate
    Phosphoenolpyruvate (PEP)
    30s
  • Q9
    Which of the following plants does not utilize the C4 cycle for photosynthesis?
    Sugar cane plant
    Corn plant
    Tomato plant
    Grapefruit plant
    30s

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