1.

    The regeneration phase of the Calvin cycle requires ATP. What is the primary role of ATP in this phase?

    A

    Reduction of 3-PGA to G3P

    B

    Phosphorylation of intermediates to convert them back to RuBP

    C

    Fixation of CO2 to RuBP

    D

    Regeneration of NADPH

    Question Tags
    📚 Subject:Botany
    📑 Chapter:Photosynthesis in Higher Plants
    🎯Topic:Dark Phase
    🎓 Ncert Level:Understanding
    🎯Difficulty :Hard
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :Calvin Cycle, ATP, RuBP Regeneration

    Related Questions

    1.

    The first product of CO2C{O_2} fixation in C4{C_4} pathway is

    A

    Oxaloacetic acid

    B

    RuBP

    C

    PGA

    D

    Inorganic acid

    Question Tags
    📚 Subject:Botany
    📑 Chapter:Photosynthesis in Higher Plants
    🎯Topic:Dark Phase
    🎓 Ncert Level:Remembering
    🎯Difficulty :Medium
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :C4 pathway, CO2 fixation, Oxaloacetic acid

    2.

    Stroma of chloroplast is associated with.

    A

    OEC

    B

    Dark phase

    C

    Non – cyclic electron transport

    D

    Cyclic electron transport

    Question Tags
    📚 Subject:Botany
    📑 Chapter:Photosynthesis in Higher Plants
    🎯Topic:Dark Phase
    🎓 Ncert Level:Remembering
    🎯Difficulty :Medium
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :Chloroplast structure, Photosynthesis, Dark phase

    3.

    Calvin cycle is also called

    A

    Calvin-Benson cycle

    B

    C3{C_3}-cycle

    C

    Reductive pentose pathway

    D

    All of the above

    Question Tags
    📚 Subject:Botany
    📑 Chapter:Photosynthesis in Higher Plants
    🎯Topic:Dark Phase
    🎓 Ncert Level:Remembering
    🎯Difficulty :Medium
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :Photosynthesis, Calvin cycle, Biochemical pathways

    4.

    Number of carboxylation occurs in Calvin cycle is

    A

    1

    B

    2

    C

    3

    D

    6

    Question Tags
    📚 Subject:Botany
    📑 Chapter:Photosynthesis in Higher Plants
    🎯Topic:Dark Phase
    🎓 Ncert Level:Remembering
    🎯Difficulty :Easy
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :Calvin cycle, carboxylation, photosynthesis

    5.

    The first stable product formed after CO2 fixation in the C3 cycle is:

    A

    RuBP

    B

    3-PGA

    C

    G3P

    D

    Glucose

    Question Tags
    📚 Subject:Botany
    📑 Chapter:Photosynthesis in Higher Plants
    🎯Topic:Dark Phase
    🎓 Ncert Level:Remembering
    🎯Difficulty :Medium
    ⚡ Time Required :0.5 mins
    🔄Ncert Concepts :Dark Phase, Calvin Cycle, C3 Cycle, Carbon Fixation, RuBisCO

    6.

    RuBP+O2→XPGA+RuBP + {O_2}\xrightarrow{X}PGA +  Phosphoglycolate.Identify x in the given equation and choose the correct option

    A

    RuBP carboxylase

    B

    RuBP oxygenase

    C

    RuBisCo

    D

    PEP-carboxylase

    Question Tags
    📚 Subject:Botany
    📑 Chapter:Photosynthesis in Higher Plants
    🎯Topic:Dark Phase
    🎓 Ncert Level:Understanding
    🎯Difficulty :Medium
    ⚡ Time Required :2 mins
    🔄Ncert Concepts :Photosynthesis, Photorespiration, RuBisCO, RuBP oxygenase, Carbon Fixation

    7.

    Photorespiration in C3−{C_3} - plants starts from

    A

    Phosphoglycerate

    B

    Phosphoglycolate

    C

    Glycerate

    D

    Glycine

    Question Tags
    📚 Subject:Botany
    📑 Chapter:Photosynthesis in Higher Plants
    🎯Topic:Dark Phase
    🎓 Ncert Level:Remembering
    🎯Difficulty :Medium
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :Photorespiration, C3 plants, Calvin cycle

    8.

    Photosynthesis and respiration are similar because

    I. in eukaryotes, both processes occur in specialised organelles

    II. ATP synthesis in both is explained by chemiosmotic theory

    III. both use ETC

    Select the correct option

    A

    I and II

    B

    II and III

    C

    I and III

    D

    I, II and III

    Question Tags
    📚 Subject:Botany
    📑 Chapter:Photosynthesis in Higher Plants
    🎯Topic:Dark Phase
    🎓 Ncert Level:Analyzing
    🎯Difficulty :Medium
    ⚡ Time Required :2 mins
    🔄Ncert Concepts :photosynthesis, respiration, chemiosmosis, electron transport chain, organelles

    9.

    The enzymatic reactions incorporate CO2C{O_2} into the plants leading to the synthesis of sugar in

    A

    Stroma

    B

    Stroma lamella

    C

    Grana

    D

    Both (a) and (b)

    Question Tags
    📚 Subject:Botany
    📑 Chapter:Photosynthesis in Higher Plants
    🎯Topic:Dark Phase
    🎓 Ncert Level:Remembering
    🎯Difficulty :Easy
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :photosynthesis, carbon fixation, chloroplast structure

    10.

    I. Initial CO2C{O_2} acceptor

    II. Extent of photorespiration

    III. Enzyme catalysing reaction that fixes CO2C{O_2}

    IV. Presence of Calvin cycle

    V. Leaf anatomy

    Which one does not differ in a C3{C_3} and C4−{C_4} - plants?

    A

    I. Initial CO2CO_2 acceptor

    B

    II. Extent of photorespiration

    C

    III. Enzyme catalysing reaction that fixes CO2CO_2

    D

    IV. Presence of Calvin cycle

    Question Tags
    📚 Subject:Botany
    📑 Chapter:Photosynthesis in Higher Plants
    🎯Topic:Dark Phase
    🎓 Ncert Level:Understanding
    🎯Difficulty :Easy
    ⚡ Time Required :2 mins
    🔄Ncert Concepts :Carbon fixation, RuBisCO, PEP carboxylase, C3 photosynthesis, C4 photosynthesis

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