1.

    A scientist isolates chloroplasts and provides them with 14CO2^{14}CO_2 in the dark. After a brief period, the 14C^{14}C is found predominantly in:

    A

    RuBP

    B

    3-PGA

    C

    Glucose

    D

    Triose phosphate

    Question Tags
    📚 Subject:Botany
    📑 Chapter:Photosynthesis in Higher Plants
    🎯Topic:Dark Phase
    🎓 Ncert Level:Application
    🎯Difficulty :Hard
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :Calvin Cycle, Carbon Fixation, Dark Reactions

    Related Questions

    1.

    As compound to a C3−{C_3} - plant, how many additional molecules of ATP are needed for net production of one molecule of hexose sugar by C4−{C_4} - plants?

    A

    2

    B

    6

    C

    0

    D

    12

    Question Tags
    📚 Subject:Botany
    📑 Chapter:Photosynthesis in Higher Plants
    🎯Topic:Dark Phase
    🎓 Ncert Level:Analyzing
    🎯Difficulty :Medium
    ⚡ Time Required :3 mins
    🔄Ncert Concepts :Photosynthesis, C3 pathway, C4 pathway, ATP consumption, Hexose sugar production

    2.

    What is the effect of high CO2C{O_2} concentration and higher values of ATP/ADP ratio?

    A

    Rate of Calvin cycle increased

    B

    Rate of Kreb cycle decreased

    C

    Rate of glycolate cycle decreased

    D

    All of the above

    Question Tags
    📚 Subject:Botany
    📑 Chapter:Photosynthesis in Higher Plants
    🎯Topic:Dark Phase
    🎓 Ncert Level:Analyzing
    🎯Difficulty :Medium
    ⚡ Time Required :3 mins
    🔄Ncert Concepts :Photosynthesis, Calvin cycle, Cellular respiration, Krebs cycle, Glycolate cycle, ATP/ADP ratio, Enzyme regulation

    3.

    During the experiment in laboratory, the thylakoid is some how punctured so that the interior of the thylakoid is no longer separated from stroma. This damage will have the direction effect on

    A

    ATP formation

    B

    Absorption of light

    C

    Flow of electrons from PS-I to PS-II

    D

    All of the above

    Question Tags
    📚 Subject:Botany
    📑 Chapter:Photosynthesis in Higher Plants
    🎯Topic:Dark Phase
    🎓 Ncert Level:Analyzing
    🎯Difficulty :Medium
    ⚡ Time Required :2 mins
    🔄Ncert Concepts :Photosynthesis, Thylakoid membrane, Proton gradient, ATP synthase, Chemiosmosis

    4.

    Which one of the following is wrong in relation to photorespiration?

    A

    It occurs in mitochondria, peroxisomes, and chloroplasts

    B

    It is a wasteful process

    C

    It occurs in C4 plants

    D

    It is the favored pathway for carbon fixation at low temperature

    Question Tags
    📚 Subject:Botany
    📑 Chapter:Photosynthesis in Higher Plants
    🎯Topic:Dark Phase
    🎓 Ncert Level:Analyzing
    🎯Difficulty :Medium
    ⚡ Time Required :2 mins
    🔄Ncert Concepts :photorespiration, C3 plants, C4 plants, chloroplasts, photosynthesis

    5.

    Which of the following statements about the light-independent reactions of photosynthesis is INCORRECT?

    A

    CO2 is fixed

    B

    ATP and NADPH are required

    C

    Glucose is the immediate product

    D

    The reactions occur in the stroma

    Question Tags
    📚 Subject:Botany
    📑 Chapter:Photosynthesis in Higher Plants
    🎯Topic:Dark Phase
    PYQ YEAR: 2015
    🎓 Ncert Level:Analyzing
    🎯Difficulty :Medium
    ⚡ Time Required :1.5 mins
    🔄Ncert Concepts :Photosynthesis, Light-independent reactions, Calvin cycle, Chloroplast structure

    6.

    Which pair is wrong?

    A

    C3{C_3}- Maize

    B

    C4{C_4} - Kranz anatomy

    C

    Calvin cycle - PGA

    D

    C4{C_4} - OAA

    Question Tags
    📚 Subject:Botany
    📑 Chapter:Photosynthesis in Higher Plants
    🎯Topic:Dark Phase
    🎓 Ncert Level:Analyzing
    🎯Difficulty :Medium
    ⚡ Time Required :2 mins
    🔄Ncert Concepts :Photosynthesis, C3 Pathway, C4 Pathway, Calvin Cycle, Kranz Anatomy, Photorespiration

    7.

    During the experiment in laboratory, the thylakoid is some how punctured so that the interior of the thylakoid is no longer separated from stroma. This damage will have the direction effect on

    A

    ATP formation

    B

    Absorption of light

    C

    Flow of electrons from PS-I to PS-II

    D

    All of the above

    Question Tags
    📚 Subject:Botany
    📑 Chapter:Photosynthesis in Higher Plants
    🎯Topic:Dark Phase
    🎓 Ncert Level:Analyzing
    🎯Difficulty :Medium
    ⚡ Time Required :2 mins
    🔄Ncert Concepts :Photosynthesis, Thylakoid, ATP synthesis, Chemiosmosis, Proton gradient

    8.

    Photophosphorylation in chloroplast is most similar to the

    A

    Mitochondrial substrate level phosphorylation

    B

    Mitochondrial oxidative phosphorylation

    C

    Mitochondrial hydrolysis of H2O{H_2}O

    D

    All of the above

    Question Tags
    📚 Subject:Botany
    📑 Chapter:Photosynthesis in Higher Plants
    🎯Topic:Dark Phase
    🎓 Ncert Level:Analyzing
    🎯Difficulty :Easy
    ⚡ Time Required :2 mins
    🔄Ncert Concepts :Photophosphorylation, Oxidative phosphorylation, ATP synthesis, Electron transport chain, Chemiosmosis

    9.

    PEP carboxylase

    I. is involved in atleast some CO2C{O_2} fixation in both C3{C_3} and C4−{C_4} - plants

    II. Catalyses the reaction of fixing CO2C{O_2} into pyruvic acid in bundle sheath cells

    III. is capable of fixing CO2C{O_2} more efficiently at lower atmospheric CO2C{O_2} concentration than RuBP carboxylase

    Select the correct option

    A

    I and II

    B

    I and III

    C

    II 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 :3 mins
    🔄Ncert Concepts :PEP carboxylase, C3 plants, C4 plants, CO2 fixation, RuBP carboxylase, bundle sheath cells, photosynthetic pathways

    10.

    Which of the following statements is incorrect?

    A

    ATP is synthesized through complex V

    B

    Oxidation-reduction reactions produce proton gradient in respiration.

    C

    During aerobic respiration, role of oxygen is limited to the terminal stage.

    D

    In ETC (Electron Transport Chain), one molecule of NADH+H+{\rm{NADH}} + {{\rm{H}}^ + } gives rise to 2 ATP molecules, and one FADH2{\rm{FAD}}{{\rm{H}}_{\rm{2}}} gives rise to 3 ATP molecules

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

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