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.

    In which type of reactions related to plant photosynthesis peroxisomes are involved?

    A

    Glycolate cycle

    B

    Calvin cycle

    C

    Bacterial photosynthesis

    D

    Glyoxylate cycle

    Question Tags
    📚 Subject:Botany
    📑 Chapter:Photosynthesis in Higher Plants
    🎯Topic:Dark Phase
    🎓 Ncert Level:Remembering
    🎯Difficulty :Medium
    ⚡ Time Required :2 mins
    🔄Ncert Concepts :Photosynthesis, Peroxisomes, Glycolate cycle, Calvin cycle, Glyoxylate cycle

    2.

    The first stable product of CO2CO_2 fixation in Sorghum during C4C_4 photosynthesis is:

    A

    Oxaloacetic acid

    B

    3-phosphoglycerate

    C

    Malate or aspartate

    D

    Ribulose-1,5-bisphosphate (RuBP)

    Question Tags
    📚 Subject:Botany
    📑 Chapter:Photosynthesis in Higher Plants
    🎯Topic:Dark Phase
    PYQ YEAR: 2021
    🎓 Ncert Level:Understanding
    🎯Difficulty :Medium
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :Photosynthesis, C4 cycle

    3.

    Which of the following statements about factors affecting photosynthesis is INCORRECT?

    A

    Light intensity affects the rate of photosynthesis.

    B

    Carbon dioxide concentration influences the rate of photosynthesis.

    C

    Availability of water affects the rate of photosynthesis.

    D

    High temperature always promotes photosynthesis.

    Question Tags
    📚 Subject:Botany
    📑 Chapter:Photosynthesis in Higher Plants
    🎯Topic:Dark Phase
    PYQ YEAR: 2017
    🎓 Ncert Level:Understanding
    🎯Difficulty :Medium
    ⚡ Time Required :2 mins
    🔄Ncert Concepts :Photosynthesis, Limiting Factors

    4.

    Carboxylation (C3−{C_3} - cycle) is the fixation of Co2C{o_2} into

    A

    Amino acid

    B

    Cholesterol ring

    C

    Proteins

    D

    Organic intermediate

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

    5.

    In the C4C_4 photosynthetic pathway of sugarcane, the primary product of CO2CO_2 fixation is:

    A

    3-phosphoglycerate

    B

    Malate

    C

    Oxaloacetic acid

    D

    Ribulose-1,5-bisphosphate

    Question Tags
    📚 Subject:Botany
    📑 Chapter:Photosynthesis in Higher Plants
    🎯Topic:Dark Phase
    PYQ YEAR: 2021
    🎓 Ncert Level:Understanding
    🎯Difficulty :Medium
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :Photosynthesis, C4 cycle

    6.

    To form one molecule of glyceraldehydes phosphate in Calvin cycle

    A

    9 ATP and 36 NADPH are required

    B

    6 ATP and 6 NADPH are required

    C

    3 ATP and 3 NADPH are required

    D

    9 ATP and 6 NADPH are required

    Question Tags
    📚 Subject:Botany
    📑 Chapter:Photosynthesis in Higher Plants
    🎯Topic:Dark Phase
    🎓 Ncert Level:Remembering
    🎯Difficulty :Medium
    ⚡ Time Required :2 mins
    🔄Ncert Concepts :Calvin Cycle, ATP, NADPH, Glyceraldehyde-3-phosphate

    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.

    In a CAM-plant, the concentration of organic acid

    A

    Increases during the day

    B

    Decreases or increases during the day

    C

    Increases during night

    D

    Decreases during any time

    Question Tags
    📚 Subject:Botany
    📑 Chapter:Photosynthesis in Higher Plants
    🎯Topic:Dark Phase
    🎓 Ncert Level:Remembering
    🎯Difficulty :Medium
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :CAM photosynthesis, organic acid concentration

    9.

    Presence of bundle sheath is a characteristic of

    A

    Xerophytic plants

    B

    Members of grass family

    C

    C4−{C_4} - plants

    D

    C3−{C_3} - plants

    Question Tags
    📚 Subject:Botany
    📑 Chapter:Photosynthesis in Higher Plants
    🎯Topic:Dark Phase
    🎓 Ncert Level:Remembering
    🎯Difficulty :Medium
    ⚡ Time Required :2 mins
    🔄Ncert Concepts :Plant anatomy, Photosynthesis, C4 pathway, Bundle sheath

    10.

    In bundle, sheath cells are the large cells around the

    A

    Vascular bundles of C4−{C_4} - plants

    B

    Vascular bundles C3−{C_3} - plants

    C

    Vascular bundles of C2−{C_2} - plants

    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 :Plant Anatomy, Photosynthesis, C4 Photosynthesis

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