The first dark reaction or CO2 fixation product is-
a. 3C – Organic Acid
b. 6C – Organic Acid
c. 5C – Organic Acid
d. 1C – Organic Acid

Subtopic:  Dark Reaction : Calvin Cycle |
 82%
From NCERT
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Melvin-Calvin used ------- radioactive in-----studies for the discovery of first CO2 fixation product.
a. 14C , Fungal photosynthesis
b. 14C , Algal photosynthesis
c. 15N , Fungal photosynthesis
d. 15N , Algal photosynthesis

Subtopic:  Dark Reaction : Calvin Cycle |
 92%
From NCERT
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The first product of C3 and C4 cycle are:
a. PGA, PGAL
b. PGA, OAA
c. PGAL, RuBP
d. PGAL, OAA

Subtopic:  CAM Pathway |
 91%
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What is the primary acceptor of CO2 in dark reaction?
a. Ketose sugar
b. Aldose sugar
c. Fatty acid
d. Sucrose

Subtopic:  Dark Reaction : Calvin Cycle |
 77%
From NCERT
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Which of the following is not a step of photosynthesis?
a. Decarboxylation
b. Carboxylation
c. Regeneration
d. Reduction

Subtopic:  Dark Reaction : Calvin Cycle |
 81%
From NCERT
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Calvin Pathway occurs-
a. Only C3
b. Only C4
c. All photosynthetic plants
d. only in C2 plants

Subtopic:  Dark Reaction : Calvin Cycle |
 88%
From NCERT
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The most crucial step of Calvin cycle-
a. Decarboxylation
b. Carboxylation
c. Regeneration
d. Reduction

Subtopic:  Dark Reaction : Calvin Cycle |
 71%
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How many molecules of ATP and NADPH are utilized in the step of reduction?
a. 2,2
b. 2,3
c. 2,4
d. 2,5

Subtopic:  Dark Reaction : Calvin Cycle |
 79%
From NCERT
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For the formation of one molecule of Glucose, how many turns of fixation are required?
a. 3
b. 2
c. 6
d. 4

Subtopic:  Dark Reaction : Calvin Cycle |
 93%
From NCERT
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For the uninterrupted flow of Calvin Cycle, which step is most important?
a. Decarboxylation
b. Carboxylation
c. Regeneration
d. Reduction

Subtopic:  Dark Reaction : Calvin Cycle |
 68%
From NCERT
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