Dark reaction depends upon-

1.	Presence of darkness
2.	Presence of light
3.	Products of light reactions
4.	Products of biosynthetic phase

 

The first dark reaction or CO2 fixation product is-
1. 3C – Organic Acid
2. 6C – Organic Acid
3. 5C – Organic Acid
4. 1C – Organic Acid

The first product of C3 and C4 cycle are:
1. PGA, PGAL
2. PGA, OAA
3. PGAL, RuBP
4. PGAL, OAA

What is the primary acceptor of CO₂ in dark reaction?
1. Ketose sugar
2. Aldose sugar
3. Fatty acid
4. Sucrose

Which of the following is not a step of photosynthesis?
1. Decarboxylation
2. Carboxylation
3. Regeneration
4. Reduction

The order of three steps of Calvin cycle is-
1. Carboxylation- Reduction-Regeneration
2. Reduction-Regeneration- Carboxylation
3. Regeneration-Carboxylation- Reduction
4. Reduction- Carboxylation –Regeneration

Calvin Pathway occurs-
1. Only C₃
2. Only C₄
3. All photosynthetic plants
4. only in C₂ plants

The most crucial step of Calvin cycle-
1. Decarboxylation
2. Carboxylation
3. Regeneration
4. Reduction

How many molecules of 3-PGA are produced during a single run of carboxylation?
1. 3
2. 1
3. 2
4. 4

How many molecules of ATP and NADPH are utilized in the step of reduction?
1. 2,2
2. 2,3
3. 2,4
4. 2,5