NEET Questions on Photosynthesis | Solve online MCQ Tests on Photosynthesis and get your instant score and answers | Test no. 04
Photosynthesis: MCQs Quiz - 4
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In photosystem-I, the first electron acceptor is
An iron sulphur protein
Both photosynthesis and respiration require
Bacterial photosynthesis involves
PS I only
PS II only
Both PS I and PS II
Either PS I or PS II
As compared to a C3-plant, how many additional molecules of ATP are needed for net production of one molecule of hexose sugar by C4-plants
A process that makes important difference between C3 and C4 plants is
A plant with low CO2 compensation point is:
Which one of the following is not true about the light reactions of photosynthesis?
NADPH is not produced in cyclic electrons transport in light reactions.
The flow of electrons from water to NADP in non-cyclic electron transport produces one ATP
Reactions of the two photosystems are needed for the reduction of NADP
P680 and P700 are the reaction centres of PS I an PS II respectively reactions
Which of the following statements regarding C4 plants is false?
The primary CO2 acceptor is a 5 carbon molecule
The initial carboxylation reaction occurs in mesophyll
The leaves that fix CO2 have two cell types
The mesophyll cells lack RuBisCO enzyme
Which of the following is WRONGLY matched?
Sorghum – Kranz anatomy
PEP carboxylase – Mesophyll cells
Blackman – Law of limiting factors
PS II – P700
The synthesis of one molecule of glucose during Calvin cycle requires
6 molecules of ATP and 12 molecules of NADPH2
12 molecules each of ATP and NADPH2
12 molecules of ATP and 18 molecules of NADPH2
18 molecules of ATP and 12 molecules of NADPH2
The pathway that will produce oxygen during photosynthesis is:
electron transport pathway
noncyclic electron pathway
cyclic electron pathway
The net requirement of assimilator power for the formation of 6 hexose molecules in maize plant is
180 ATP, 72 NADPH
108 ATP,72 NADPH
90 ATP, 60 NAQPH
72 ATP, 48 NADPH
RuBisCO stands for
Ribulose phosphate carboxylic oxygenase
Ribulose phosphate carboxylase oxygenase
Ribulose bisphosphate carboxylase oxygenase
None of the above
Read the following four statements, A, B, C and D and select the right option having both correct statements.
(A) Z scheme of light reaction takes place in presence of PS I only.
(B) Only PS I is functional in cyclic photophosphorylation.
(C) Cyclic photophosphorylation results into synthesis of ATP and NADPH2
(D) Stroma lamellae lack PS II as well as NADP. Options :
B and D
A and B
B and C
C and D
Photosynthesis in C4 plants is relatively less limited by atmospheric CO2 levels because
Effective pumping of CO2 into bundle sheath cells
Rubisco in C4 plants has higher affinity for CO2
Four carbon acids are the primary initial CO2 fixation products
The primary fixation of CO2 is mediated via PEP carboxylase
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Pls explain question no 15
sir 18 atp are requird for one glucose then how u can say 30 ?
30 atp in CAM plants
Sir, would you please send me the explanation of question no. 12
maize is a c4 plant n in c4 plant, 30ATP n 12NADPH r required for formation of 1 glucose molecule. therefore for 6 glucose molecule 6*30=180ATP n 6*12=72NADPH is required
18 ATP and 12 NADPH required in C3 cycle for the synthesis of 1 hexose. For a C4 plant 12 additional ATPs are required to pump 6 CO2 to bundle sheath cells for C3 cycle..