Top 150+ Solved Photosynthesis MCQ Questions Answer
Q. In C4 plants, carboxylation is twice, it can be represented as
a. Pyruvic acid + CO2 and malic acid + CO2
b. RuBP + CO2 and pyruvic acid + CO2
c. PEPA + CO2 and RuBP + CO2
d. PEPA + CO2 and malic acid + CO2
Q. In non-cyclic photophosphorylation, all the participants acts as electron donor and acceptor except
a. Chl-a of PS I
b. Chl-a of PS II
c. NADP
d. Both (A) and (B)
Q. Which of the following protist is a photoautotroph
a. Thiobacillus
b. Ferrobacillus
c. Diatoms
d. Chlorobium
Q. Photosynthesis takes place
a. Only in green light
b. Only in sunlight
c. In visible light obtained from any source
d. Only in high intensity of light
Q. Chlorophyll-a differes from chlorophyll-b in having—
a. Methly group instead of aldehyde group
b. Aldehyde group instead of methyl group
c. Methyl group instead of ethyl group
d. Only phytol tail instead of head
Q. In non-cyclic photophosphorylation
a. ATP is generated
b. Both PSI and PSII are involved
c. Electron flow is unidirectional
d. All the above
Q. In con-cyclic photophosphorylation, the electron emitted by P680 is replaced by electron from
a. NADP
b. Water
c. Ferridoxin
d. Chlorophyll-a
Q. 85-90% (9/10) of all photosynthesis in the world is carried out by
a. Shrub
b. Algae of the oceans
c. Herbs
d. Scientists in the laboratory
Q. Primary and secondary processes of Photosynthesis takes place in ______ and ______ respectively.
a. Stroma and grana
b. Stroma and lamellae
c. Thylakoid and quantasome
d. Grana and stroma
Q. Which one occurs during both cyclic and non-cyclic photophosphorylation
a. Formation of ATP
b. Release of O2
c. Formation of NADPH2
d. Involvement of both PSI and PSII
Q. The photochemical process in photosynthesis which needs both PSI and PSII also involves
a. Photolysis of water
b. Z-scheme of electron transfer
c. Synthesis of assimilatory power
d. All of these
Q. For synthesis of one molecule of glucose, the requirement of ATP and NADPH2 is respectively
a. 15 and 10
b. 12 and 8
c. 30 and 15
d. 18 and 12
Q. Which of the following element is needed for chlorophyll biosynthesis?
a. Copper
b. Magnesium
c. Calcium
d. Chlorine
Q. The two enzymes responsible for primary carboxylation in C3 and C4 pathway, respectively are
a. RuBP carboxylase and RuBP oxygenase
b. PEP carboxylase and RuBP carboxylase
c. RuBP carboxylase and PEP carboxylase
d. PEP carboxylase and pyruvate carboxylase