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This set of Biology Multiple Choice Questions & Answers (MCQs) focuses on Photosynthesis Set 5
Q1 | Which of the following gas would disappear from the atmosphere if all the photosynthetic activitieswere to stop?
- Nitrogen
- Carbondioxide
- Hydrogen
- Oxygen
Q2 | Photo-oxidation of chlorophyll and cell contents as a result of high light intensity is known as
- Solarization
- Photolysis
- Photperiodism
- Photorespiration
Q3 | Temperature is very high but a plant is showing photosynthesis with normal rate, probably it would be
- C3 plant
- Mango plant
- Pea plant
- Sugarcane plant
Q4 | For the process of photosynthesis all except one of the following items are essential. Point out the exception
- CO2, optimum temperature
- Glucose and oxygen
- Water and minerals
- Light and chlorophyll
Q5 | The prerequisities of Calvins cycle are
- H2O, CO2, ATP
- ATP, H2O, NADPH2
- CO2, ATP, NADPH2
- NADPH2, H2O, CO2
Q6 | In the calvin cycle, the assimilatory power is used during
- Formation of PGA
- Conversion of PGA to PGAL
- Formation of fructose 1-6 diphsophate from PGAL
- Formation of glucose from fructose – di- phosphate
Q7 | Which is sensitive to longer wavelength of light?
- Photolysi
- PSI
- PS II
- Photophosphorylation
Q8 | In chrophyll structure Phytol tail is present at
- 3rd carbon of IInd ring
- 2nd carbon of IIIrd ring
- 7th carbon of IVth ring
- 3rd carbon of IVth ring
Q9 | Reduction of co-enzyme NADP depends on
- Reduction of CO2
- Evolution of O2
- Photolysis of water
- Formation of ATP
Q10 | Loculus is the internal space of
- Grana
- Stroma
- Thylakoid
- Quantasome
Q11 | Calvins cycle involves
- Oxidative phosphorylation
- Oxidative carboxylation
- Reductive carboxylation
- Reductive phophorylation
Q12 | In C4 plants, carboxylation is twice, it can be represented as
- Pyruvic acid + CO2 and malic acid + CO2
- RuBP + CO2 and pyruvic acid + CO2
- PEPA + CO2 and RuBP + CO2
- PEPA + CO2 and malic acid + CO2
Q13 | In non-cyclic photophosphorylation, all the participants acts as electron donor and acceptor except
- Chl-a of PS I
- Chl-a of PS II
- NADP
- Both (A) and (B)
Q14 | Ribbon shaped chloroplast is present in
- Zygnema
- Spirogyra
- Chlorobium
- Chromatinum
Q15 | Which of the following protist is a photoautotroph
- Thiobacillus
- Ferrobacillus
- Diatoms
- Chlorobium
Q16 | Photosynthesis takes place
- Only in green light
- Only in sunlight
- In visible light obtained from any source
- Only in high intensity of light
Q17 | Chlorophyll-a differes from chlorophyll-b in having—
- Methly group instead of aldehyde group
- Aldehyde group instead of methyl group
- Methyl group instead of ethyl group
- Only phytol tail instead of head
Q18 | In non-cyclic photophosphorylation
- ATP is generated
- Both PSI and PSII are involved
- Electron flow is unidirectional
- All the above
Q19 | In con-cyclic photophosphorylation, the electron emitted by P680 is replaced by electron from
- NADP
- Water
- Ferridoxin
- Chlorophyll-a
Q20 | 85-90% (9/10) of all photosynthesis in the world is carried out by
- Shrub
- Algae of the oceans
- Herbs
- Scientists in the laboratory
Q21 | Primary and secondary processes of Photosynthesis takes place in ______ and ______ respectively.
- Stroma and grana
- Stroma and lamellae
- Thylakoid and quantasome
- Grana and stroma
Q22 | Which one occurs during both cyclic and non-cyclic photophosphorylation
- Formation of ATP
- Release of O2
- Formation of NADPH2
- Involvement of both PSI and PSII
Q23 | The photochemical process in photosynthesis which needs both PSI and PSII also involves
- Photolysis of water
- Z-scheme of electron transfer
- Synthesis of assimilatory power
- All of these
Q24 | For synthesis of one molecule of glucose, the requirement of ATP and NADPH2 is respectively
- 15 and 10
- 12 and 8
- 30 and 15
- 18 and 12
Q25 | Which of the following element is needed for chlorophyll biosynthesis?
- Copper
- Magnesium
- Calcium
- Chlorine