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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 801. |
Enzymes `PEP` carboxylase and `RuBP` carboxylase are located in chloroplasts ofA. CAMB. `C_4`C. Both (a) and (b)D. `C_3` |
| Answer» Correct Answer - C | |
| 802. |
Which pigment acts directly to convert light energy to chemical energy?A. Chlorophyll aB. Chlorophyll bC. XanthophyllD. Carotenoid |
| Answer» Correct Answer - a | |
| 803. |
During light reaction of photosynthesis the electrons lost by pigment system II are compensated byA. `CO_(2)`B. `H_(2)O`C. `O_(2)`D. ATP |
| Answer» Correct Answer - B | |
| 804. |
Water soluble pigment isA. chlorophyllB. caroteneC. phycocyaninD. xanthophyll |
| Answer» Correct Answer - C | |
| 805. |
A reduction in `O_(2)` evolution occurs when light wavelengthA. More than 680 nmB. Less than 680 nmC. Less than 660 nmD. 560 |
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Answer» Correct Answer - A A reduction in `O_(2)` evolution occurs when light wavelengths is more than 680mm (as only PS II activates). |
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| 806. |
Consider the following processes: `O_(2)` evolution 2. `CO_(2)` fixation 3. NADPH formation 4. HMP pathway Which of these do not occur in thylakoids?A. 1, 2 and 4B. 2,3 and 4C. 3 and 4D. 2 and 4 |
| Answer» Correct Answer - D | |
| 807. |
Through which of the following substances the photosystem-I passes an electron to NADP during light reactionsA. CytochromB. plastocyaninC. Ferredoxin (FRS)D. None of these |
| Answer» Correct Answer - C | |
| 808. |
Through which of the following substances the photosystem-I passes an electron to NADP during light reactionsA. CytochromeB. FerrodoximC. PlastocyaninD. Plastoquinone |
| Answer» Correct Answer - B | |
| 809. |
In the absence of `NADP^(+)`, electrons of photonsythetic electron transport system pass toA. Cyt.fB. Cyt. `b_(6)`C. PlastocyaninD. Quinine |
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Answer» Correct Answer - B In the absence of `NADP^(+)` electron transport system pass to Cyt. `b_(6)` |
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| 810. |
Stroma lamellae membrane lacksA. PS I onlyB. PS II onlyC. PS I and electron carriersD. PS II and NADP reductase |
| Answer» Correct Answer - D | |
| 811. |
Assertion :`C_(4)` photosynthesis is more sensitive to low termperature as compared to `C_(3)` photosynthesis . Reason : the rubisco found in `C_(4)` plants is more sensitive to low temperature as compared to `C_(3)` plants.A. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true but R is falseD. If both A and R are false |
| Answer» Correct Answer - C | |
| 812. |
RuBisCO stands forA. Ribulose Bisphosphate Carboxylase OxygenaseB. Ribulose Phosphate Carboxylase OxygenaseC. Ribulose Phosphate Carboxylic OxygenaseD. None of the above |
| Answer» Correct Answer - A | |
| 813. |
A : Tropical plants are more efficient in `CO_(2)` untilization. R : `C_(4)` plants ensure that RuBisCO functions as carboxylase minimising oxygenase acitivity.A. If both Assertion % Reson ar true and the reason is the correct explanation of the asserition the mark (1)B. If both Assertion % Reason are true but the reason, is not the correct explanation of the assertion ,then mark (2)C. If Assetion is true statement but Reason is false , The mark (3)D. If both Assertion and Reason are false statements, the mark (4) |
| Answer» Correct Answer - B | |
| 814. |
Given below are some characteristics of photosynthetic plants. Which of these are true for `C_(4)` plants (i) Rubisco is present in the mesophyll cells (ii) 3-carbons in the primary `CO_(2)` acceptor (iii) The primary `CO_(2)` fixation product is PGA (iv) Possess PEP case. (v) The intitial carboxylation reaction occurs in bundle sheath cells (vi) The calvin cycle takes place in bundle sheath cells (vii) 4-carbon atoms in the primary `CO_(2)` fixation product.A. (i), (iv), (v), (vii)B. (i), (ii), (iii), (iv), (vii)C. (ii), (iii), (iv), (vi), (vii)D. (ii), (iv), (vi), (vii) |
| Answer» Correct Answer - D | |
| 815. |
PEP case and RuBisCo in ` C_(4)` plants are present respectively inA. Cytoplasm and thylakoidsB. Stroma and CytoplasmC. Stroma and thylakoidsD. Cytoplasm and stroma |
| Answer» Correct Answer - D | |
| 816. |
RuBisCo occurs in high quantity as it isA. An oxygenaseB. Catalysing reversible reactionC. Degraded rapidlyD. Very slow acting enzyme |
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Answer» Correct Answer - D `RuBisCO` occurs in high quantity as it as very slow acting enzyme. |
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| 817. |
Light reaction in stroma lamellae of chloroplast results in the production ofA. ATPB. `NADPH_(2)`C. ATP+ NADPHD. `O_(2)` |
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Answer» Correct Answer - A Light reaction in stoma lamellae (PS I) of chloroplast results in the production oflATP. |
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| 818. |
Which one of the following statements regarding `C_4`-plants is false ?A. The primary `CO_2` acceptor is a 5 carbon moleculeB. The initial carboxylation reaction occurs in mesophyllC. The leaves that fix `CO_2` have two cell typesD. The mesophyll cells lack RuBisCO enzyme |
| Answer» Correct Answer - A | |
| 819. |
In which type of reactions related to plantA. Glycolate cycleB. Calvin cycleC. Bacterial photosynthesisD. Glyoxylate cycle |
| Answer» Correct Answer - A | |
| 820. |
During light reaction in photosynthesis the following are formed.A. ATP and sugarB. hydrogen , `O_2` and sugarC. ATP, hydrogen donor and `O_2`D. ATP, hydrogen and `O_2` donor |
| Answer» Correct Answer - C | |
| 821. |
Which chlorophyll does not possess phytolA. Chl aB. Chl bC. chl cD. chl d |
| Answer» Correct Answer - C | |
| 822. |
The first acceptor of electrons from an excited chlorophyll molecule of phtosystem II isA. QuinoneB. CytochormeC. Iron-sulfur proteinD. Ferredoxin |
| Answer» Correct Answer - A | |
| 823. |
Photosystem usually involved in both cyclic and non-cyclic photophosphorylation isA. PS-IB. PS-IIC. Both (a) and (b)D. `P_(890)` |
| Answer» Correct Answer - A | |
| 824. |
In bacterial photosynthesis,A. PS I is presentB. PS II is present who does work of PS (II)C. Both PS I and PS II presentD. None of these are present |
| Answer» Correct Answer - A | |
| 825. |
Primary electron acceptor in cyclic photophosphorylation isA. NADPB. FADC. `CO_2`D. FRS (Iron -sulphur protein) |
| Answer» Correct Answer - D | |
| 826. |
The first acceptor of electrons from an excited chlorophyll molecule of phtosystem II isA. cytochromeB. iron-sulphur proteinC. ferredoxinD. quinone |
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Answer» Correct Answer - D Plastoquinone is the first acceptor of electrons from an excited chlorophyll molecule of photosystem-II. |
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| 827. |
Kranz anatomy is found inA. `C_(3)` plantB. `C_(4)` plantsC. Both `C_(3)` and `C_(4)` plantsD. None of these |
| Answer» Correct Answer - B | |
| 828. |
In photosystem-I the first electron acceptor isA. cytochromeB. plastocyaninC. an iron-sulphur proteinD. ferredoxin |
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Answer» Correct Answer - C In photosystem-I, the primary electron acceptor is probable a Fe-S protein. The reduced primary acceptor transfers the electrons to secondary electron acceptor (most probable `P_(430)`). The sequence of electron transfer is as follows: `underset((chl" "-a^(+)))(P_(700))overset(e^(-))tounderset(("Phyloquinone"))(A_(1))overset(e^(-))tounderset(("Fe-S protein"))(A_(2))overset(e^(-))tounderset((P_(430)))(A_(3))` The reduced `P_(430)` passess its electrons to ferredoxin (Fd) present at outer surface of thylakoid membrane. |
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| 829. |
The first electron acceptor in photosystem-I of cyclic photophosphorylation isA. CytochromeB. PlastocyaninC. FerrodoxinD. Plastoquinone |
| Answer» Correct Answer - C | |
| 830. |
During photorespiration, the oxygen consuming reaction (s) occur inA. Stroma of chloroplasts and mitochondriaB. Stroma of chloroplasts and peroxisomesC. Grana of chloroplasts and peroxisomesD. Stroma and chloroplasts |
| Answer» Correct Answer - B | |
| 831. |
In photosystem-I the first electron acceptor isA. PlastocyaninB. An iron-sulfur proteinC. FerrodoxinD. Cytochorme |
| Answer» Correct Answer - B | |
| 832. |
During photorespiration, the oxygen consuming reaction (s) occur inA. Grana of chloroplasts and peroxisomesB. Stroma of chloroplastsC. Stroma of chloroplasts and mitochondriaD. Stroma of chloroplasts and peroxisomes |
| Answer» Correct Answer - D | |
| 833. |
The translocation of organic solutes in sleve tube membres is supportted byA. Mass flow involving a carrier and ATPB. Cytoplasmic streamingC. Root pressure and transpiration pullD. P-protein |
| Answer» Correct Answer - A | |
| 834. |
CAM helps the plants inA. secondary growthB. disease resistanceC. reproductionD. conserving water |
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Answer» Correct Answer - D CAM plants are mostly succulent xerophytes. The stomata in these plants remain closed during the day. This helps to check the transpiration. In this way, water is conserved. |
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| 835. |
CAM helps the plants inA. ReproductionB. Conservation waterC. Secondary growthD. Disease resistance |
| Answer» Correct Answer - B | |
| 836. |
CAM helps the plants inA. Conserving waterB. Secondary growthC. Disease resistanceD. Reproduction |
| Answer» Correct Answer - A | |
| 837. |
CAM helps the plants inA. Disease resistanceB. ReproductionC. Conserving waterD. Secondary growth |
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Answer» Correct Answer - C CAM helps the plants in conserving water. |
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| 838. |
Presence of bundle sheath is characteristic ofA. `C_(4)` PlantsB. Xerophytic plantsC. Grass familyD. `C_(3)` plants |
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Answer» Correct Answer - A Presence of bundle sheath is characteristic of `C_(3)` plants. |
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| 839. |
Which one of the following organisms is correctly matched with its three characteristicsA. Pea : `C_(3)` pathway, Endospermic seed, vexilary aestivationB. Tomato: Twisted aestivation , Axile palcentation berryC. Onion : Bulb , Imbricate aestivation , Axile placetationD. Maize : `C_(3)` pathway, closed vascular bundles , scutellum |
| Answer» Correct Answer - D | |
| 840. |
Presence of bundle sheath is a characteristic ofA. Xerophytic plantsB. Members of the grass familyC. `C_(4)` plantsD. `C_(3)` plants |
| Answer» Correct Answer - C | |
| 841. |
Write the enzyme which is present most abundantly in the world |
| Answer» Correct Answer - `RuBisCO` | |
| 842. |
Give the example of `C_4` plants |
| Answer» Correct Answer - Sugarcane, Maize and Sorghum | |
| 843. |
Write the characteristics of bundle sheath cells of `C_(4)` plants |
| Answer» Correct Answer - Large number of chloroplast thick walls impervious to gaseous exhanges no intercellular spaces | |
| 844. |
When in plant leaves, chloroplast containing bundle sheath cells surrounds vascular bundles in several layers that anatomy is known as |
| Answer» Correct Answer - Kranz anatomy (`C_4` plants) | |
| 845. |
Melvin Calvin was professor ofA. BotanyB. Plant physiologyC. BiochemistryD. Chemistry |
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Answer» Correct Answer - D Melvin Calvin was the professor of chemistry. |
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| 846. |
Assertion: The proton gradient is broken down due to the movement of protons across the membrane to stroma through the transmembrane channerl of the `F_(0)` of the ATPase. Reason: The breakdonw of proton gradient leads to release of energy. |
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Answer» Correct Answer - B Electron transport in photosynthesis produces a proton gradient. The gradient develops inside the thylakoid lumen in chloroplasts. Proton gradient or high concentration of `H^(+)` in the lumen. The protom gradient is broken down due to movement of protons through tramembrane channes, `F_(0)` of ATPase. The break donw of the gradient provides enough energy to cause a confomational change in the `F_(1)` particle of the ATPase, which makes the enzyme synthesise several molecules of energy-packed ATP. |
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| 847. |
Assertion: ATPase enzyme has two parts, One called the `F_(1)` is embedded in the membrane of thylakoid and forms a transmembrane channel that carries out facilitated diffusion of proton across the membrane. Reason: The other portion is called `F_(0)` and protrudes on the thylakoid membrane on the side that faces the stromaA. If both assertion and reason are true and the reason 1s the correct explanation of the assertion.B. If both assertion and reason are true but reason is not the correct explanation of the assertion.C. If assertion is true but reason is false.D. If both assertion and reason are false. |
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Answer» Correct Answer - D AT Pase enzyme has two parts, one called the `F_(6)` is embedded in the membrane of thylakoid and forms a transmembrane channel that carries out facilitated diffusion of proton across the membrane. The other portion is called `F_(1)` and protrudes on the thylakoid membrane on the side that faces the stroma. |
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| 848. |
Observe the pathway of ATP synthesis through chemiosmosis given below Select the right answer in which correct words for all the four blanks A,B,C and D are indicatedA. A-`F_(0)`,B-Thylakoid membrane, C-Photosystem (II),D-Photosystem (I)B. A-`F_(1)`,B-Thylakoid membrane, C-Photosystem (II),D-Photosystem (I)C. A-`F_(0)`,B-Thylakoid membrane, C-Photosystem (I),D-Photosystem (II)D. A-`F_(1)`,B-Thylakoid membrane, C-Photosystem (I),D-Photosystem (II) |
| Answer» Correct Answer - A | |
| 849. |
Assertion: Chemiosmosis require a membrane, a proton pump, a proton gradient and ATPase. Reason: The proton gradient is broken down due to movement of proton across the membrane to the lumen through the transmembrane channel of the `F_(0)` of the ATPase.A. If both assertion and reason are true and the reason 1s the correct explanation of the assertion.B. If both assertion and reason are true but reason is not the correct explanation of the assertion.C. If assertion is true but reason is false.D. If both assertion and reason are false. |
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Answer» Correct Answer - C Chemiosmosis require a membrane, a proton pump, a proton gradient and ATPase. The proton gradient is broken down due to movement of proton across the membrane to the stroma through the transmembrane channel of the `F_(6)` of the ATPase. |
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| 850. |
Read the given statements and select the correct option. Statement 1: in photosyntheis, during ATP synthesis, protons accumulate in the lumen of thylakoid. statement 2: In respiration, during AtP synthesis protons accumulate in the intermembranal space of mitochondria.A. Both statement 1 and 2 are correct.B. Statement 1 is correct but statement 2 is incorrect.C. Statement 1 is incorrect but statement 2 is correctD. Both statements 1 and 2 are incorrect. |
| Answer» Correct Answer - A | |