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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.
| 151. |
Identify the incorrect statement.(a) Some photosynthetic pigments absorb light of a particular wavelength at a greater strength, while very less at other wavelength(b) Chlorophyll-a absorbs blue-violet and red colour wavelength at a greater strength, while carotenoids absorb light of blue and green region(c) Action spectrum is a graph which shows the degree of absorption of light by a pigment as a function of wavelength(d) Plant leaves appear green due to high amount of chlorophyll in plant, which reflects green colour |
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Answer» The statement (c) is incorrect. The graph showing degree of absorption of light by a pigment as a function of wavelength is called absorption spectrum. Action spectrum on the other hand, shows the degree to which different wavelengths affect the rate of photosynthesis. |
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| 152. |
Which of the following cannot be classified as a mental disorder?(a) Cirrhosis(b) Neurosis(c) Psychosis(d) Epilepsy |
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Answer» Answer is : (a) Cirrhosis Cirrhosis of liver is caused by the chronic intake of alcohol. Neurosis is a class of mental disorders involving chronic distress but neither delusions nor hallucinations. Psychosis is an abnormal condition of the mind. The patient experiences disconnection from reality, e.g. schizophrenia. Epilepsy is mental disorder which occurs as a result of brain injury, stroke, brain tumours. It is characterised by seizures. |
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| 153. |
Identify the correct statement regarding pBR322. It is a : (a) bacteriophage (b) yeast (c) plasmid (d) parasite |
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Answer» Correct Option (c) plasmid |
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| 154. |
The first step in dark reaction of photosynthesis is(a) formation of ATP(b) Excitation of chlorophyll molecule(c) photolysis of water(d) attachment of carbon dioxide to a pentose sugar |
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Answer» Correct Option (d) attachment of carbon dioxide to a pentose sugar |
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| 155. |
Choose the incorrect pair from the following options(a) Ethylene — Gas hormone(b) Abscisic acid — Flowering hormone(c) Auxin — to grow(d) Gibberellins — Gibberella fujikuroi |
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Answer» Correct Option (b) Abscisic acid — Flowering hormone |
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| 156. |
Which of the following is helpful in studying sex-linked characters ? (a) Back cross (b) Test cross (c) Reciprocal cross (d) Trihybrid cross |
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Answer» Correct Option (c) Reciprocal cross |
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| 157. |
Identify the incorrect statement(s) from following options : I. Glycolate is formed, in illuminated chloroplast of C3 plants II. For every 2 glycolate molecules that leaves the chlorplast, one glycerate, derived from glycolate III. One of the 4 carbons from the two glycolates is lost as CO2 IV. As 3-phosphoglycerate, the 3 remaining carbons can reenter the Calvin cycle. (a) II and IV (b) I and III (c) None of these statement is false (d) I and II |
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Answer» Correct Option (c) None of these statement is false |
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| 158. |
Which scientist pair determined the given structure of DNA ?(a) Brenner and Nirenberg(b) Jacob and Monod(c) Watson and Crick(d) Singner and Nicolson |
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Answer» Correct Option (c) Watson and Crick |
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| 159. |
Label the given graph :(i)(ii)(iii)(a)Log phaseExponantial phaseStationary phase(b)Exponantial phaseLog phaseStationary phase(c)Stationary phaseLog phaseExponantial phase(d)Log phaseStationary phaseExponantial phase |
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Answer» Correct Option (a) |
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| 160. |
Which of the following statements correctly describes allosteric enzymes (a) not usually controlled by feedback inbibition (b) Regulatory site may be catalytic site (c) Michaelis-Menten kinetics describe their activity (d) Effectors may enhance or inhibit substrate binding |
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Answer» Correct Option (d) Effectors may enhance or inhibit substrate binding |
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| 161. |
The common mean of transmission of AIDS is :–(a) Sexual intercourse(b) Blood transfusion(c) Placental transfer(d) All of these |
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Answer» Correct Option (d) All of these |
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| 162. |
Palynology is the study of :–[a] spoges [b] pollen grains[c] algae [d] fossils |
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Answer» Correct option [b] pollen grains |
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| 163. |
Identify the incorrect match of a water pollutant with its effect (disease ).(a) Nitrate – Black foot disease(b) Mercury – Minamata disease(c) Cadmium – Itai - Itai disease (d) Fluoride – Fluorosis |
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Answer» Answer is : (a) Nitrate – Black foot disease All the options are correct except (a). The presence of nitrate in water body, causes blue baby syndrome when consumed. This is because the body turns bluish in colour. Arsenic causes black foot disease. |
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| 164. |
High myoglobin content and intermediate glycolytic enzyme activity are the characteristics of which of the following?(a) White fibres type of muscles(b) Fast oxidative or aerobic muscles(c) Cross-bridge structure(d) None of the above |
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Answer» Answer is : (b) Fast oxidative or aerobic muscles Myoglobin content and number of mitochondria are high in some muscles. They are called red muscle fibres. The high myoglobin content in them facilitates production of ATP by oxidative phosphorylation. They also have a moderate ability to generate ATP through glycolytic pathway. In white muscle fibres, there is accumulation of low or no myoglobin. |
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| 165. |
Upon exposure to light, the endosperm becomes chlorophyllous in(a) Raphanus(b) Mathiola(c) Both (a) and (b)(d) None of these |
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Answer» Answer is : (c) Cells of endosperm are generally non-green or non-chlorophyllous. But in Raphanus, Viscum and Mathiola, etc., chlorophyllous endosperm is present (when exposed to light). |
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| 166. |
Phylogenetic system brings about groupings or association according to(a) reproductive similarities(b) morphological characters(c) increasing complexity of body organisation(d) evolutionary trends |
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Answer» Answer is : (d) evolutionary trends In phylogenetic system of classification, organisms are classified according to the evolutionary trends and genetic affinities. This system is also called cladistics. |
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| 167. |
Oligotrophic lakes have(a) low plankton density(b) low primary productivity(c) poor in nutrients(d) All of these |
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Answer» Answer is : (d) Oligotrophic lakes have low plankton (producers) density. As a result, they have low primary productivity and are poor in nutrients. |
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| 168. |
A rectangular bar magnet of area 20 cm2 has ability to produce a magnetic field of 2.5 T at a point 30 cm away from its mid point on axial line. If it is assumed that dipole is surrounded by a spherical region in space, then net magnetic flux passes through the sphere is(a) 0(b) 0.005 Wb(c) 0.15 Wb(d) 0.05 Wb |
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Answer» Answer is : (a) 0 Net magnetic flux through a closed surface is always zero. |
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| 169. |
Gypsum on heating at 120°C 130°C gives: (a) Hemihydrate(b) Monohydrate (c) Dihydrates (d) Anhydrous salt |
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Answer» Correct Option (a) Hemihydrate Explanation : CaSO42H2O + 120°C → CaSO4 .1/2H2O or (CaSO4 ).H2O Gypsum |
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| 170. |
An acyl halide is formed when PCl5 reacts with an(a) amide(b) ester(c) acid(d) alcohol |
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Answer» The correct option is (c) acid. Explanation: Acid can give acyl halide with PCl5 CH3COOH + PCl5⟶ CH3COCl + POCl3 + HCl |
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| 171. |
Hydrogen gas can be produced from? |
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Answer» Hydrogen fuel can be produced from methane or by electrolysis of water. As of 2020, the majority of hydrogen (∼95%) is produced from fossil fuels by steam reforming or partial oxidation of methane and coal gasification with only a small quantity by other routes such as biomass gasification or electrolysis of water. |
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| 172. |
Which of the following pairs of species have the same bond order ?(1) O2, NO+ (2) CN–, CO(3) N2 ,O2- (4) CO, NO |
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Answer» (2) CN– and CO have same no. of electrons and have same bond order equal to 3. |
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| 173. |
The reason for greater range of oxidation states in actinoids is attributed to :(1) actinoid contraction(2) 5f, 6d and 7s levels having comparable energies(3) 4f and 5d levels being close in energies(4) the redioactive nature of actinoids |
| Answer» (2) Minimum or comparable energy gap between 5f, 6d and 7s subshell makes electron excitation easier, hence there is a greater range of oxidation states in actinoids. | |
| 174. |
Which of the following statements is not correct?(1) Ovalbumin is a simple food reserve in eggwhite(2) Blood proteins thrombin and fibrinogen are involved in blood clotting(3) Denaturation makes the proteins more active(4) Insulin maintains sugar level in the blood of a human body. |
| Answer» (3) Due to denaturation of proteins, helix get uncoiled and protein loses its biological activity. | |
| 175. |
An organic compound of molecular fomrula, C8H10O, on reaction with iodine and sodium hydroxide gives a yellow precipitate. The most likely structure for the compound should be :–(a) C6H5CH2CH2OH |
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Answer» Correct option (d) C6H5CHOHCH3 |
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| 176. |
Are Enzymes Destroyed After They ReactAre All Gymnosperms MonocotsAre Enzymes Destroyed By High HeatAre Enzymes ReusableAre Enzymes Specific Or GeneralAre Ferns BryophytesAre Ferns GymnospermsAre Ferns VascularAre Gymnosperms Haploid Or DiploidAre Gymnosperms Heterosporous |
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Answer» • No, Enzymes are not destroyed after they react. They gain their original position after the reaction is complete. They remain unchanged after product is formed and released. • No, All Gymnosperms are not monocots. Some have 8 cotyledons and others can have 18 also. • Yes, Most enzymes are destroyed by high heat because at a particular temperature they are functional. If temperature increases or decreases, then their functioning deteriorates, and they are not able to survive. • Yes, In some reactions enzymes are not completely used, so they can be reused in other reactions. • Enzymes are specific. Each enzyme contains one or two substrate and will accept only that particular substrate. • No, Ferns have true vegetative structure and are vascular plants, but Bryophytes lack true vegetative structure and are non-vascular. • No, Ferns are not gymnosperms because they do not have seeds, whereas gymnosperms have their own seeds. • Yes, Ferns are Vascular plants. They have Xylem and Phloem. • They have both diploid and haploid stages. • Yes. Gymnosperms are heterosporous. They produce 2 different types of spores:- Megaspores and Microspores |
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| 177. |
The cell is fully turgid when one of the following condition fulfilled : (a) Diffusion pressure deficit = Turgor pressure (b) Diffusion pressure dficit = Suction pressure (c) Osmotic pressure = Diffusion pressur deficit (d) Diffusion pressure deficit = zero |
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Answer» Correct Option (d) Diffusion pressure deficit = zero |
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| 178. |
Which of the following statement(s) is/are true for vaccine : (a) collection of attenuated disease causing bacteria and virus (b) collection of microorganism (c) collection of killed a disease causing bacteria and virus (d) Both (a) and (c) |
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Answer» Correct Option (d) Both (a) and (c) |
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| 179. |
Which of the following is the golden age of reptiles ? (a) Mesozoic era (b) Archaeozoic era (c) Coenozoic era (d) paraeozoic era |
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Answer» Correct Option (a) Mesozoic era |
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| 180. |
In our nature, cleistogamous type of flowers are : (a) animal pollinated (b) insect pollinated (c) bird pollinated (d) self-pollinated |
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Answer» Correct Option (d) self-pollinated |
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| 181. |
Blunt ends are produced by which of the following restriction enzyme ? (a) Alu I (b) Pst I (c) Sma I (d) Hind III |
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Answer» Correct Option (a) Alu I |
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| 182. |
Which of the following is not an autosomal recessive trait ? (a) Pehnylketonuria (b) Cystic fibrosis (c) Albinism (d) Polydactyly |
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Answer» Correct Option (d) Polydactyly |
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| 183. |
Bolistic technique is characterisation of : (a) germplasm conservation (b) conjugation (c) tissue culture (d) gene transfer process |
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Answer» Correct Option (d) gene transfer process |
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| 184. |
Which one of the following is Permament cure of Adenosine Deaminase (ADA) deficiency is : (a) enzyme replacement therapy (b) introducing isolated gene from marrow cells producing ADA into the cells at early embryonic stages (c) injecting the functional ADA, CDNA into the patient (d) administering adenosine deaminase through injections |
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Answer» Correct Option (b) introducing isolated gene from marrow cells producing ADA into the cells at early embryonic stages |
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| 185. |
Auxin (IAA) was isolated by Thiamann in 1935 from (a) bryophytes (b) algae (c) fungi (d) pteridophytes |
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Answer» Correct Option (c) fungi |
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| 186. |
Under given suitable conditions, the diffusion pressure deficit will be more than osmotic pressure (a) When osmotic pressure is equal to turgor pressure (b) Whn osmotic pressure is less than turgor pressure (c) When osmotic pressure is greater than turgor pressure (d) When turger pressure is negative |
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Answer» Correct Option (d) When turger pressure is negative |
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| 187. |
The joint between atlas and axis is called (a) angular joint (b) pivot joint (c) saddle joint (d) hinge joint |
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Answer» Correct Option (b) pivot joint |
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| 188. |
Viriods differe from viruses in having : (a) naked DNA molecules only (b) naked DNA packed with viral genome (c) satellite RNA packed with viral genome only (d) naked RNA molecules only |
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Answer» Correct Option (d) naked RNA molecules only |
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| 189. |
The movement of DNA fragments in Gel electrophoresis depends upon? |
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Answer» Gel electrophoresis is a technique used to separate DNA fragments (or other macromolecules, such as RNA and proteins) based on their size and charge. Electrophoresis involves running a current through a gel containing the molecules of interest. Based on their size and charge, the molecules will travel through the gel in different directions or at different speeds, allowing them to be separated from one another.
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| 190. |
Number of cervical vertebrae in mammal are :–(a) 7 (b) 8(c) 12 (d) 6 |
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Answer» Correct Option (a) 7 |
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| 191. |
Hyaluronidase enzyme functions to facilitate :–[a] compatibility of sperm and ovum[b] separation of corona cells[c] preventino of entry of more than one sperms into ovum[d] degeneration of zona pellucida |
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Answer» Correct option [b] separation of corona cells |
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| 192. |
Gause's hypothesis/principle is related to :–[a] principle of competitive exclusion[b] niche specialization[c] iner-specific competition[d] all of these |
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Answer» Correct option [d] all of these |
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| 193. |
Deltoid ridge is present in :–(a) Humerus (b) Tibia - fibula(c) Radio - ulna (d) Femur |
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Answer» Correct Option (a) Humerus |
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| 194. |
End product of anaerobic respiration in humans :–(a) lactic acid(b) ethyl alcohol(c) ethyl alcohol + CO2(d) lactic acid + CO2 |
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Answer» Correct Option (d) lactic acid + CO2 |
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| 195. |
Balancing organ of molluscs is :–[a] radula [b] statocyst [c] osphradium [d] tentacles |
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Answer» Correct option [b] statocyst |
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| 196. |
During nitrogen cycle, nitrites are changed to nitrates by :–[a] Nitrococcus [b] Nitrosomonas[c] Nitrobacter [d] Pseudomonas |
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Answer» Correct option [c] Nitrobacter |
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| 197. |
In root nodules of legumes, leg haemoglobin is important because :–(a) It transport s oxgyen to the root nodule(b) It acts an an oxygen scanvenger(c) It provides energy to the nitrogen fixing bacterium(d) It acts as a catalysts in transmination |
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Answer» Correct Option (b) It acts an an oxygen scanvenger |
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| 198. |
In Bt cotton, a transgenic plant, Bt refers to :–(a) Botanical(b) Beta(c) Biotechnology(d) Bacillus thuringiensis |
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Answer» Correct Option (d) Bacillus thuringiensis |
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| 199. |
In photosynsthesis, photolysis of water is used in :–(a) Reduction of NADP(b) Oxidation of FAD(c) Oxidation of NADP(d) None of these |
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Answer» Correct Option (a) Reduction of NADP |
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| 200. |
Deuterostome condition and indeterminate radial cleavage are characteristics of : – (a) chordates and arthropods(b) chordates and echinoderms(c) arthropods and echinoderms(d) chordates, arthropods and annelids |
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Answer» Correct Option (b) chordates and echinoderms |
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