MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 200950 Mcqs, each offering curated multiple-choice questions to sharpen your General Knowledge knowledge and support exam preparation. Choose a topic below to get started.
| 15901. |
Photosynthesis cannot continue for long if during light reaction, only cyclic photophosphorylation takes place. This is because ? |
| A. | There is no evolution of O2 |
| B. | Only ATP is formed NADPH+ + H+ is notformed |
| C. | Photosystem I stops getting excited at awavelength of light beyond 680 nm |
| D. | There is unidirectional cyclic movement ofthe electrons |
| Answer» C. Photosystem I stops getting excited at awavelength of light beyond 680 nm | |
| 15902. |
Which of the following had strong navy? |
| A. | Bahmani |
| B. | Chalukya |
| C. | Chola |
| D. | Rashtrakuta |
| Answer» D. Rashtrakuta | |
| 15903. |
The first fertilizer plant in India was established in |
| A. | Trombay |
| B. | Nangal |
| C. | Alwaye |
| D. | Sindri |
| Answer» E. | |
| 15904. |
Assertion: Rhoeo leaves contain anthocyanin pigments in epidermal cells.Reason: Anthocyanins are accessory photosynthetic pigments ? |
| A. | Assertion and Reason are true but theReason is not the correct explanation ofthe Assertion |
| B. | Both Assertion and Reason are true and theReason is the correct explanation of theAssertion |
| C. | Assertion and Reason are false statements |
| D. | Assertion is true statement but Reason isfalse |
| Answer» E. | |
| 15905. |
Match the phenomenon listed under column I with those listed under column II. Select the correct answer from the options given. Column I Column IIA Warburg effect p Change in gene frequency by chanceB Pasteur effect q Postponing severance in the leaves by applying cytokininC Emerson effect r Decline in the consumption of respiratory substrate due to a change from anaerobic to aerobic respirationD Wright effect s Inhibitory effect of O2 on photosynthesis t Enhancement of photosynthesis by subjecting chlorophyll to the effect two different wavelengths of light |
| A. | A= t, B = r, C = p, D = s |
| B. | A = s, B = r, C = t, D = p |
| C. | A = t, B =s, C = p, D = q |
| D. | A = s, B = t, C = q, D = r |
| Answer» C. A = t, B =s, C = p, D = q | |
| 15906. |
In India, the second largest in |
| A. | Bengali |
| B. | Urdu |
| C. | Telugu |
| D. | Marathi |
| Answer» D. Marathi | |
| 15907. |
The Parliamentary System in India has been taken from |
| A. | America |
| B. | Britain |
| C. | Australia |
| D. | Ireland |
| Answer» C. Australia | |
| 15908. |
Carbohydrates are commonly found as starch in plant storage organs. Which of the following five properties of starch (a - e) make it useful as a storage material?(a) Easily translocated(b) Chemically non-reactive(c) Easily digested by animals(d) Osmotically inactive(e) Synthesized during photosynthesisThe useful properties are: |
| A. | (b) and (d) |
| B. | (b) and (c) |
| C. | (a) and (e) |
| D. | (a), (c) and (e) |
| Answer» B. (b) and (c) | |
| 15909. |
The electric supply in India was first started in |
| A. | Kolkata |
| B. | Chennai |
| C. | Mumbai |
| D. | Darjeeling- |
| Answer» E. | |
| 15910. |
Ganong’s respiroscope is used to demonstrate _____. |
| A. | production of carbon dioxide duringaerobic respiration |
| B. | evolution of oxygen during photosynthesis |
| C. | evolution of carbon dioxide duringfermentation |
| D. | production of heat during aerobic respiration |
| Answer» B. evolution of oxygen during photosynthesis | |
| 15911. |
In a CAM plant the concentration of organic acid ? |
| A. | decreases or increases during the day |
| B. | increases during the day |
| C. | increases during night |
| D. | decreases during any time |
| Answer» D. decreases during any time | |
| 15912. |
In CAM plants, CO2 required for photosynthesis enters the plant body during ? |
| A. | Daytime through the lenticels |
| B. | Night when the hydathodes are open |
| C. | Daytime when the stomata are open |
| D. | Night through the stomata which are keptopen |
| Answer» E. | |
| 15913. |
In higher plants, continuity of cytoplasm from one cell to its neighbouring cells is established through ? |
| A. | Symplast |
| B. | Apoplast |
| C. | Leucoplast |
| D. | Chloroplast |
| Answer» B. Apoplast | |
| 15914. |
In sugarcane plant, 14CO2 is fixed in malic acid, in which the enzyme that fixes CO2 is |
| A. | Ribulose phosphate kinase |
| B. | Ribulose biphosphate carboxylase |
| C. | Fructose phosphatase |
| D. | Phosphoenolpyruvic acid carboxylase |
| Answer» E. | |
| 15915. |
The ratio between 2-carbon and 3-carbon intermediates having —NH2 group formed in photosynthetic oxidation cycle is ? |
| A. | 2 : 1 |
| B. | 3 : 2 |
| C. | 1 : 1 |
| D. | 3 : 4 |
| Answer» B. 3 : 2 | |
| 15916. |
In C3 plants, the first stable compound formed after CO2 fixation is ? |
| A. | Oxaloacetic acid |
| B. | Phosphoglyceraldehyde |
| C. | Malic acid |
| D. | 3-phosphoglycerate |
| Answer» E. | |
| 15917. |
Which Mosquito is the Vector of Filaria ? |
| A. | Female Anopheles Mosquito |
| B. | Culex Mosquito |
| C. | Dervity Mosquito |
| D. | None of these |
| Answer» C. Dervity Mosquito | |
| 15918. |
Chemiosmosis hypothesis given by Peter Mitchel proposes the mechanism of ? |
| A. | synthesis of FADH2 |
| B. | synthesis of ATP |
| C. | synthesis of NADH |
| D. | synthesis of NADPH |
| Answer» C. synthesis of NADH | |
| 15919. |
Which Mosquito is the Vector of Malaria ? |
| A. | Female Anopheles Mosquito |
| B. | Culex Mosquito |
| C. | Dervity Mosquito |
| D. | All the above |
| Answer» B. Culex Mosquito | |
| 15920. |
Z, X,V, T, R, ?, |
| A. | O, K |
| B. | N, M |
| C. | K, S |
| D. | P, N |
| Answer» E. | |
| 15921. |
The enzyme responsible for primary carboxylation in C3 plants is |
| A. | Pyruvate carboxylase |
| B. | Succinic dehydrogenase |
| C. | Hexokinase |
| D. | RuBP carboxylase oxygenase |
| Answer» E. | |
| 15922. |
Best defined function of Manganese in green plants is ? |
| A. | Water absorption |
| B. | Photolysis of water |
| C. | Calvin cycle |
| D. | Nitrogen fixation |
| Answer» C. Calvin cycle | |
| 15923. |
Which one of the following is wrong in relation to photorespiration ? |
| A. | It is a characteristic of C4 plants |
| B. | It occurs in daytime only |
| C. | It is a characteristic of C3 plants |
| D. | It occurs in chloroplasts |
| Answer» B. It occurs in daytime only | |
| 15924. |
Which Virus causes Bird Flu ? |
| A. | H1N1 |
| B. | H5N1 |
| C. | H3N1 |
| D. | None of these |
| Answer» C. H3N1 | |
| 15925. |
The following are the branches of dorsal aorta: I. Intercostal II. Phrenic III. Coeliac IV. Anterior mesenteric V. Posterior mesenteric Of these which set of arteries supply the blood to the glands of digestive system: ? |
| A. | IV and V |
| B. | I and II |
| C. | III and IV |
| D. | II and III |
| Answer» D. II and III | |
| 15926. |
Which virus cause Swine Flu ? |
| A. | H1N1 |
| B. | H5N1 |
| C. | H3N1 |
| D. | None of these |
| Answer» B. H5N1 | |
| 15927. |
Which are the diseases caused by Virus ? |
| A. | Chickenpox |
| B. | Measles |
| C. | Poliomyelitis |
| D. | All the above |
| Answer» E. | |
| 15928. |
An artificial pace-maker is implanted subcutaneously and connected to the heart in patients ? |
| A. | with irregularity in the heart rhythm |
| B. | having 80% blockage of the three maincoronary arteries |
| C. | having a very high blood pressure |
| D. | suffering from arteriosclerosis |
| Answer» B. having 80% blockage of the three maincoronary arteries | |
| 15929. |
Given below are four statements (a-d) regarding human blood circulatory system(a) Arteries are thick-walled and have narrow lumen as compared to veins(b) Angina is acute chest pain when the blood circulation to the brain is reduced(c) Persons with blood group AB can donate blood to any person with any blood group under ABO system(d) Calcium ions play a very important role in blood clottingWhich two of the above statements are correct? |
| A. | (c) and (d) |
| B. | (b) and (c) |
| C. | (a) and (d) |
| D. | (a) and (b) |
| Answer» D. (a) and (b) | |
| 15930. |
The phylum chordata is characterised by the presence of |
| A. | spinal cord |
| B. | notochord |
| C. | nerve chord |
| D. | None of these |
| Answer» E. | |
| 15931. |
Which of the following activities is suppressed by the presence of auxins in plants? |
| A. | Growth of lateral buds |
| B. | Cell division |
| C. | Root initiation |
| D. | Development of fleshy fruits |
| Answer» D. Development of fleshy fruits | |
| 15932. |
During ventricular systole ? |
| A. | Oxygenated blood is pumped into the aortaand deoxygenated blood is pumped into thepulmonary artery |
| B. | Oxygenated blood is pumped into thepulmonary vein and deoxygenated blood ispumped into the pulmonary artery |
| C. | Oxygenated blood is pumped into thepulmonary artery and deoxygenated blood ispumped into the artery |
| D. | Oxygenated blood is pumped into the aortaand deoxygenated blood is pumped into thepulmonary vein. |
| Answer» B. Oxygenated blood is pumped into thepulmonary vein and deoxygenated blood ispumped into the pulmonary artery | |
| 15933. |
Maximum amount of oxygen is exchanged from the blood in the ? |
| A. | capillaries surrounding the alveoli |
| B. | left auricle of the heart |
| C. | capillaries surrounding tissue cells |
| D. | arteries of the body |
| Answer» D. arteries of the body | |
| 15934. |
Which of the following has the smallest egg? |
| A. | Ostrich |
| B. | Humming bird |
| C. | Pigeon |
| D. | Homo sapiens |
| Answer» C. Pigeon | |
| 15935. |
The population of which of the following is maximum on the earth? |
| A. | Reptiles |
| B. | Fishes |
| C. | Birds |
| D. | Beetles |
| Answer» E. | |
| 15936. |
B, E, D, F, ?, H, J, ?, L |
| A. | I, M |
| B. | M, I |
| C. | I, N |
| D. | J, M |
| Answer» B. M, I | |
| 15937. |
Coronary heart disease is due to ? |
| A. | Streptococci bacteria |
| B. | Inflammation of pericardium |
| C. | Insufficient blood supply to the heartmuscles |
| D. | Weakening of the heart valves |
| Answer» D. Weakening of the heart valves | |
| 15938. |
Which of the following statements is true for planktons? |
| A. | They live on the surface of lake water. |
| B. | They live on the bottom of lakes. |
| C. | They live on the plants growing in water. |
| D. | They live in the water column. |
| Answer» C. They live on the plants growing in water. | |
| 15939. |
BD, GI, LN, QS, ? |
| A. | TV |
| B. | UW |
| C. | WX |
| D. | VX |
| Answer» E. | |
| 15940. |
Insects form the largest class of animals living on land and sea. They are grouped into |
| A. | 22 orders |
| B. | 26 orders |
| C. | 29 orders |
| D. | 32 orders |
| Answer» D. 32 orders | |
| 15941. |
CE, GI, KM, OQ, ? |
| A. | TW |
| B. | TV |
| C. | SU |
| D. | RT |
| Answer» D. RT | |
| 15942. |
Lichens are formed due to the symbiotic association of |
| A. | moss and fungi |
| B. | bacteria and fungi |
| C. | algae and fungi |
| D. | None of these |
| Answer» D. None of these | |
| 15943. |
The thread like tendons of papillary muscles inserted upon the flaps of tricuspid and bicuspid valves are ? |
| A. | yellow elastin fibres |
| B. | collagen fibres |
| C. | reticulate fibres |
| D. | chordae tendinae |
| Answer» E. | |
| 15944. |
Among the following stem cells, which are found in the umbilical cord? |
| A. | Embryonic stem cells |
| B. | Adult stem cells |
| C. | Cord blood stem cells |
| D. | All of the above |
| Answer» D. All of the above | |
| 15945. |
The largest cell in the human body is |
| A. | Nerve |
| B. | Muscle |
| C. | Liver |
| D. | Kidney |
| Answer» B. Muscle | |
| 15946. |
BF, CH, ?, HO, LT |
| A. | DN |
| B. | EL |
| C. | EK |
| D. | EM |
| Answer» D. EM | |
| 15947. |
The vein that does not directly open into the heart is ? |
| A. | Pulmonary vein |
| B. | Postcaval vein |
| C. | Posterior mesenteric vein |
| D. | Precaval vein |
| Answer» D. Precaval vein | |
| 15948. |
The diploid number of chromosomes in human body is ? |
| A. | 24 |
| B. | 40 |
| C. | 46 |
| D. | 48 |
| Answer» D. 48 | |
| 15949. |
Which of the following when taken by pregnant women, is found to be the cause of deformed children? |
| A. | Glycerol |
| B. | Xylidine |
| C. | Thalidomide |
| D. | None of these |
| Answer» D. None of these | |
| 15950. |
Which chamber of the human heart has the thickest muscular wall? |
| A. | Right ventricle |
| B. | Left ventricle |
| C. | Left auricle |
| D. | Right auricle |
| Answer» C. Left auricle | |