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MCQOPTIONS
This section includes 903 Mcqs, each offering curated multiple-choice questions to sharpen your Current Affairs knowledge and support exam preparation. Choose a topic below to get started.
| 751. |
Over a period of time, mosquitoes have developed resistance to |
| A. | dichlorodiphenyl trichloroethane (DDT) |
| B. | biochemical oxygen demand (BOD) |
| C. | dioxins |
| D. | eutrophication |
| Answer» B. biochemical oxygen demand (BOD) | |
| 752. |
Water acts as a reactant in |
| A. | polymerization |
| B. | condensation |
| C. | oxidation |
| D. | hydrolysis |
| Answer» E. | |
| 753. |
While training for long distances, it is better to train at |
| A. | ground |
| B. | low altitudes |
| C. | zero gravity |
| D. | high altitudes |
| Answer» E. | |
| 754. |
Movements from one place to another is called as |
| A. | sensitivity |
| B. | irritability |
| C. | adaptability |
| D. | locomotion |
| Answer» E. | |
| 755. |
Movement of stomata are maintained by |
| A. | water |
| B. | oxyden |
| C. | stoma |
| D. | hormones |
| Answer» E. | |
| 756. |
Inhabited part of earth in which living organisms and non-living components co-exists is called |
| A. | Ecosystem |
| B. | Community |
| C. | Biosphere |
| D. | population |
| Answer» D. population | |
| 757. |
For excretion, animals with impermeable skin use |
| A. | simple diffusion process |
| B. | produce concentration gradient |
| C. | special excretory glands |
| D. | special excretory organs |
| Answer» E. | |
| 758. |
B-lymphocytes is name given due to relationship with |
| A. | Thymus gland |
| B. | Busra of Fabricius |
| C. | Busra of Thymus |
| D. | Busra of glands |
| Answer» C. Busra of Thymus | |
| 759. |
Flaps of tricuspid valve are attached to fibrous cords called |
| A. | chordeae tendinae |
| B. | venae cavae |
| C. | semi lunar valves |
| D. | tricuspid valves |
| Answer» B. venae cavae | |
| 760. |
Application of biotechnology procedures in agricultural field is classified as |
| A. | white biotechnology |
| B. | red biotechnology |
| C. | blue biotechnology |
| D. | green biotechnology |
| Answer» E. | |
| 761. |
Saliva helps in the conversion of starch to maltose through enzyme |
| A. | pancreatic amylase |
| B. | pepsin |
| C. | salivary amylase |
| D. | maltase |
| Answer» D. maltase | |
| 762. |
Most fish and white meat are |
| A. | starch-free |
| B. | calorie-free |
| C. | fat-free |
| D. | glycogen-free |
| Answer» D. glycogen-free | |
| 763. |
In plants, venation refers to transporting food |
| A. | for storage |
| B. | in shoot |
| C. | through vein network |
| D. | through phloem |
| Answer» D. through phloem | |
| 764. |
Deficiency of ascorbic acid causes |
| A. | rickets |
| B. | beriberi |
| C. | scurvy |
| D. | all of above |
| Answer» D. all of above | |
| 765. |
If heat loss center is activated in hypothalamus, the control mechanism include all, but |
| A. | vasodilation |
| B. | rapid breathing |
| C. | lower metabolic activity |
| D. | lesser convection |
| Answer» E. | |
| 766. |
Rate of transpiration increases in |
| A. | hot weather |
| B. | cold weather |
| C. | rainy day |
| D. | still air |
| Answer» B. cold weather | |
| 767. |
DDT (dichloro-diphenyl-trichloroethane: C₁₄H₉Cl₅) is |
| A. | insoluble in water |
| B. | soluble in water |
| C. | sparingly soluble in water |
| D. | aspiringly insoluble in water |
| Answer» B. soluble in water | |
| 768. |
Dead and hardened cells of epidermis result in |
| A. | hair follicles |
| B. | hair papilla |
| C. | hair |
| D. | hair erector muscles |
| Answer» D. hair erector muscles | |
| 769. |
Urine is formed in |
| A. | cortex |
| B. | medulla |
| C. | renal pelvis |
| D. | nephrons |
| Answer» E. | |
| 770. |
If lead accumulation occurs for long in the body, the outcomes may include |
| A. | death |
| B. | coma |
| C. | lead poisoning |
| D. | all of above |
| Answer» E. | |
| 771. |
People may become blind due to |
| A. | Lead poisoning |
| B. | Mercury poisoning |
| C. | Chlorofluorocarbons exposure |
| D. | Ozone depletion |
| Answer» C. Chlorofluorocarbons exposure | |
| 772. |
In transportation active transport |
| A. | does not require energy |
| B. | can take place against concentration gradient |
| C. | can not be done by root cells |
| D. | is harmful for living cells |
| Answer» C. can not be done by root cells | |
| 773. |
Dietary imbalances cause |
| A. | malnutrition |
| B. | starvation |
| C. | obesity |
| D. | high cholesterol |
| Answer» B. starvation | |
| 774. |
Any abnormality related to rhythm and conduction of heart can be diagnosed with help of |
| A. | ECG |
| B. | Pace maker |
| C. | IVFC |
| D. | Angiography |
| Answer» B. Pace maker | |
| 775. |
Animals maintains concentration of salts and water in their body by adopting |
| A. | diffusion |
| B. | osmosis |
| C. | osmoregulation |
| D. | exosmosis |
| Answer» D. exosmosis | |
| 776. |
Spleen, thymus, tonsils and adenoids produces |
| A. | erythrocytes |
| B. | rhombocytes |
| C. | phagocytes |
| D. | lymphocytes |
| Answer» E. | |
| 777. |
Prothrombin protein acts as a catalyst and help in blood |
| A. | clotting |
| B. | flow |
| C. | pH |
| D. | consistency |
| Answer» B. flow | |
| 778. |
System of classification was invented by a Swedish naturalist |
| A. | Carolus Linnaeus |
| B. | Charles Linnaeus |
| C. | Charles Carnegie |
| D. | Joan-Baptista van Helmont |
| Answer» B. Charles Linnaeus | |
| 779. |
Inferior venacava and superior venacava collect blood from body and pour in heart's |
| A. | right atrium |
| B. | left atrium |
| C. | right ventricle |
| D. | left ventricle |
| Answer» B. left atrium | |
| 780. |
Carbohydrates (CₙH₂ₘOₘ) include all but |
| A. | chitin of the arthropods |
| B. | sugar |
| C. | cellulose |
| D. | dietary fiber |
| Answer» E. | |
| 781. |
If a person receive polio vaccination he would become immune against |
| A. | small pox |
| B. | polio |
| C. | mumps |
| D. | measles |
| Answer» C. mumps | |
| 782. |
Due to osmotic problems in freshwater bony fish, kidneys have to |
| A. | produce concentrated urine |
| B. | reabsorb water |
| C. | produce dilute urine |
| D. | release water |
| Answer» D. release water | |
| 783. |
Fish can be conserved if |
| A. | small fish are not caught |
| B. | indiscriminate fishing is done |
| C. | fishing period is extended |
| D. | fish hasn't laid eggs yet |
| Answer» B. indiscriminate fishing is done | |
| 784. |
AIDS is caused due to |
| A. | sharing injection needles |
| B. | transmission of immunodeficiency virus |
| C. | unsterilized injection needles |
| D. | all of above |
| Answer» E. | |
| 785. |
Selective reabsorption occurs in |
| A. | loop of Henle' |
| B. | glomerulus |
| C. | distal convoluted tubule |
| D. | collecting tubule |
| Answer» B. glomerulus | |
| 786. |
Blood leaves glomerulus through |
| A. | afferent arteriole |
| B. | efferent arteriole |
| C. | convoluted tubules |
| D. | blood capillaries |
| Answer» C. convoluted tubules | |
| 787. |
Essential glucose (C₆H₁₂O₆) and amino acids (R-CH(NH₂)-COOH) are reabsorbed through |
| A. | osmosis |
| B. | concentration gradient |
| C. | active transport |
| D. | blood pressure |
| Answer» D. blood pressure | |
| 788. |
Sugar results after the hydrolysis of |
| A. | peptones |
| B. | carbohydrates |
| C. | trace elements |
| D. | fats |
| Answer» C. trace elements | |
| 789. |
Arsenic is an example of |
| A. | organic waste |
| B. | inorganic waste |
| C. | acid |
| D. | base |
| Answer» C. acid | |
| 790. |
Breathing mechanism includes |
| A. | internal respiration |
| B. | external respiration |
| C. | inspiration |
| D. | all of above |
| Answer» D. all of above | |
| 791. |
More water is reabsorbed in the blood due to |
| A. | more anti-diuretic hormone |
| B. | lesser anti-diuretic hormone |
| C. | active functioning of pancreas |
| D. | inactivity of pituitary gland |
| Answer» B. lesser anti-diuretic hormone | |
| 792. |
Untreated sewage may cause |
| A. | outbreak of epidemic |
| B. | cholera outbreaks |
| C. | typhoid outbreaks |
| D. | all of above |
| Answer» E. | |
| 793. |
Over-breathing is a symptom of |
| A. | less oxygen |
| B. | excess oxygen |
| C. | excess carbon dioxide |
| D. | excess carbon monoxide |
| Answer» C. excess carbon dioxide | |
| 794. |
Beriberi diseases originated in |
| A. | France |
| B. | England |
| C. | China |
| D. | Sweden |
| Answer» D. Sweden | |
| 795. |
In leaves of grasses and maize |
| A. | midrib is absent |
| B. | petiole is absent |
| C. | lamina is absent |
| D. | leaf base is absent |
| Answer» C. lamina is absent | |
| 796. |
In an ecosystem, Pneumatophores grow |
| A. | downward in water |
| B. | downward in soil |
| C. | upward in water |
| D. | upward in soil |
| Answer» D. upward in soil | |
| 797. |
Air inhaled in addition to the tidal air is called |
| A. | complemental air |
| B. | residual air |
| C. | supplemental air |
| D. | saturated air |
| Answer» B. residual air | |
| 798. |
The interdisciplinary field of biotechnology to address biological problems using computation techniques is known as |
| A. | bioremediation |
| B. | bioleaching |
| C. | bioinformatics |
| D. | biodegradation |
| Answer» D. biodegradation | |
| 799. |
Stomatal responses are signaled by guard cells as they can sense |
| A. | light |
| B. | heat |
| C. | humidity |
| D. | All of the Above |
| Answer» E. | |
| 800. |
Heart ca be detected in pulse only by |
| A. | veins |
| B. | capillaries |
| C. | arteries |
| D. | lymphatic vessels |
| Answer» D. lymphatic vessels | |