MCQOPTIONS
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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.
| 451. |
Compounds which tend to accumulate in bodies are |
| A. | passed on to final consumers |
| B. | are not excreted from the bodies |
| C. | may contain lead and mercury |
| D. | all of above |
| Answer» E. | |
| 452. |
In guard cells, Potassium ions (K⁺) combined with sugars lead to |
| A. | lower the water potential in guard cells |
| B. | increase the water potential in guard cells |
| C. | become turgid |
| D. | increased temperature of guard cells |
| Answer» B. increase the water potential in guard cells | |
| 453. |
All are gastric juices, but, |
| A. | rennin |
| B. | pepsin |
| C. | mucin |
| D. | hydrochloric acid |
| Answer» D. hydrochloric acid | |
| 454. |
Loss of equilibrium in energy intake and energy expenditure results in |
| A. | malnutrition |
| B. | over-nutrition |
| C. | kwashiorker |
| D. | obesity |
| Answer» D. obesity | |
| 455. |
In each villus, fats is transported through |
| A. | lymphatic capillary |
| B. | blood vessels |
| C. | microvilli |
| D. | vilus |
| Answer» B. blood vessels | |
| 456. |
When blood starts mixing between two atria and that blood reaches new born baby it?s disease known as |
| A. | pink babies |
| B. | blue babies |
| C. | abnormal babies |
| D. | blue infants |
| Answer» C. abnormal babies | |
| 457. |
Fungi stores carbohydrates (CₙH₂ₘOₘ) in the form of |
| A. | spores |
| B. | glucose |
| C. | galactose |
| D. | glycogen |
| Answer» E. | |
| 458. |
Which one is right about Glycerol (C₃H₈O₃) |
| A. | soluble starch |
| B. | soluble in water |
| C. | insoluble in water |
| D. | deposited around kidneys and under the skin |
| Answer» C. insoluble in water | |
| 459. |
Chlorophyll is a chemical substance, exists in chloroplasts of plants, with the property of |
| A. | green in color |
| B. | changeable through light spectrum. |
| C. | not green in color |
| D. | absorbing red and blue light more, then other colors. |
| Answer» B. changeable through light spectrum. | |
| 460. |
Incomplete burning of fuel causes |
| A. | decrease in annual rain fall |
| B. | decay of fossil fuels |
| C. | rapid sheet erosion |
| D. | pollution |
| Answer» E. | |
| 461. |
Harmful substances introduced in the air includes all, but |
| A. | carbon dioxide |
| B. | lead |
| C. | zinc |
| D. | nitrogen oxide |
| Answer» D. nitrogen oxide | |
| 462. |
Exchange of gases in bark of plants Is attained by help of |
| A. | stomata |
| B. | roots |
| C. | lenticels |
| D. | cuticle |
| Answer» D. cuticle | |
| 463. |
Upon entering through stomata, the leaves get damaged and plant dies. This pollutant is |
| A. | carbon dioxide |
| B. | lead |
| C. | carbon monoxide |
| D. | sulphur dioxide |
| Answer» E. | |
| 464. |
After photosynthesis, the excess glucose (C₆H₁₂O₆) is converted into |
| A. | cellulose |
| B. | amino acids in leaves |
| C. | sucrose |
| D. | fats |
| Answer» D. fats | |
| 465. |
If the trees are cleared, annual rain fall |
| A. | increases causing flood |
| B. | decreases and the area becomes dry |
| C. | decreases but increases moisture |
| D. | increases but decreases moisture |
| Answer» C. decreases but increases moisture | |
| 466. |
Blood entering the lungs contain very |
| A. | little oxygen (O₂) only |
| B. | high carbon dioxide (CO₂) only |
| C. | low carbon dioxide (CO₂) |
| D. | little oxygen (O₂) and high carbon dioxide (CO₂) |
| Answer» E. | |
| 467. |
Oxidation does not involve |
| A. | gain of electrons |
| B. | addition of oxygen |
| C. | loss of hydrogen |
| D. | gain of energy |
| Answer» B. addition of oxygen | |
| 468. |
Functions of the carbohydrates (CₙH₂ₘOₘ) include all but production of |
| A. | amino acids |
| B. | fats |
| C. | cellulose cell wall |
| D. | antibodies to combat disease |
| Answer» E. | |
| 469. |
Kingdom is further sub-divided into |
| A. | genre |
| B. | species |
| C. | classes |
| D. | phyla |
| Answer» E. | |
| 470. |
Rickets is caused due to the deficiency of |
| A. | Sodium |
| B. | chlorine |
| C. | Iodine |
| D. | Calcium |
| Answer» E. | |
| 471. |
Transport system to carry substances from one part of body to the other is called |
| A. | blood system |
| B. | lymphatic system |
| C. | digestive system |
| D. | blood and lymphatic system |
| Answer» E. | |
| 472. |
Absence of cross-walls and protoplasm enable the water to move through |
| A. | xylem |
| B. | phloem |
| C. | epithelial tissues |
| D. | mesophyll layer |
| Answer» B. phloem | |
| 473. |
Aluminum (Al) salts may become fatal to fish if allowed to react with |
| A. | soil in the rivers |
| B. | soil in the lakes |
| C. | fossil fuel |
| D. | gaseous pollutants like acid rains |
| Answer» E. | |
| 474. |
Upon the completion of the life cycle, Spleen and liver destroy |
| A. | erythrocytes |
| B. | leucocytes |
| C. | platelets |
| D. | antibodies |
| Answer» B. leucocytes | |
| 475. |
In protein structure, a hydrocarbon side chain is denoted through |
| A. | P |
| B. | Q |
| C. | R |
| D. | S |
| Answer» D. S | |
| 476. |
Denatured protein enzymes are but |
| A. | more soluble |
| B. | low coagulation |
| C. | easily affected by acids and alkaline substances |
| D. | sparingly insoluble |
| Answer» D. sparingly insoluble | |
| 477. |
Blood enters glomerulus through |
| A. | afferent arteriole |
| B. | efferent arteriole |
| C. | convoluted tubules |
| D. | blood capillaries |
| Answer» B. efferent arteriole | |
| 478. |
Use of fossil fuels causes |
| A. | pollution |
| B. | conservation of resources |
| C. | global warming |
| D. | infections |
| Answer» B. conservation of resources | |
| 479. |
In each villus, the sugars and amino acids are diffused in |
| A. | lymphatic capillary |
| B. | blood vessels |
| C. | microvilli |
| D. | large intestines |
| Answer» C. microvilli | |
| 480. |
Enzyme to digest starch (C₆H₁₀O₅)n to sugar maltose (C₁₂H₂₂O₁₁) is |
| A. | protease |
| B. | amylase |
| C. | pepsin |
| D. | maltase |
| Answer» C. pepsin | |
| 481. |
Passive immunity is developed by injecting antibodies in form of |
| A. | anti-bacterial |
| B. | anti-fungal |
| C. | anti-serum |
| D. | antis era |
| Answer» E. | |
| 482. |
Granulocytes include |
| A. | neutrophills |
| B. | eosinophills |
| C. | basophills |
| D. | All of the Above |
| Answer» E. | |
| 483. |
In ethanol (C₂H₅OH) emulsion test, the resulting emulsion is of |
| A. | sky blue color |
| B. | cloudy white color |
| C. | cranberry pink color |
| D. | violet color |
| Answer» C. cranberry pink color | |
| 484. |
Few enlarged alveoli vs. many minute alveoli pose the risk of |
| A. | production of mucus in air passages |
| B. | inefficient exchange of gases |
| C. | blood clotting |
| D. | dull and insensitive brain |
| Answer» C. blood clotting | |
| 485. |
The function of photosynthesis is taken up by green shoots in |
| A. | hydrophytes |
| B. | xerophytes |
| C. | herbaceous |
| D. | cortex |
| Answer» C. herbaceous | |
| 486. |
In a healthy lung, the air spaces or air sacs are |
| A. | few |
| B. | in the form of large air sacs |
| C. | too fine to be visible |
| D. | carcinogenic |
| Answer» D. carcinogenic | |
| 487. |
Most fertile layer of soil is |
| A. | top layer |
| B. | organic layer |
| C. | middle layer |
| D. | lower layer |
| Answer» B. organic layer | |
| 488. |
During respiration, the carbon dioxide (CO₂) is |
| A. | produced |
| B. | released in the environment |
| C. | absorbed |
| D. | depleted |
| Answer» C. absorbed | |
| 489. |
Common name of glycogen (C₂₄H₄₂O₂₁) is |
| A. | plant starch |
| B. | animal starch |
| C. | fungal starch |
| D. | algae starch |
| Answer» C. fungal starch | |
| 490. |
Ions in apoplast path way are further prevented for progress by |
| A. | endodermis |
| B. | ectodermis |
| C. | casparian strips |
| D. | xylem |
| Answer» D. xylem | |
| 491. |
Antibodies are manufactured by |
| A. | antigens |
| B. | B-lymphocyte |
| C. | T-lymphocytes |
| D. | A-lymphocytes |
| Answer» C. T-lymphocytes | |
| 492. |
Excretion is similar to |
| A. | defecation |
| B. | egestion |
| C. | removal of metabolic wastes |
| D. | absorption of useful minerals |
| Answer» D. absorption of useful minerals | |
| 493. |
Enzymes are largely composed of |
| A. | fat |
| B. | carbohydrates |
| C. | proteins |
| D. | minerals |
| Answer» D. minerals | |
| 494. |
Many freshwater fish |
| A. | can live in oceans |
| B. | cannot live in oceans |
| C. | cannot live in the river |
| D. | cannot live in streams |
| Answer» C. cannot live in the river | |
| 495. |
Pellets are made from |
| A. | dead plants |
| B. | dead animals |
| C. | through fungal action |
| D. | through mixing ethanol and bacteria |
| Answer» C. through fungal action | |
| 496. |
An increase in water potential refers to |
| A. | more osmotic pressure |
| B. | a drop in osmotic pressure |
| C. | more active transport |
| D. | excessive selective reabsorption |
| Answer» C. more active transport | |
| 497. |
Fructose (C₁₂H₂₂O₁₁) is commonly found in |
| A. | animals |
| B. | plants |
| C. | insects |
| D. | fish |
| Answer» C. insects | |
| 498. |
Profuse growth of algae occurs due to |
| A. | hydrogen sulphide in water |
| B. | nitrates and phosphates in water |
| C. | carbon dioxide in water |
| D. | chlorine in water |
| Answer» C. carbon dioxide in water | |
| 499. |
High concentrations of carbon monoxide (CO) |
| A. | reduces capacity of blood transport |
| B. | reduces capacity of oxygen transportation through blood in the body |
| C. | is caused due to incomplete fossil decay |
| D. | is caused due to smog formation |
| Answer» C. is caused due to incomplete fossil decay | |
| 500. |
As compared to carbohydrates, fats are lower in the proportion of |
| A. | hydrogen |
| B. | oxygen |
| C. | carbon |
| D. | nitrogen |
| Answer» C. carbon | |