MCQOPTIONS
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MCQOPTIONS
This section includes 1075 Mcqs, each offering curated multiple-choice questions to sharpen your Biology knowledge and support exam preparation. Choose a topic below to get started.
| 301. |
Greater population can be supported on the earth only if we eat more |
| A. | mutton |
| B. | eggs |
| C. | plant products |
| D. | beef |
| Answer» D. beef | |
| 302. |
Functional unit of Kidney |
| A. | Axon |
| B. | Neuron |
| C. | Nephron |
| D. | Artery |
| Answer» D. Artery | |
| 303. |
Biodegradable wastes can usually be converted into useful substances with the help of |
| A. | Bacteria |
| B. | Nuclear proteins |
| C. | Radioactive substances |
| D. | Viruses |
| Answer» B. Nuclear proteins | |
| 304. |
In which one of the following is swim bladder absent ? |
| A. | Cuttlefish |
| B. | Bony fish |
| C. | Cartilaginous fish |
| D. | |
| E. | Silverfish |
| Answer» D. | |
| 305. |
Pigeon milk is produced by |
| A. | Crop |
| B. | Birds |
| C. | Mammals |
| D. | All of the above |
| Answer» C. Mammals | |
| 306. |
From which one of the following is quinine extracted ? |
| A. | Sarpagandha |
| B. | Opium |
| C. | Cinchona |
| D. | Datura |
| Answer» D. Datura | |
| 307. |
The only bird that flies backward is |
| A. | Sparrow |
| B. | Koel |
| C. | Siberian Crane |
| D. | |
| E. | Humming birdl |
| Answer» E. Humming birdl | |
| 308. |
The tallest plant in the world is |
| A. | Eucalyptus |
| B. | Pterocarpus |
| C. | Polyalthia |
| D. | Tectona |
| Answer» B. Pterocarpus | |
| 309. |
Which of the following is used for wrapping of fractured bones? |
| A. | White cement |
| B. | White lead |
| C. | Zinc oxide |
| D. | Plaster of Paris |
| Answer» E. | |
| 310. |
The acid stored in batteries is : |
| A. | Sulphuric acid |
| B. | Nitric acid |
| C. | Hydrochloric acid |
| D. | Acetic acid |
| Answer» B. Nitric acid | |
| 311. |
The biological process in which both aerobes and anaerobes degrade organic matter is |
| A. | Manuring |
| B. | Composting |
| C. | Digesting |
| D. | Nitrifying |
| Answer» C. Digesting | |
| 312. |
In the resistance colour code, the fourth band signifies |
| A. | tolerance level |
| B. | power of ten |
| C. | the total value of resistance |
| D. | the material of the resistor |
| Answer» B. power of ten | |
| 313. |
Bio-magnification implies |
| A. | Toxic matters are magnified |
| B. | Living beings are magnified |
| C. | Light is magnified |
| D. | |
| E. | Food is magnified |
| Answer» B. Living beings are magnified | |
| 314. |
Which word is common in the botanical names of trees like Ashoka, Tamarind or Coral ? |
| A. | Terminalia |
| B. | Salix |
| C. | Indica |
| D. | Acacia |
| Answer» D. Acacia | |
| 315. |
Penicillin is isolated from : |
| A. | Fungi |
| B. | Algae |
| C. | Virus |
| D. | Bacteria |
| Answer» B. Algae | |
| 316. |
Which virus from the following combinations is contagious for human beings ? |
| A. | H5N1 |
| B. | H1N5 |
| C. | H2N3 |
| D. | H4N2 |
| Answer» B. H1N5 | |
| 317. |
Drying oils contain a fairly large proportion of |
| A. | fats |
| B. | proteins |
| C. | saturated fatty acids |
| D. | unsaturated fatty acids |
| Answer» E. | |
| 318. |
Opium is a plant product obtained from |
| A. | dried leaves |
| B. | dried latex |
| C. | roots |
| D. | stem bark |
| Answer» C. roots | |
| 319. |
The antibiotic Ampicillin is : |
| A. | a synthetic drug |
| B. | obtained from a bacterium |
| C. | obtained from a plant extract |
| D. | a semi-synthetic drug |
| Answer» C. obtained from a plant extract | |
| 320. |
The number of chromosomes present in the somatic cell of the human cell is |
| A. | 23 |
| B. | 44 |
| C. | 46 |
| D. | 92 |
| Answer» D. 92 | |
| 321. |
Which of the following animals has a clitellum ? |
| A. | Millipede |
| B. | Centipede |
| C. | Earthworm |
| D. | Ringworm |
| Answer» D. Ringworm | |
| 322. |
Heavy alcohol consuming people generally die of |
| A. | blood cancer |
| B. | cirrhosis |
| C. | liver or stomach cancer |
| D. | weakening of heart muscles leading to cardiac arrest |
| Answer» C. liver or stomach cancer | |
| 323. |
Stone Cancer occurs due to : |
| A. | Acid rain |
| B. | Global warming |
| C. | Radioactivity |
| D. | |
| E. | Bacterial action |
| Answer» B. Global warming | |
| 324. |
Which of the following is a deficiency disease ? |
| A. | Asthma |
| B. | Jaundice |
| C. | Scurvy |
| D. | Cancer |
| Answer» D. Cancer | |
| 325. |
The function of the heart is to |
| A. | Supply oxygen to the tissues |
| B. | carry carbon dioxide from the tissues |
| C. | throw away waste materials |
| D. | pump blood to different parts of the body |
| Answer» E. | |
| 326. |
Which of the following is called the powerhouse of the cell ? |
| A. | Nucleus |
| B. | Lysosome |
| C. | Chromosome |
| D. | Mitochondrion |
| Answer» E. | |
| 327. |
The red colour of human blood is due to |
| A. | myoglobin |
| B. | hemoglobin |
| C. | immunoglobulin |
| D. | haptoglobin |
| Answer» C. immunoglobulin | |
| 328. |
The functional unit of the kidney is |
| A. | neuron |
| B. | glomerulus |
| C. | nephron |
| D. | ureter |
| Answer» D. ureter | |
| 329. |
Virus in Latin means |
| A. | Sweet |
| B. | Small |
| C. | Fluid |
| D. | Poison |
| Answer» E. | |
| 330. |
Which of the following is the longest vein in the human body ? |
| A. | Trochlear |
| B. | Inferior vena cava |
| C. | Saphenous vein |
| D. | Trigeminal |
| Answer» D. Trigeminal | |
| 331. |
Plague is caused by ____. |
| A. | Bacteria |
| B. | Protozoa |
| C. | Virus |
| D. | All of the above |
| Answer» B. Protozoa | |
| 332. |
The curcumin is isolated from |
| A. | Garlic |
| B. | Turmeric |
| C. | Sunflower |
| D. | Rose flower |
| Answer» C. Sunflower | |
| 333. |
Mycoplasma is associated with a disease that affects the organs of |
| A. | respiration |
| B. | excretion |
| C. | reproduction |
| D. | digestion |
| Answer» B. excretion | |
| 334. |
Which of the following processes does not increase the amount of carbon dioxide in air ? |
| A. | Breathing |
| B. | Photosynthesis |
| C. | Burning of petrol |
| D. | Aerobic decay of vegetation |
| Answer» C. Burning of petrol | |
| 335. |
Acquired Immuno-Deficiency Syndrome (AIDS) is caused by |
| A. | protozoa |
| B. | virus |
| C. | fungus |
| D. | bacteria |
| Answer» C. fungus | |
| 336. |
The source of the enzyme, diastase is |
| A. | salivary gland |
| B. | stomach |
| C. | liver |
| D. | pancreas |
| Answer» B. stomach | |
| 337. |
The cells which are responsible for the production of antibodies are |
| A. | red blood cells |
| B. | neutrophils |
| C. | lymphocytes |
| D. | platelets |
| Answer» D. platelets | |
| 338. |
The gene which exhibites multiple effects is known as : |
| A. | Pseudogene |
| B. | Pleiotropic |
| C. | Complementary |
| D. | Polygene |
| Answer» C. Complementary | |
| 339. |
Which of the following is a good source of Vitamin E ? |
| A. | Meat |
| B. | Ghee |
| C. | Yellow Yolk |
| D. | Fresh Vegetables |
| Answer» E. | |
| 340. |
Which one of the following is not a benefit of saliva ? |
| A. | It facilitates swallowing |
| B. | It increases RBCs in the body |
| C. | It keeps the mouth and teeth clean |
| D. | It aids speech by facilitating movements of lips and tongue |
| Answer» C. It keeps the mouth and teeth clean | |
| 341. |
How many valves does a human heart have? |
| A. | Four |
| B. | Three |
| C. | |
| D. | Two |
| E. | One |
| Answer» B. Three | |
| 342. |
Tobacco smoke is injurious to health because it contains : |
| A. | Carbon monoxide |
| B. | Nicotine |
| C. | Polycyclic aromatic hydrocarbons |
| D. | Melathene |
| Answer» B. Nicotine | |
| 343. |
Rheumatic heart disease is treated with the help of: |
| A. | Aspirin |
| B. | Streptomycin |
| C. | Methyl dopa |
| D. | Penicillin |
| Answer» B. Streptomycin | |
| 344. |
Which of the following causes Malaria ? |
| A. | Insect |
| B. | Bacteria |
| C. | Protozoa |
| D. | Virus |
| Answer» D. Virus | |
| 345. |
Tuberculosis infection is by means of : |
| A. | Mycobacterium avonin |
| B. | Staphylococcus |
| C. | Mycobacterium tuberculosis |
| D. | Streptococcus |
| Answer» D. Streptococcus | |
| 346. |
Fiber diet includes : |
| A. | glycogen |
| B. | proteins |
| C. | cellulose |
| D. | fats |
| Answer» D. fats | |
| 347. |
Which one of the following gives energy to our body ? |
| A. | Vitamins |
| B. | Water |
| C. | Carbohydrates |
| D. | Proteins |
| Answer» D. Proteins | |
| 348. |
The element which is required by the plant in large quantity : |
| A. | Calcium |
| B. | Nitrogen |
| C. | Phosphorus |
| D. | Sulphur |
| Answer» C. Phosphorus | |
| 349. |
The chemical which is used in art and craft and can cause anemia and leukemia is : |
| A. | Benzene |
| B. | Dioxine |
| C. | Phthalate |
| D. | Aldrin |
| Answer» B. Dioxine | |
| 350. |
Which of the following diseases is caused by the consumption of nitrate contaminated food and water ? |
| A. | Minimata disease |
| B. | Osteoporosis |
| C. | Blue baby syndrome |
| D. | Asbestosis |
| Answer» D. Asbestosis | |