McqMate
These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: General Knowledge (GK) .
| 1401. |
Cod liver oil from fish is rich in which vitamin? |
| A. | Vitamin A |
| B. | Vitamin D |
| C. | Vitamin C |
| D. | Vitamin B |
| Answer» B. Vitamin D | |
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Explanation: Cod liver oil, as the name suggests, is the essential oil extracted from the livers of Atlantic cod (Gadus morhua). It is a nutrient-dense source of essential vitamins including vitamin D and vitamin A as well as anti-inflammatory omega-3 fatty acids. It one of the few and best vitamin D-rich foods. |
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| 1402. |
Organisms using simple food material acquired from inorganic sources in the form of carbon dioxide and water are called – |
| A. | Autotrophs |
| B. | Heterotrophs |
| C. | Organotroph |
| D. | Both (1) and (3) |
| Answer» A. Autotrophs | |
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Explanation: Autotroph means self-feeding in Greek or producer and is an organism that produces complex organic compounds such as carbohydrates, fats, and proteins from simple substances using energy from light. |
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| 1403. |
Harvesting season of Kharif crop in India is . |
| A. | January, March |
| B. | Febrtilary, April |
| C. | September, October |
| D. | November, January |
| Answer» C. September, October | |
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Explanation: Kharif crops or monsoon crops are domesticated plants cultivated and harvested during the rainy (monsoon) season in the South Asia, which lasts between April and October. Kharif crops are usually sown with the beginning of the first rains in July, during the south-west monsoon season and harvested in September-October. Main kharif crops are millet and rice. |
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| 1404. |
The deciduous trees will – |
| A. | shed their leaves every year |
| B. | not lose their leaves |
| C. | synthesise their own food |
| D. | depend on others for their food |
| Answer» A. shed their leaves every year | |
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Explanation: Deciduous means "falling Off at maturity" or "tending to fall off. Deciduous trees or shrubs lose their leaves seasonally. The converse of deciduous is evergreen. |
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| 1405. |
The suicidal bags of the cell are – |
| A. | Lysosomes |
| B. | Ribosomes |
| C. | Dictyosomes |
| D. | Phagosomes |
| Answer» A. Lysosomes | |
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Explanation: Lysosomes are called the suicide bags of the cells they contain digestive enzymes, and break down food, cellular debris and foreign invaders like bacteria. When the cell is injured beyond repair, or becomes old, the lysosome digests the cell. So, it is called "suicide bag of the cell." |
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| 1406. |
Which of the following is responsible for transport of food and other substances in plants? |
| A. | Xylem |
| B. | Phloem |
| C. | Chloroplast |
| D. | None these |
| Answer» B. Phloem | |
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Explanation: The transport of water, nutrients and other substances from one part of a plant to another is called translocation. While, phloem transports synthesized food from the leaves to the rest of the plant body; water and minerals are transported from the roots upwards through the xylem tubes. |
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| 1407. |
Which lobe of human brain is associated with hearing? |
| A. | Frontal lobe |
| B. | Parietal lobe |
| C. | Temporal lobe |
| D. | Occipital lobe |
| Answer» C. Temporal lobe | |
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Explanation: The Temporal Lobes, located on each side of the head above the ears, control hearing and are related to smell, taste and short- term memory (especially visual and verbal). It is involved in processing sensory input into dprived meanings for the appropriate retention of visual memory, language comprehension, and emotion association. |
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| 1408. |
"Slipper animalcule" is the common name for: |
| A. | Paramecium |
| B. | Tiypanosoma |
| C. | Monocystis |
| D. | Plasmodium |
| Answer» A. Paramecium | |
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Explanation: "Animalcule" is a old term for a microorganism; it just means "small animal". A paramecium is shaped somewhat like a slipper (a soft shoe), so it is called the slipper animalcule. Other better-known animalcules include: Amoeba, called Proteus animalcule; Noctiluca scintillans, commonly called the 'SeaSparkles'; Rotifers, called wheel animalcules, etc. |
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| 1409. |
The thymus gland produces a hormone called – |
| A. | thyroxine |
| B. | thymosin |
| C. | thyronine |
| D. | calcitonin |
| Answer» B. thymosin | |
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Explanation: The thymus is a specialized primary lymphoid organ of the immune system. Thymosin hormones are typically produced by the thymus gland and trigger the creation of T- cells, which are used by the immune system to fight disease. The thymus gland is only active until puberty. |
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| 1410. |
Blood group AB has – |
| A. | No antigen |
| B. | No antibody |
| C. | Neither antigen nor antibody |
| D. | Both antigen and antibody |
| Answer» B. No antibody | |
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Explanation: Blood group AB individuals have both A and B antigens on the surface of their RBCs, and their blood plasma does not contain any antibodies against either A or B antigen. Therefore, an individual with type AB blood can receive blood from any group (with AB being preferable), but cannot donate blood to any group other than AB. They are known as universal recipients. |
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| 1411. |
What does the word 'amphibian' means? |
| A. | Three lives |
| B. | Four lives |
| C. | Two lives |
| D. | One lives |
| Answer» C. Two lives | |
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Explanation: The word amphibian means two- lives. Amphibians spend their lives in the water and on land. All amphibians begin their life in water with gills and tails; as they grow, they develop lungs and legs for their life on land. Members of this animal class are frogs, toads, etc. |
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| 1412. |
The best milch breed in the word is – |
| A. | Chittagong |
| B. | Sindhi |
| C. | Deoni |
| D. | Holstein-Friesian |
| Answer» D. Holstein-Friesian | |
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Explanation: Holstein Friesians are a breed of cattle known today as the world's highest- production dairy animals. The cattle is characterized by good durability, high productivity and high fat and protein levels in milk, making it a cost-effective and highly profitable livestock on farms around the world. |
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| 1413. |
Pulses are obtained from the family – |
| A. | Liliaceae |
| B. | Leguminosae |
| C. | Cycadaceae |
| D. | Fungi |
| Answer» B. Leguminosae | |
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Explanation: Pulse, in botany, is a common name for members of the Fabaceae (Leguminosae), a large plant family. Pulses, high in protein, are used as food for humans and other animals. Besides, they play a key role in crop rotation due to their ability to fix nitrogen. |
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| 1414. |
Laws of heredity was put forward by – |
| A. | Mendel |
| B. | Mendeleev |
| C. | Pavlov |
| D. | Koch |
| Answer» A. Mendel | |
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Explanation: The laws of heredity were discovered by Gregor Mendel in about 1856- 1863. Mendel conducted experiments in plant hybridization, collecting the results of cross- fertilizing hundreds of edible pea plants. The results from Menders experiments confirmed his ideas about heredity: the law of segregation, which has become known as Mendel's First Law, and the law of independent assortment, also known as Mendel's Second Law. |
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| 1415. |
Insulin - |
| A. | increases blood sugar |
| B. | decreases blood sugar |
| C. | constricts blood vessels |
| D. | stimulates lactation |
| Answer» B. decreases blood sugar | |
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Explanation: Insulin is central to regulating carbohydrate and fat metabolism in the body. It stops the use of fat as an energy source by inhibiting the release of glucagon. It removes excess glucose from the blood, which otherwise would be toxic. |
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| 1416. |
When we touch leaves of 'Touch me not plant", they close, these movements are called – |
| A. | Photonastic movements |
| B. | nyctinastic movements |
| C. | seismonastic movements |
| D. | chemonastric movements |
| Answer» C. seismonastic movements | |
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Explanation: These types of movements have been termed seismonastic movements. The movement occurs when specific regions of cells lose turgor pressure, which is the force that isapplied onto the cell wall by water within the cell vacuoles and other cell contents. |
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| 1417. |
The concept of tissue culture was introduced by – |
| A. | Halfmeister |
| B. | Hanstein |
| C. | Haberlandt |
| D. | Harming |
| Answer» C. Haberlandt | |
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Explanation: Wilhelm Roux is credited with the establishment of the basic principle of tissue culture in 1885. However, it was Gottlieb Haberlandt, an Austrian botanist, who first pointed out the possibilities of the culture of isolated tissues, plant tissue culture. |
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| 1418. |
What accumulates in the muscles after continuous strenuous physical exercise as a result of temporary anaerobic respiration that causes muscular fatigue? |
| A. | ATP |
| B. | Lactic acid |
| C. | Ethyl alcohol |
| D. | Carbon dioxide |
| Answer» B. Lactic acid | |
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Explanation: Anaerobic reactions break down glucose into pyruvic acid, which then reacts to produce lactic acid. As muscle metabolism shifts from aerobic to anaerobic ATP production, lactic acid begins to accumulate in muscles and to appear in the bloodstream. This leads to muscle fatigue. |
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| 1419. |
Thalassemia is an example of – |
| A. | Deletion mutation |
| B. | Point mutation |
| C. | Silent mutation |
| D. | Frame shift mutation |
| Answer» D. Frame shift mutation | |
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Explanation: Frame shift mutations are associated with Thalassemia. They involve a deletion or insertion of one' or two base pairs |
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| 1420. |
The plant from which cocoa and chocolate are obtained is a - |
| A. | herb |
| B. | shrub |
| C. | small tree |
| D. | very big tree |
| Answer» C. small tree | |
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Explanation: Chocolate production starts with harvesting cocoa in a forest. Cocoa comes from tropical evergreen Cocoa trees, such as Theobroma Cocoa which are small trees. These trees live in the understory of tropical forests and require other, taller trees to shelter them from wind and sun |
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| 1421. |
The biggest single-celled organism is – |
| A. | Yeast |
| B. | Acetabularia |
| C. | Acetobacter |
| D. | Amoeba |
| Answer» D. Amoeba | |
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Explanation: Researchers, in October 2011, found "giant amoebas" (Xenophyophores) beneath the surface of the Pacific in the Mariana Trench. At more than four inches in length, they are the largest single-celled organism on Earth. They are found exclusively in the deep sea. |
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| 1422. |
Which one of the following is not a rabi crop? |
| A. | Mustard |
| B. | Rice |
| C. | Wheat |
| D. | Gram |
| Answer» B. Rice | |
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Explanation: Rabi refers to agricultural crops sown in winter and harvested in the spring. Examples of Rabi Crops: Wheat, Gram, Pea, Mustard, Linseed, Barley. Rice is a Kharif crop,cultivated and harvested during the rainy (monsoon) season in the South Asia. |
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| 1423. |
Resin is a product of – |
| A. | Grapes |
| B. | Coniferous trees |
| C. | Rubber tree |
| D. | Banyan tree |
| Answer» B. Coniferous trees | |
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Explanation: Resin in the most specific use of the term is a hydrocarbon secretion of many plants, particularly coniferous trees. It is distinct from other liquid cam-pounds found inside plants or exuded by plants, such as sap, latex, or mucilage. |
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| 1424. |
Which angiosperm is vessel-less? |
| A. | Hydrilla |
| B. | Trochodendron |
| C. | Maize |
| D. | Wheat |
| Answer» A. Hydrilla | |
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Explanation: Trochodendron is a genus of flowering plants with one living species. It is vesselless angiosperm. Fewer than 200 species of angiosperms have the primitive feature of vesselless wood. With two exceptions— Trochodendron and Tetracentron—, all vesselless angiosperms occur in the Magnoliidae. |
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| 1425. |
Who was the first child born alter operative procedure? |
| A. | Caesar |
| B. | Huxley |
| C. | William |
| D. | Pasteur |
| Answer» A. Caesar | |
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Explanation: Julius Caesar is commonly believed to have been born due to operative procedure from his mother Aurelia. It is from his name that the word 'Caesarean section' is derived. It is a surgical procedure in which oneor more incisions are made through a mother's abdomen and uterus to deliver baby. |
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| 1426. |
The sense of balance is achieved by – |
| A. | Cerebrum equilibrium |
| B. | Thalamus equilibrium |
| C. | Cerebellum equilibrium |
| D. | Spinal chord equilibrium |
| Answer» C. Cerebellum equilibrium | |
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Explanation: The cerebellum equilibrium controls the aspects of balance, equilibrium, and muscle tone, which are factors that provide for smooth movement and activity. Electrical impulses from the cerebellum stimulate muscles that are responsible for voluntary movement, and it works in coordination with the motor cortices of the cerebrum for this overall function. |
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| 1427. |
Christmas factor is involved in – |
| A. | Blood Coagulation |
| B. | Excretion |
| C. | Digestion |
| D. | Respiration |
| Answer» A. Blood Coagulation | |
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Explanation: Factor IX, also known as Christmas factor, is one of the serine proteases of the coagulation system; it belongs to peptidase family Sl. Deficiency of this protein causes hemophilia B. It was discovered in 1952 after a young boy named Stephen Christmas was found to be lacking this exact factor, leading to haemophilia. |
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| 1428. |
Which Vitamins are those, if taken in excess can be dangerous as they are stored in the body? |
| A. | B Complex |
| B. | E and C |
| C. | B and C |
| D. | A and D |
| Answer» D. A and D | |
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Explanation: Vitamins A, D, E, and K are the fat-soluble vitamins. Unlike water-solublevitamins, these vitamins dissolve in fat and are stored in body tissues. Too much vitamin A, D, or K can lead to increased levels that are unhealthy and can cause health consequences. For example, too much vitamin A can lead to birth defects. |
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| 1429. |
Inhibition of photosynthesis in the presence of O2 in C3 plants is called- |
| A. | Hexose monophosphate shunt |
| B. | Pasteur effect |
| C. | Decker effect |
| D. | Warburg effect |
| Answer» D. Warburg effect | |
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Explanation: An increase in the oxygen concentration in many plants results in a decrease in the rate of photosynthesis. This phenomenon of the inhibition of photosynthesis by O2 was first discovered by a German biochemist Warburg in 1920 in Chorella (a green alga) and is called Warburg effect. O2 causes greatest inhibition of photosynthesis when CO2 levels are low and light levels are saturating. This effect is known to occur in C3 plants (Soyabean) and C4 plants (Sorghum, Maize, Sugarcane), etc. |
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| 1430. |
In mammals, an important role of excretion is played by – |
| A. | Large intestine |
| B. | Kidneys |
| C. | Lungs |
| D. | Liver |
| Answer» B. Kidneys | |
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Explanation: The kidneys are bean-shaped organs that serve several excretory roles apart from the essential regulatory roles in mammals. They remove from the blood the nitrogenous wastes such as urea, as well as salts and excess water, and excrete them in the form of urine. In producing urine, the kidneys excrete nitrogenous wastes such as urea and ammonium. |
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| 1431. |
Who among the following is credited with starting the work on plant tissue culture? |
| A. | F.C. Steward |
| B. | P. Maheshwari |
| C. | P.R. White |
| D. | Haberlandt |
| Answer» D. Haberlandt | |
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Explanation: G. Haberlandt, a German botanist, in 1902 cultured fully differentiated plant cells isolated from different plants. This was the very first step for the beginning of plant cell and tissue culture. Further contributions were made by the Cell Doctrine which admitted that a cell is capable of showing totipotency. |
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| 1432. |
Spraying of DDT on crops causes pollution of . |
| A. | Air & Soil |
| B. | Crops & Air |
| C. | Soil & Water |
| D. | Air & Water |
| Answer» C. Soil & Water | |
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Explanation: DDT is a persistent organic pollutant that is readily adsorbed to soils and sediments, which can act both as sinks and as long-term sources of exposure affecting organisms. Besides, spraying pesticides like DDT on plants pollutes the ground water system which contaminates the entire food chain by severely affecting humans dependent on these. |
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| 1433. |
Which cells in pancreas produce Insulin? |
| A. | Thymus |
| B. | Estrogen |
| C. | Corpus epididymis |
| D. | Islets of Langerhans |
| Answer» D. Islets of Langerhans | |
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Explanation: The islets of Langerhans are the regions of the pancreas that contain cells that produce hormones. There are five types of cells in the islets of Langer-hans: beta cells secrete insulin; alpha cells secrete glucagon: PP cells secrete pancreatic polypeptide; delta cells secrete somatostatin; and epsilon cells secrete ghrelin. |
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| 1434. |
Yeast is a . |
| A. | Bacteria |
| B. | Fungi |
| C. | Algae |
| D. | Bryophyte |
| Answer» B. Fungi | |
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Explanation: Yeast are eukaryotic, single- celled microorganisms classified as members of the fungus kingdom. They are estimated to constitute 1% of all described fungal species. Yeasts, such as Candida albicans, are opportunistic pathogens and can cause infections in humans. |
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| 1435. |
Which of the following is not connective tissue? |
| A. | Bone |
| B. | Cartilage |
| C. | Blood |
| D. | Skeletal muscle |
| Answer» D. Skeletal muscle | |
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Explanation: Skeletal muscle is a form of striated muscle tissue which is under the voluntary control of the somatic nervous system. Most skeletal muscles are attached to bones by bundles of collagen fibers known as tendons. It is one of three major muscle types, the others being cardiac muscle and smooth muscle. |
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| 1436. |
The hormone that stimulates heart beat is – |
| A. | Thyroxine |
| B. | Gastrin |
| C. | Glycogen |
| D. | Dopamine |
| Answer» A. Thyroxine | |
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Explanation: Thyroxine is the main hormone secreted into the bloodstream by the thyroid gland. It plays vital roles in digestion, heart and muscle function, brain development and maintenance of bones. It increases heart rate, cardiac contractility and cardiac output and alsopromotes vasodilation, which leads to enhanced blood flow to many organs. |
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| 1437. |
Which of the following gas leaked in the Bhopal Gas tragedy in December 1984? |
| A. | Methyl isocyanate |
| B. | Methyl isochlorate |
| C. | Methyl phosphate |
| D. | Methyl isopropate |
| Answer» A. Methyl isocyanate | |
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Explanation: In the gas tragedy that occurred at the Union Carbide India Limited pesticide plant in Bhopal, Madhya Pradesh, on 2-3 December 1984, over 500,000 people were exposed to toxic methyl isocyanate (MIC) gas and other chemicals. An estimated 10,000 or more people died. |
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| 1438. |
The disease Beni Beni is caused due to the deficiency of which of the following? |
| A. | Vitamin B2 |
| B. | Vitamin B1 |
| C. | Vitamin B12 |
| D. | Vitamin E |
| Answer» B. Vitamin B1 | |
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Explanation: Beriberi is a disease caused by a vitamin B1 (thiamine) deficiency. There are two types of the disease: wet beriberi and dry beriberi. Wet beriberi affects the heart and circulatory system. In extreme cases, wet beriberi can cause heart failure. Dry beri-beri damages the nerves and can lead to a loss of muscle strength and eventually, muscle paralysis. |
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| 1439. |
Excessive secretion from the pituitary gland in children results in – |
| A. | increased height |
| B. | retarded growth |
| C. | weakening of bones |
| D. | None of the above |
| Answer» A. increased height | |
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Explanation: 0 |
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| 1440. |
Which one of the following is known as the ‘immovable property’ in the cell? |
| A. | Carbohydrate |
| B. | Fat |
| C. | Protein |
| D. | Nucleic acid |
| Answer» D. Nucleic acid | |
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Explanation: Immovable property is an immovable object, an item of property that cannot be moved without destroying or altering it – property that is fixed to the earth, such as land or a house. |
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| 1441. |
Ozone protects biosphere from – |
| A. | X-rays |
| B. | Gamma rays |
| C. | Ultraviolet rays |
| D. | Infrared rays |
| Answer» C. Ultraviolet rays | |
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Explanation: Ozone is an allotrope of oxygen that is formed from dioxygen by the action of ultraviolet light and also atmospheric electrical discharges. The ozone layer in the stratosphere acts as a filter for the shorter wavelength and highly hazardous ultraviolet radiation (UVR) from the sun, protecting life on Earth from its potentially harmful effects. |
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| 1442. |
Omithophily is effected by – |
| A. | snails |
| B. | bats |
| C. | insects |
| D. | birds |
| Answer» D. birds | |
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Explanation: Omithophily or bird pollination is the pollination of flowering plants by birds. This coevolutionary association is derived from insect pollination (ento-mophily) and is particularly well developed in some parts of the world, especially in the tropics and on some island chains. |
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| 1443. |
The xylem in plants are responsible for |
| A. | transport of water |
| B. | transport of food |
| C. | transport of amino acids |
| D. | transport of oxygen |
| Answer» A. transport of water | |
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Explanation: Xylem is one of the two types of transport tissue in vascular plants, phloem being the other. The basic function of xylem is to transport water from roots to shoot and leaves, but it also transports some dissolved nutrients. Together with phloem (tissue that conducts sugars from the leaves to the rest of the plant), xylem is found in all vascular plants. |
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| 1444. |
Which of the following bacterium causes crown gall disease in plants? |
| A. | Bacillus thurigiensis |
| B. | Agrobacterium tumefaciens |
| C. | Pseudomonas fluorescens |
| D. | None of these |
| Answer» B. Agrobacterium tumefaciens | |
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Explanation: Crown gall is a disease caused by the bacterium Agrobacterium tumefaciens (synonym Rhizobium radiobacter), which enters the plant through wounds in roots or stems and stimulates the plant tissues to grow in a disorganized way, producing swollen galls. As the disease progresses, plants lose vigour and may eventually die. |
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| 1445. |
Blood is red in colour due to the presence of - |
| A. | Cytochrome |
| B. | Chlorophyll |
| C. | Hemocyanin |
| D. | Haemoglobin |
| Answer» D. Haemoglobin | |
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Explanation: The red color of blood comes from the hemoglobin that makes up the majority of the mass of the cell, which allows the blood cell to carry oxygen around the body. Theplasma itself is a straw color when viewed under a microscope, but the hemoglobin makes up so much of the blood cell that its red color overpowers the color of the plasma. |
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| 1446. |
Which one of the following events in a botanical garden is never directly influenced by light? |
| A. | Flowering |
| B. | Photosynthesis |
| C. | Transpiration |
| D. | Fertilization |
| Answer» D. Fertilization | |
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Explanation: Fertilization in plants is not directly influenced by sunlight. It occurs when pollen grains are transported from anthers to stigma. When ripe pollen from an anther catches on the stigma of the same kind of flower, each pollen grain sends out a small thread-like tube. Fertilization occurs after pollination, when pollen grains land on the stigma of a flower of the same species. During this time, a series of events take place leading to the formation of seeds. |
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| 1447. |
Which mosquito is the carrier of Zika virus? |
| A. | Culex |
| B. | Aedes |
| C. | Anopheles |
| D. | Culiseta |
| Answer» B. Aedes | |
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Explanation: Zika virus (ZIKV) is a member of the virus family Flaviviridae is spread by daytime-active Aedes mosquitoes, such as A. aegypti and A. albopictus. Its name comes from the Zika Forest of Uganda, where the virus was first isolated in 1947. Zika virus is related to the dengue, yellow fever, Japanese encephalitis, and West Nile viruses. |
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| 1448. |
Root cap is derived from – |
| A. | Derm atogen |
| B. | Calyptrogen |
| C. | Protoderm |
| D. | Histogen |
| Answer» B. Calyptrogen | |
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Explanation: Calyptrogen is a layer of rapidly dividing cells at the tip of a plant root, from which the root cap is formed. It occurs in grasses and many other plants. The root cap is formed by several layers of cells that envelop the root tip externally. This covering of cells, of which the outermost ones are dead, envelops and protects the growing tip very much as a thimble protects the finger. |
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| 1449. |
percent of Delhites are suffering from Asthma and Rhinitis. |
| A. | 13% |
| B. | 10% |
| C. | 11% |
| D. | 12% |
| Answer» C. 11% | |
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Explanation: As per a recent survey conducted by Vallabhbhai Patel Chest Institute Delhi, more than an 11% of Delhiites are suffering from asthma and rhinitis. As per the survey, 11.69% were found to be suffering from rhinitis and 11.03% from asthma. |
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| 1450. |
A group of genes whose activity is coordinated by a DNA site is – |
| A. | operon |
| B. | cistron |
| C. | polysome |
| D. | polypeptide |
| Answer» A. operon | |
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Explanation: The operon is defined as a group of genes whose activity is coordinated by a DNA site. An operon is a functioning unit of genomic DNA containing a cluster of genes under the control of a single promoter. The genes are transcribed together into an mRNA strand and either translated together in the cytoplasm, or undergo trans-splicing to create monocistronic mR-NAs that are translated separately. |
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