Untitled spreadsheet - Sheet5 Flashcards
Question Number,Question,Year,Options
Question,Option,Note
1,Most of the desert plants bloom during night time because,1995,”(a) their blooming is controlled by low temperature, (b) they are sensitive to the phases of moon, (c) the desert insects eat away flowers during day time, (d) the desert insects are active during night time”
1,d,”Plant and animal activity happens at night in deserts due to high temperature. The desert insect pollinates flowers in night.”
2,Living organisms require at least 27 elements, of which 15 are metals. Among these, those required in major quantities, include,1996,”(a) potassium, manganese, molybdenum and calcium, (b) potassium, molybdenum, copper and calcium, (c) potassium, sodium, magnesium and calcium, (d) sodium, magnesium, copper and manganese”
2,c,”Living organism require about 27 elements of which 15 are metals. K, Mg, Na and Ca are required in major quantities. Minor quantity of Mn, Fe, Co, Cu, Zn and Mo and trace amount of V, Cr, Sn, Ni and Al are required by some organisms. Calcium, magnesium and phosphorus are essential parts of the bones and teeth. Calcium is necessary for blood clotting. Sodium helps in muscle activity and transmission of nerve.”
3,It is possible to produce seedless tomato fruits by,1996,”(a) applying trace elements in tomato fruits, (b) spraying mineral solution on plants, (c) spraying hormones on flowers, (d) applying fertilizers containing radioactive elements”
3,c,”Hormone auxin is responsible to produce seedless tomato fruits.”
- Match List-I (Physiological processes) with List-II (Cell
organelles) and select the correct answer by using the codes
given below: [1996]
List- I List-II
A. Photosynthesis 1. Plasma membrane
B. Mineral uptake 2. Chloroplast
C. Respiration 3. Mitochondria
D. Protein synthesis 4. Ribosomes
(a) A – 1; B – 2; C – 3; D – 4
(b) A – 1; B – 2; C – 4; D – 3
(c) A – 2; B – 1; C – 3; D – 4
(d) A – 2; B – 1; C – 4; D – 2
4,c,”Photosynthesis occurs in green plants by the help of chloroplast. Plasma membrane helps in transport of minerals. Cellular respiration is related to mitochondria, by which energy releases. Ribosome helps in protein synthesis.”
5,Which one of the following is a modified stem?,1996,”(a) Carrot, (b) Sweet potato, (c) Coconut, (d) Potato”
5,d,”Potato tuber bears buds in small pits known as eyes. Buds develops to branches. Some of the branches become green, erect and leafy stems that grow horizontally under ground.”
6,Which one of the following type of microorganisms is most widely used in industries?,1998,”(a) Bacteria, (b) Bacteria and fungi, (c) Bacteria and algae, (d) Bacteria, microalgae and fungi”
6,d,”Bacteria, microalgae and fungi is most widely used in industries. Bacteria like Lactobacillus sp. is used in manufacturing of vinegar and alcohol by fermentation process. Most of algae are used as single cell protein (i.e. Spirulina). Different drugs like penicillin is manufactured from fungi Penicillium notatum.”
- Match List-I with List-II and select the correct answer by
using the codes given below the lists [1998]
List-I List-II
A. Fruit 1. Ovule
B. Seed 2. Leaf
C. Wood 3. Stem
D. Starch 4. Ovary
(a) A-2; B-1; C-3; D- 4 (b) A-4; B-1; C-3; D-2
(c) A-2; B-3; C-1; D-4 (d) A-4; B-3; C-1; D-2
7,b,”After the pollination of ovary, fruit develops gradually from it. Stem of tree develops to wood. Seed develops from fertilized ovule. Leaf produces starch at the time of photosynthesis.”
8,Which one of the following statements regarding starch and cellulose is not correct?,1998,”(a) Both of them are of plant origin, (b) Both of them are polymers, (c) Both of them give color with iodine, (d) Both of them are made up of glucose molecules”
8,c,”Starch and cellulose both are plant origin. Starch deposits in plant cells, whereas cellulose is most important constituent of plant cell wall. Both starch and cellulose are polymers. Starch is branched polymer of a – D – glucose unit linked by a – 1, 4 glycosidic bond. Cellulose is a linear polymer of b – D – glucose unit. Glucose molecules are present in both starch and cellulose. Amylose in starch is responsible for the formation of deep blue colour in the presence of iodine but cellulose does not give any colour at the treatment with iodine, because amylose is absent in cellulose.”
9,Ergotism is due to consumption of,1998,”(a) contaminated grains, (b) rotting vegetables, (c) contaminated water, (d) safe cooked food”
9,a,”Ergotism is the effect of long term ergot poisoning, due to ingestion of alkaloids produced by fungus Claviceps purpurea which is found in infected cereals and ryes.”
10,Which one of the following is a useful functional association between fungi and the roots of higher plants?,1999,”(a) Biofertilizer, (b) Coralloid root, (c) Lichen, (d) Mycorrhiza”
10,d,”Mycorrhiza is a symbiotic association between a fungus and the roots of a vascular plant. Mycorrhiza takes carbohydrate from the plants. In return, the fungus helps the plant by supplying water and the important minerals.”
11,Which one of the following organisms can serve as a biofertilizer for rice crop?,2000,”(a) Blue-green algae, (b) Rhizobium sp., (c) Mycorrhizal fungi, (d) Azotobacter sp.”
11,a,”Blue green algae is used as a biofertilizer in rice crop. Blue green algae has the nitrogen fixing ability which enhances the production of rice.”
12,Phytotron is a facility to,2000,”(a) grow plants under disease-free conditions, (b) conserve endangered species of plants, (c) grow plants under controlled conditions, (d) induce mutations”
12,c,”Phytotron is a type of chamber, designed to provide a controlled environment for the study of plant growth.”
13,Soft drinks such as colas contain significant quantities of,2000,”(a) caffeine, (b) nicotine, (c) tannin, (d) renin”
13,a,”Cocoa contains caffeine, carbonated water, glucose-fructose, kola extract and caramel colour.”
14,Canola refers to special type of oilseed mustard varieties bred for human consumption. The main characteristic of these varieties is that the,2000,”(a) seeds have very high oil content, (b) oil is rich in unsaturated fatty acids, (c) oil has long shelf-life, (d) oil has very low erucic acid content”
14,d,”Canola oil is the lowest in saturated fat, it is high in certain omega 3 fatty acid and mono saturated fats, which are found in nuts and are healthy for the heart.”
15,Which organelle in the cell, other than nucleus contains DNA?,2001,”(a) Centriole, (b) Golgi apparatus, (c) Lysosome, (d) Mitochondrion”
15,d,”DNA is also found in mitochondria other than nucleus. The DNA is called mitochondrial DNA.”
16,”“Athlete’s Foot” is a disease caused by”,2001,”(a) Bacteria, (b) Fungus, (c) Protozoan, (d) Nematode”
16,b,”Athlete’s Foot disease is caused by parasitic fungus of genus Trichophyton. Scaling, flaking and itching of affected areas are the symptoms of this disease. This disease transmitted in moist areas where people walk bare foot.”
17,Epiphytes are plants which depend on other plants for,2001,”(a) food, (b) mechanical support, (c) shade, (d) water”
17,b,”An epiphyte is a plant normally grows on another plant for support. It is non parasitic, but uses the host plant for support. A plant such as tropical orchid or staghorn fern, that grows on another plant upon which it depends for mechanical support but not for nutrients.”
18,In a bisexual flower, if androecium and gynoecium mature at different times, the phenomenon is known as,2002,”(a) dichogamy, (b) herkogamy, (c) heterogamy, (d) monogamy”
18,a,”In bisexual flower, the male and female flowers (androecium and gynoecium) mature at different times to avoid self-fertilization. It is called dichogamy.”
- Consider the following plants [2002]
- Bougainvillea 2. Carnations
- Cocoa 4. Grapes
Which of these plants are propagated by stem cuttings?
(a) 1 and 2 (b) 2, 3 and 4
(c) 1, 3 and 4 (d) 1, 2, 3 and
19,c,”Bougainvillea, cocoa and grapes plants are propagated by stem cutting process.”
20,”Consider the following statements: [2003] 1. The common blue-green algae, Spirogyra and Ulothrix, are found in both fresh water ponds and oceans. 2. The Chameleon can look ahead with one eye, and at the same time look behind with another. Which of these statements is/are correct?”,2003,”(a) Only 1 (b) Only 2 (c) Both 1 and 2 (d) Neither 1 nor 2”
20,b,”Spirogyra and Ulothrix are green algae not blue green algae. The chameleon can see in both the direction forward and backward at the same time.”
21,”Assertion (A) : Unsaturated fats are more reactive compared with the saturated fats. Reason (R) : Unsaturated fats have only single bonds in their structure. [2003]”,2003,”(a) Both A and R are individually true and R is the correct explanation of A (b) Both A and R are individually true but R is not the correct explanation of A (c) A is true but R is false (d) A is false but R is true”
21,c,”Assertion is true because unsaturated fats are more reactive compared with saturated fats due to multiple bonds present between carbon atoms. The reason is false because unsaturated fats have at least double bond in their structure.”
22,”Consider the following statements: [2003] 1. Molasses is a by-product of sugar production process. 2. Bagasse obtained in the sugar mills is used as a fuel in the boilers to generate steam for the sugar factories. 3. Sugar can only be produced from sugarcane as the raw material. Which of these statements are correct?”,2003,”(a) 1 and 2 (b) 2 and 3 (c) 1 and 3 (d) 1, 2 and 3”
22,a,”Molasses is by-product of sugar production process and bagasse of sugar used as a fuel in boilers for sugar factories. But sugar produced from sugar cane and also from sugar beet.”
23,”Assertion (A): Cellulose is used in making shatter-proof glass. [2006] Reason (R) : Polysaccharides are not soluble in water.”,”(a) Both ‘A’ and ‘R’ are individually true and ‘R’ is the correct explanation of’ A’ . (b) Both ‘A’ and ‘R’ are individually true but ‘R’ is not the correct explanation of’ A’ . (c) ‘A’ is true but ‘R’ is false. (d) ‘A’ is false but ‘R’ is true.”,2006
23,a,”Cellulose is not soluble in water that is why it is used in making shatter-proof glass. Cellulose is a poly saccharide.”
24,”Which one of the following parts of the pitcher plant becomes modified into a pitcher? [2007]”,”(a) Stem (b) Leaf (c) Stipule (d) Petiole”,2007
24,b,”In pitcher plant, the lamina of leaf is modified into pitcher and the leaf apex gives rise to a coloured lid for attracting the insects.”
25,”Which of the following types of light are strongly absorbed by plants? [2007]”,”(a) Violet and orange (b) Blue and red (c) Indigo and yellow (d) Yellow and violet”,2007
25,b,”Photosynthesis occurs between wavelengths of about 400 nm and 750 nm. Red and blue colour wavelength is categories in this wavelength. So, plants absorb these colours. Photosynthesis does not occur in the infra-red or in ultraviolet light.”
26,”Consider the following [2008] 1. Rice fields 2. Coal mining 3. Domestic animals 4. Wetlands Which of the above are sources of methane, a major greenhouse gas?”,2008,”(a) 1 and 4 only (b) 2 and 3 only (c) 1, 2 and 3 only (d) 1, 2, 3 and 4”
26,d,”Rice fields, coal mining, domestic animal and wet lands all are the sources of methane.”
27,”Which one of the following is an insectivorous plant? [2008]”,”(a) Passion flower plant (b) Pitcher plant (c) Night queen (d) Flame of the forest”,2008
27,b,”Pitcher plant is an insectivorous plant. It feeds on living creatures including insects and small mammals. These plant attracts the prey with a smell of rotting meat. The victim is dissolved by plant enzymes.”
28,”Consider the following statements about probiotic food: [2008] 1. Probiotic food contains live bacteria which are considered beneficial to humans. 2. Probiotic food helps in maintaining gut flora. Which of the statements given above is/are correct?”,”(a) 1 only (b) 2 only (c) Both 1 and 2 (d) Neither 1 nor 2”,2008
28,c,”Probiotics are the living microorganisms that are healthy for host organism. Lactic acid bacteria, Bifido bacteria are common type of microbes used as probiotics. Certain yeast and Bacilli may also useful. Probiotics are commonly consumed as a part of fermented food with specially added active live cultures such as yoghurt or as dietary supplements.”
29,”Consider the following statements: [2009] 1. Sweet orange plant is propagated by grafting technique. 2. Jasmine plant is propagated by layering technique. Which of the statements given above is/are correct?”,”(a) 1 only (b) 2 only (c) Both 1 and 2 (d) Neither 1 nor 2”,2009
29,c,”Grafting is a most common method of vegetative propagation. In this method, parts of two plants are joined in such a way that they grow as a one plant. Sweet orange plant is propagated by grafting technique. Layering is another type of vegetative propagation. In this method, roots are artificially induced on the stem branches before they are detached from the plant for propagation. Jasmine plant is propagated by this technique.”
30,”In making the saffron spice, which one of the following parts of the plant is used? [2009]”,”(a) Leaf (b) Petal (c) Sepal (d) Stigma”,2009
30,d,”Saffron is a spice obtained from the stigma of the flower of Crocus sativus Linnaeus.”
31,”Given below are the names of four energy crops. Which one of them can be cultivated for ethanol ? [2010]”,”(a) Jatropha (b) Maize (c) Pongamia (d) Sunflower”,2010
31,b,”Ethanol is produced in India from maize, sugarcane, starch, corn grain etc. Maize is easily available and maize is not costly for product as to economic concern.”
32,”Some species of plants are insectivorous. Why? [2010]”,”(a) Their growth in shady and dark places does not allow them to undertake sufficient photosynthesis and thus they depend on insects for nutrition. (b) They are adapted to grow in nitrogen deficient soils and thus depend on insects for sufficient nitrogenous nutrition. (c) They cannot synthesize certain vitamins themselves and depend on the insects digested by them. (d) They have remained in that particular stage of evolution as living fossils, a link between autotrophs and heterotrophs.”,2010
32,b,”Insectivorous plants prey insects because most of the insectivorous plants grow in those area where there is deficit of nitrogen in nutrients so they catch insect to fulfill its need of nutrients.”
33,”Mon 863 is a variety of maize. It was in the news for the following reason. [2010]”,”(a) It is genetically modified dwarf variety which is resistant to drought (b) It is a genetically modified variety which is pest resistant (c) It is a genetically modified variety with ten times higher protein content than regular maize crop (d) It is a genetically modified variety used exclusively for bio-fuel production”,2010
33,b,”Mon 863 is genetically modified variety of maize, which is resistant of corn root worm.”
34,”Though coffee and tea both are cultivated on hill slopes, there is some difference between them regarding their cultivation. In this context, consider the following statements: [2010] 1. Coffee plant requires a hot and humid climate of tropical areas whereas tea can be cultivated in both tropical and subtropical areas. 2. Coffee is propagated by seeds but tea is propagated by stem cuttings only. Which of the statements given above is /are correct ?”,2010,”(a) 1 only (b) 2 only (c) 1 and 2 (d) Neither 1 nor 2”
34,a,”Both tea and coffee is propagated by seeds and stem cutting, so the (2) option is wrong.”
35,”With reference to soil conservation, consider the following practices : [2010] 1. Crop rotation 2. Sand fences 3. Terracing 4. Wind breaks Which of the above are considered appropriate methods for soil conservation in India.”,”(a) 1, 2, and 3 only (b) 2 and 4 only (c) 1, 3 and 4 only (d) 1, 2, 3 and 4”,2010
35,d,”Crop rotation, Sand fences, terracing and wind breaks all are used for sand conservation in India. Sand fences is a simple and cheap method of inducing accretion of sands in arid and sandy areas.”
36,”Other than Jatropha curcas, why is Pongamia pinnata also considered a good option for the production of biodiesel in India? [2010] 1. Pongamia pinnata grows naturally in most of the arid regions of India. 2. The seeds of Pongamia pinnata are rich in lipid content of which nearly half is oleic acid. Which of the statements given above is/ are correct?”,”(a) 1 only (b) 2 only (c) Both
36,c,”Pongamia Pinnata is adaptable to arid zones, and has a varied habitat distribution and able to grow in a variety of soils, it is native to humid and subtropical environment and grows naturally along coasts and river banks of India and Myanmar. It is nitrogen-fixing trees.”
37,”When the bark of a tree is removed in a circular fashion all around near its base, it gradually dries up and dies because? [2011 - I]”,”2011”,”(a) Water from soil cannot rise to aerial parts. (b) Roots are starved of energy. (c) Tree is infected by soil microbes. (d) Roots do not receive oxygen for respiration.”
37,b,”Phloem layer of tissue just below the bark is responsible for carrying food from leave to roots.”
38,”Consider the following kinds of organisms : [2012 - I] 1. Bacteria 2. Fungi 3. Flowering plants Some species of which of the above kinds of organisms are employed as biopesticides?”,”2012”,”(a) 1 only (b) 2 and 3 only (c) 1 and 3 only (d) 1, 2 and 3”
38,d,”All of them are employed as Biopesticides.”
39,”Consider the following organisms: [2013 - I] 1. Agaricus 2. Nostoc 3. Spirogyra Which of the above is/are used as biofertilizer / biofertilizers?”,”2013”,”(a) 1 and 2 (b) 2 only (c) 2 and 3 (d) 3 only”
39,b,”Nostoc fix atmospheric nitrogen and are used as inoculations for paddy crop.”
40,”Fruits stored in a cold chamber exhibit longer storage life because [2013 - I]”,”2013”,”(a) exposure to sunlight is prevented (b) concentration of carbon dioxide in the environment is increased (c) rate of respiration is decreased (d) there is an increase in humidity”
40,c,”Fruits respire. They give out ethylene which helps in ripening. When fruits are kept in cold storage the rate of ethylene production can be controlled and shelf life of fruits can be increased.”
41,”Many transplanted seedling do not grow because [2013 - I]”,”2013”,”(a) the new soil does not contain favourable minerals (b) most of the root hair grip the new soil too hard (c) most of the root hairs are lost during transplantation (d) leaves get damaged during transplantation”
41,c,”During a transplant the fine roots are destroyed due to the jostling during the uprooting process. These root hairs come under a shock. The plant which has been transplanted either takes time to readjust to the new soil or dries up and dies due to the root hair loss.”
42,”Which of the following leaf modifications occurs/occur in desert areas to inhibit water loss? [2013 - I] 1. Hard and waxy leaves 2. Tiny leaves or no leaves 3. Thorns instead of leaves Select the correct answer using the codes given below.”,”2013”,”(a) 1 and 2 only (b) 2 only (c) 1 and 3 only (d) 1, 2 and 3”
42,d,”To inhibit water loss or to conserve water most of the desert species have waxy leaves that keep them water proof when stomata are closed. Water is further conserved by reducing surface area so most succulents have few leaves or no leaves. Some desert plants have thorns instead of leaves. Thorns do not let the water go out.”
43,”Which one of the following is the process involved in photosynthesis? [2014 - I]”,”2014”,”(a) Potential energy is released to form free energy (b) Free energy is converted into potential energy and stored (c) Food is oxidized to release carbon dioxide and water (d) Oxygen is taken, and carbon dioxide and water vapour are given out”
43,b,”In photosynthesis the free energy is converted into potential energy and stored.”
44,”Which one the following group of a plant domesticated in the new world and introduced into the old world? [2019 - I]”,”2019”,”(a) Tobacco, cocoas, and rubber (b) Tobacco, cotton and rubbers (c) Cotton, coffee and sugarcane (d) Rubber, coffee and wheat”
44,a,”Encyclopedia Britannica: In the 15th and 16th centuries, during the Columbian Exchange: numerous plants, animals, and microbes from old world (Europe, Asia, and Africa) were introduced to the new world (Americas) and vice versa. From the image given in the link, it’s evident that Cocoa and Tobacco were introduced from new world to old world so only A fits.”
45,”Recently, there was a growing awareness in our country about the importance of Himalayan nettle (Girardinia diversifolia) because it is found to be a sustainable source of [2019 - I]”,”2019”,”(a) anti-malarial drug (b) biodiesel (c) pulp for paper industry (d) textile fibre”
45,d,”There is a community in Khar, a hamlet in Darchula district in far-western Nepal, which produces fabrics from Himalayan nettle. The fabric and the things made from it are sold in local as well as national and international markets as high-end products so D: textile is most suitable.”
46,”Which of the following statements are correct regarding the general difference between plant and animal cells ? [2020-I] 1. Plant cells have cellulose cell walls whilst animal cells do not. 2. Plant cells do not have plasma membrane unlike animal cells which do. 3. Mature plant cell has one large vacuole whilst an animal cell has many small vacuoles. Select the correct answer using the code given below :”,”2020”,”(a) 1 and 2 only (b) 2 and 3 only (c) 1 and 3 only (d) 1, 2 and 3”
46,c,”NCERT Class10 Science: page 61- Plant cells, in addition to the plasma membrane, have another rigid outer covering called the cell wall. So, statement#2 is incorrect, so by elimination answer is c.”
47,”According to India’s National Policy on Biofuels, which of the following can be used as raw materials for the production of biofuels? [2020-I] 1. Cassava 2. Damaged wheat grains 3. Groundnut seeds 4. Horse gram 5. Rotten potatoes 6. Sugar beet Select the correct answer using the code given below:”,”2020”,”(a) 1,2,5 and 6 only (b) 1,3,4 and 6 only (c) 2,3,4 and 5 only (d) 1,2,3,4,5 and 6”
47,a,”National Policy on Biofuels 2018 identified following raw materials for biofuel generation: Molasses, Sugarcane juice, biomass in form of grasses, agriculture residues (Rice straw, cotton stalk, corn cobs, saw dust, bagasse etc.), sugar containing materials like sugar beet, sweet sorghum, etc., starch containing materials such as corn, cassava, rotten potatoes etc., Damaged food grains like wheat, broken rice etc. In the entire policy document there is no mention of horse gram or groundnut so, #3 and #4 are wrong. By elimination we arrived at answer a.”
48,”The only snake that builds a nest is: [1995]”,”1995”,”(a) Chain viper (b) King Cobra (c) Krait (d) Saw-scaled viper”
48,b,”King cobra is the only snake that not only lives in holes but also builds a nest.”
49,”Which one of the following sets is correctly matched? [1995]
(1) Diphtheria, Pneumonia and Leprosy: Hereditary
(2) AIDS, Syphilis and Gonorrhoea: Bacterial
(3) Colour blindness, Haemophilia and Sickle cell anaemia: Sex linked
(4) Polio, Japanese B encephalitis and Plague: Viral”,”1995”,”(a) only 2 (b) only 3 (c) 1 and 4 (d) None of these”
49,d,”Diphtheria, Leprosy, Plague are Bacterial diseases.
AIDS, Polio, Pneumonia, Gonorrhoea, Syphilis- Viral disease.
Japanese B encephalitis – Protozoan disease.
Colour blindness and Haemophilia – Sex linked disease.
Sickle cell anaemia is a genetic disease in which RBC became sickle shaped.”
50,”A person with ‘AB’ blood group is sometimes called a universal recipient because of the [1995]”,”1995”,”(a) lack of antigen in his blood (b) lack of antibodies in his blood (c) lack of both antigens and antibodies in his blood (d) presence of antibodies in his blood”
50,b,”Person having blood group ‘AB’ is called universal recipient because the ‘AB’ blood group has no antibody in the blood plasma. So, the person can accept any type of blood group (i.e. A, B and O)”
51,”Which one of the following is a membrane that protects the developing embryo from desiccation? [1995]”,”1995”,”(a) Amnion (b) Allantois (c) Chorion (d) Yolk sac”
51,a,”The amnion is a membrane that protects the developing embryo by a fluid-filled space called amniotic cavity. Amnion is formed above the embryo.”
52,”Which one of the following antimicrobial drugs, is suitable for treatment of both tuberculosis and leprosy? [1995]”,”1995”,”(a) Isoniazid (b) P-aminosalicylic acid (c) Streptomycin (d) Rifampicin”
52,d,”Leprosy is caused by Mycobacterium leprae and tuberculosis is caused by Mycobacterium tuberculosis. The effective drug for Mycobacterium species is Rifampicin.”
53,”The normal temperature of human on Kelvin scale is [1995]”,”1995”,”(a) 280 (b) 290 (c) 300 (d) 310”
53,d,”Normal body temperature of human is 37° C. But when we convert 37° C into Kelvin it becomes 310 K because 0° C = 0°C + 273 = 273 K 37° C = 37° + 273 = 310 K”
54,”Which of the following elements are present in all proteins? [1995] 1. Carbon 2. Hydrogen 3. Oxygen 4. Nitrogen Codes :”,”1995”,”(a) 2 and 3 (b) 1, 2 and 4 (c) 1, 3 and 4 (d) 1, 2, 3 and 4”
54,d,”Protein is a complex organic compound of Carbon, Hydrogen, Oxygen and Nitrogen. It is a long chain molecule composed of amino acids ( R – CH ( NH2 ) COOH) joined by peptide bonds.”
55,”Which one of the following hormones contains iodine? [1995]”,”1995”,”(a) Thyroxine (b) Testosterone (c) Insulin (d) Adrenaline”
55,a,”Thyroxine hormone and tri-iodothyronine hormone are secreted by thyroid follicular cells of thyroid gland. The major component of thyroxine hormone is iodine. Deficiency of iodine causes goitre in human.”
56,”By Weaving threads of physics, chemistry and biology into a rich tapestry, this remarkable scientist provided a unifying molecular view of the world. He touted the wonderful properties of Vitamin C, first as a cure of common cold and later as preventing agent against cancer.” One of science’s major figures of all time referred to above is [1995]”,”1995”,”(a) G . N . Lewis (b) Linus Carl Pauling (c) Fritz London (d) Walter Heitle”
56,b,”Linus Carl Pauling is much known for his controversial thesis proposing that high dose of vitamin- C would help not only in prevention of common cold but also in prevention of cancer. Linus Carl Pauling is the only person to have received two unshared Nobel prizes in 1954 for chemistry and in 1962 for peace.”
57,”“It begins as a single cell and grows into a merciless disease that claims millions of lives year after year. But scientists are steadily unlocking its mysteries and the fight against it, may now have reached a dramatic turning point. New discoveries promise better therapies and hope in the war against….”. The disease referred to in the above quotation is [1995]”,”1995”,”(a) Cancer (b) AIDS (c) Tuberculosis (d) Alzheimer’s disease”
57,a,”Cancer is a disease characterized by abnormal cell growth and later results in a tumor when a tumor successfully spreads to other parts of the body and starts invading and destroying other healthy tissues. Cancers are classified as carcinomas, sarcomas and melanoma according to the tissues.”
58,”Of the four landmarks in medical history given below, which one was the first to take place ? [1996]”,”1996”,”(a) Organ transplant (b) Bypass surgery (c) Test tube baby (d) Plastic surgery”
58,d,”Organ transplant – 1954 Bypass surgery – 1960 Test tube baby – 1978 Plastic surgery – 1827”
59,”According to the World Health Organisation (WHO), the disease which causes the death of the largest number of people today is [1996]”,”1996”,”(a) AIDS (b) Tuberculosis (c) Malaria (d) Ebola”
59,b,”Tuberculosis is caused by bacteria Mycobacterium tuberculosis. Infection is caused by drinking infected milk, breathing in infected dust, droplet infection through having germs coughed in the face.”
60,”The nutritional deficiency condition that needs to be given top priority for remedial action in India today is [1996]”,”1996”,”(a) Scurvy (b) Rickets (c) Xerophthalmia (d) Pellagra”
60,c,”Xerophthalmia is caused by vitamin A. Generally, this disease is found in poorer sections of society. The symptoms include night blindness and eye irritation.”
61,”Match List-I with List-II and select the correct answer by using the codes given below: [1996] List- I List-II
A. Vitamin 1. Pepsin’
B. Enzyme 2. Carotene
C. Hormone 3. Keratin
D. Protein 4. Progesterone Codes:”,”1996”,”(a) A – 1; B – 2; C – 3; D – 4 (b) A – 2; B – 1; C – 4; D – 3 (c) A – 2; B – 1; C – 3; D – 4 (d) A – 1; B – 2; C – 4; D – 3”
61,b,”Vitamin A group includes retinol. Their parent carotene is a vitamin substance as b- carotene. Pepsin is an enzyme produced in the stomach, which digest protein. Progesterone is a hormone, produced in human ovary. Keratin is a protein. The main component of hair and nail is keratin.”
62,”Which of the following are associated with Diabetes mellitus, a common disease in adults ? [1996] 1. Higher sugar level in blood 2. Lower sugar level in blood 3. Lower insulin level in blood 4. Higher insulin level in blood Select the correct answer by using the codes given below: Codes:”,”1996”,”(a) 2 and 4 (b) 1 and 2 (c) 2 and 3 (d) 1 and 3”
62,d,”Diabetes mellitus is caused due to deficiency of insulin hormone. The hormone insulin maintains the blood sugar in the body. Deficiency of insulin in the human body causes an increase in the sugar level in blood, which leads to Diabetes mellitus.”
63,”Consider the following statements. [1996] AIDS -is transmitted 1. By sexual intercourse 2. By blood transfusion 3. By mosquitoes and other blood sucking insects 4. Across the placenta (a) 1, 2 and 3 are correct (b) 1, 2 and 4 are correct (c) 1, 3 and 4 are correct (d) 1 and 3 are correct”,”1996”,”(a) 1, 2 and 3 are correct (b) 1, 2 and 4 are correct (c) 1, 3 and 4 are correct (d) 1 and 3 are correct”
63,b,”AIDS is a viral disease. The virus is called HIV. This disease transmitted by sexual intercourse, blood transfusion and from pregnant mother to baby through placenta.”
64,”Which of the following would lead to malnutrition? [1996] 1. Overnutrition 2. Undernutrition 3. Imbalanced nutrition Select the correct answer by using the codes given below Codes:”,”1996”,”(a) 2 alone (b) 2 and 3 (c) 1 and 3 (d) 1, 2 and 3”
64,d,”Malnutrition is defined as the insufficient, excessive or imbalanced consumption of nutrients. So undernutrition, overnutrition and imbalanced nutrition lead to malnutrition.”
65,”People drinking water from a shallow hand pump, are likely to suffer from all of the following diseases except [1996] (a) Cholera (b) Typhoid (c) Jaundice (d) Fluorosis”,”1996”,”(a) Cholera (b) Typhoid (c) Jaundice (d) Fluorosis”
65,d,”Cholera, Typhoid and Jaundice are waterborne diseases. In shallow hand pumps there is a possibility of microbial contamination (bacteria) to water. But fluorosis occurs due to the excess amount of fluorine found in water.”
66,”Besides proteins and carbohydrates, other elements of nutritional value found in milk, include [1996] (a) calcium, potassium and iron (b) calcium and potassium (c) potassium and iron (d) calcium and iron”,”1996”,”(a) calcium, potassium and iron (b) calcium and potassium (c) potassium and iron (d) calcium and iron”
66,b,”Besides proteins and carbohydrates, approximately 67% of calcium, 35% of magnesium and 44% of the phosphorus found in milk.”
67,”Fat present below the skin surface in our body, acts as a barrier against [1996] (a) Loss of heat from the body (b) Loss of essential body fluids (c) Loss of salts from the body (d) Entry of harmful micro-organisms from the environment”,”1996”,”(a) Loss of heat from the body (b) Loss of essential body fluids (c) Loss of salts from the body (d) Entry of harmful micro-organisms from the environment”
67,a,”Fat present below the skin surface in our body acts as an insulator against the loss of heat from the body. The deposited fat works as a barrier, which prevents the loss of heat.”
68,”The major chemical compound found in kidney stones is : [1996] (a) urea (b) calcium carbonate (c) calcium oxalate (d) calcium sulphate”,”1996”,”(a) urea (b) calcium carbonate (c) calcium oxalate (d) calcium sulphate”
68,c,”The composition of kidney stone is Calcium oxalate – 80% Uric acid – 5% Amino acid cystine – 2 % Magnesium and – 13% ammonium phosphate”
69,”The pituitary gland by virtue of its tropic hormones controls the secretaoy activity of other endocrine glands. Which one of the following endocrine gland can function independent of the pituitary gland? [1997]”,”1997”,”(a) Thyroid (b) Gonads (c) Adrenals (d) Parathyroid”
69,d,”Parathyroid gland is not controlled by the pituitary. The parathormone which is secreted from this gland regulates calcium and phosphorus ion in the body.”
70,”Oxygen transportation in a human body takes place through [1997] 1. Blood 2. Lungs 3. Tissue The correct sequence of transportation is”,”1997”,”(a) 1, 2, 3 (b) 3, 1, 2 (c) 2, 1, 3 (d) 1, 3, 2”
70,c,”In the human body, oxygen first comes through lungs. From lungs to different tissue via blood.”
71,”Corpus luteum is a mass of cells found in [1997]”,”1997”,”(a) Brain (b) Ovary (c) Pancreas (d) Spleen”
71,b,”Corpus luteum is a mass of cells found in the ovary. It produces progesterone hormone. If the ovary is not fertilized, the corpus-luteum degenerates after about two weeks and is gradually replaced by ordinary ovary tissue.”
72,”Alpha-keratin is a protein, present in [1997]”,”1997”,”(a) Blood (b) Skin (c) Lymph (d) Eggs”
72,b,”Alpha keratin is a protein, found in skin, hair, nail, claws and hooves of animals.”
73,”What is the average fat content of buffalo milk? [1997]”,”1997”,”(a) 7.2% (b) 4.5% (c) 9.0% (d) 10.0%”
73,a,”Average fat content in buffalo milk is 7.2% and average fat content in cow milk is 4.4%. As per the nutrient components, buffalo milk contains all the nutrients in higher proportion than cow’s milk.”
74,”The major component of honey is [1997]”,”1997”,”(a) glucose (b) sucrose (c) maltose (d) fructose”
74,d,”The major component of honey is fructose. Composition of honey in (percentage) Fructose – 38.2 Sucrose – 1.5 Glucose – 31 Minerals – 0.5 Water – 17.1 Maltose – 7.2 Carbohydrate – 4.2”
75,”Arteries supplying blood to the heart are called [1997]”,”1997”,”(a) Carotid arteries (b) Hepatic arteries (c) Coronary arteries (d) Pulmonary arteries”
75,c,”Coronary arteries supply blood to the heart. Carotid arteries supply the blood to the head region. Hepatic arteries supply to the liver and pulmonary arteries supplies blood to the lungs.”
76,”Daily intake of proteins, recommended for a moderately active woman is [1997]”,”1997”,”(a) 30 g (b) 37 g (c) 40 g (d) 46 g”
76,d,”Daily intake of protein for an active woman is 46 grams. But for pregnant women, the protein requirement increases to 47 – 60 grams per day.”
77,”Match List-I with List-II and select the correct answer by using the codes given below: [1997] List- I List-II
A. Malaria 1. Bone marrow
B. Filaria 2. Brain
C. Encephalitis 3. Muscle
D. Leukaemia 4. Lymph node 5. Blood cells”,”1997”,”(a) A – 5; B – 3; C – 2; D – 1 (b) A – 5; B – 4; C – 2; D – 1 (c) A – 4; B – 3; C – 5; D – 1 (d) A – 5; B – 4; C – 1; D – 2”
77,b,”Malaria is the parasitic disease spreads through the sucking of blood through mosquitoes. The malaria parasite invades blood cells. The virus of encephalitis most active in brains. Filaria parasite found in blood lymph and leukaemia is cancer mainly the abnormal cell growth in bone narrow.”
78,”Antigen is a substance which [1997]”,”1997”,”(a) lowers body temperatures (b) destroys harmful bacteria (c) triggers the immune system (d) is used as an antidote to poison”
78,c,”Antigen is a foreign molecule that invade the body of an organism. Antigen also induce immune response to stimulate lymphocyte to produce antibody. The majority of them are proteins and polysaccharides found on the wall of bacteria and on the cell coats of virus.”
79,”The sequencing of the entire genome (the totality of all genes) of an organism was completed in 1996. The organism was: [1997]”,”1997”,”(a) albino mouse (b) yeast (c) human being (d) plasmodium vivax”
79,b,”The sequencing of the entire genome of yeast was completed in 1996.”
