Q.14653·Miscellaneous·2011·EasyDuring a party, a person was exposed to contaminated water. A few days later, he developed fever and loose motions. He suffered for some days before going to a doctor for treatment. On starting the treatment, he soon became better and recovered completely a few days later. The following graph shows different phases of the person's disease condition as regions A, B, C, D and E of the curve. Which region of the curve indicates that the person began showing the symptoms of infection?View question
Q.14654·Miscellaneous·2011·EasyA species that exerts an influence out of proportion to its abundance in an ecosystem is called a keystone species. The keystone species may influence both the species richness of communities and the flow of energy and materials through ecosystems. The sea star Pisaster ochraceus , which lives in rocky intertidal ecosystems on the Pacific coast of North America, is also an example of a keystone species. Its preferred prey is the mussel Mytilus californianus . In the absence of sea stars, these mussels crowd out other competitors in a broad belt of the intertidal zone. By consuming mussels, sea star creates bare spaces that are taken over by a variety of other species. A study at the University of Washington demonstrated the influence of Pisaster on species richness by removing sea stars from selected parts of the intertidal zone repeatedly over a period of five years. Two major changes occurred in the areas from which sea stars were removed. First, the lower edge of the mussel bed extended farther down into the intertidal zone, showing that sea stars are able to eliminate mussels completely where they are covered with water most of the time. Second, and more dramatically, 28 species of animals and algae disappeared from the sea star removal zone. Eventually only Mytilus , the dominant competitor, occupied the entire substratum. Through its effect on competitive relationships, predation by Pisaster largely determines which species live in the rocky intertidal ecosystems. Consider the following assumptions: 1. The food chains/food web in an ecosystem are influenced by keystone species. 2. The presence of keystone species is a specific characteristic of aquatic ecosystems. 3. If the keystone species is completely removed from an ecosystem, it will lead to the collapse of the ecosystem. With reference to the passage, which of the above assumptions is/are valid?View question
Q.14655·Miscellaneous·2011·EasyA species that exerts an influence out of proportion to its abundance in an ecosystem is called a keystone species. The keystone species may influence both the species richness of communities and the flow of energy and materials through ecosystems. The sea star Pisaster ochraceus , which lives in rocky intertidal ecosystems on the Pacific coast of North America, is also an example of a keystone species. Its preferred prey is the mussel Mytilus californianus . In the absence of sea stars, these mussels crowd out other competitors in a broad belt of the intertidal zone. By consuming mussels, sea star creates bare spaces that are taken over by a variety of other species. A study at the University of Washington demonstrated the influence of Pisaster on species richness by removing sea stars from selected parts of the intertidal zone repeatedly over a period of five years. Two major changes occurred in the areas from which sea stars were removed. First, the lower edge of the mussel bed extended farther down into the intertidal zone, showing that sea stars are able to eliminate mussels completely where they are covered with water most of the time. Second, and more dramatically, 28 species of animals and algae disappeared from the sea star removal zone. Eventually only Mytilus , the dominant competitor, occupied the entire substratum. Through its effect on competitive relationships, predation by Pisaster largely determines which species live in the rocky intertidal ecosystems. Consider the following argument: “In order to be a teacher one must graduate from college. All poets are poor. Some Mathematicians are poets. No college graduate is poor.” Which one of the following is not a valid conclusion regarding the above argument?View question
Q.14656·Miscellaneous·2011·EasyA species that exerts an influence out of proportion to its abundance in an ecosystem is called a keystone species. The keystone species may influence both the species richness of communities and the flow of energy and materials through ecosystems. The sea star Pisaster ochraceus , which lives in rocky intertidal ecosystems on the Pacific coast of North America, is also an example of a keystone species. Its preferred prey is the mussel Mytilus californianus . In the absence of sea stars, these mussels crowd out other competitors in a broad belt of the intertidal zone. By consuming mussels, sea star creates bare spaces that are taken over by a variety of other species. A study at the University of Washington demonstrated the influence of Pisaster on species richness by removing sea stars from selected parts of the intertidal zone repeatedly over a period of five years. Two major changes occurred in the areas from which sea stars were removed. First, the lower edge of the mussel bed extended farther down into the intertidal zone, showing that sea stars are able to eliminate mussels completely where they are covered with water most of the time. Second, and more dramatically, 28 species of animals and algae disappeared from the sea star removal zone. Eventually only Mytilus , the dominant competitor, occupied the entire substratum. Through its effect on competitive relationships, predation by Pisaster largely determines which species live in the rocky intertidal ecosystems. A student on her first 3 tests received an average score of N points. If she exceeds her previous average score by 20 points on her fourth test, then what is the average score for the first 4 tests?View question
Q.14657·Miscellaneous·2011·EasyA company marketing food products advertises that its items do not contain trans-fats. What does this campaign signify to the customers? 1.The food products are not made out of hydrogenated oils. 2.The food products are not made out of animal fats/oils. 3.The oils used are not likely to damage the cardiovascular health of the consumers. Which of the statements given above is/are correct?View question
Q.14658·Miscellaneous·2011·EasyConsider the following actions which the Government can take: Devaluing the domestic currency. Reduction in the export subsidy. Adopting suitable policies which attract greater FDI and more funds from FIIs. Which of the above action/actions can help in reducing the current account deficit?View question
Q.14659·Miscellaneous·2011·EasyIndia has experienced persistent and high food inflation in the recent past. What could be the reasons? 1. Due to a gradual switch-over to the cultivation of commercial crops, the area under the cultivation of food grains has steadily decreased in the last five years by about 30%. 2. As a consequence of increasing incomes, the consumption patterns of the people have undergone a significant change. 3. The food supply chain has structural constraints. Which of the statements given above are correct?View question
Q.14660·Miscellaneous·2011·EasySatellites used for telecommunication relay are kept in a geostationary orbit. A satellite is said to be in such an orbit when: 1. The orbit is geosynchronous. 2. The orbit is circular. 3. The orbit lies in the plane of the Earth’s equator. 4. The orbit is at an altitude of 22,236 km. Select the correct answer using the codes given below:View question
Q.14661·Miscellaneous·2011·EasyA moral act must be our own act; must spring from our own will. If we act mechanically, there is no moral content in our act. Such action would be moral, if we think it proper to act like a machine and do so. For, in doing so, we use our discrimination. We should bear in mind the distinction between acting mechanically and acting intentionally. It may be moral of a king to pardon a culprit. But the messenger carrying out the order of pardon plays only a mechanical part in the king’s moral act. But if the messenger were to carry out the king’s order considering it to be his duty, his action would be a moral one. How can a man understand morality who does not use his own intelligence and power of thought, but lets himself be swept along like a log of wood by a current? Sometimes a man defies convention and acts on his own with a view to absolute good. The passage contains a statement “lets himself be swept along like a log of wood by a current.” Among the following statements, which is/are nearest in meaning to this? 1. A person does not use his own reason. 2. He is susceptible to influence/pressure. 3. He cannot withstand difficulties/challenges. 4. He is like a log of wood Select the correct answer using the codes given below :View question
Q.14662·Miscellaneous·2011·EasyConsider the following: 1. Carbon dioxide 2. Oxides of Nitrogen 3. Oxides of Sulphur Which of the above is/are the emission/ emissions from coal combustion at thermal power plants?View question
Q.14663·Miscellaneous·2011·EasyA species that exerts an influence out of proportion to its abundance in an ecosystem is called a keystone species. The keystone species may influence both the species richness of communities and the flow of energy and materials through ecosystems. The sea star Pisaster ochraceus , which lives in rocky intertidal ecosystems on the Pacific coast of North America, is also an example of a keystone species. Its preferred prey is the mussel Mytilus californianus . In the absence of sea stars, these mussels crowd out other competitors in a broad belt of the intertidal zone. By consuming mussels, sea star creates bare spaces that are taken over by a variety of other species. A study at the University of Washington demonstrated the influence of Pisaster on species richness by removing sea stars from selected parts of the intertidal zone repeatedly over a period of five years. Two major changes occurred in the areas from which sea stars were removed. First, the lower edge of the mussel bed extended farther down into the intertidal zone, showing that sea stars are able to eliminate mussels completely where they are covered with water most of the time. Second, and more dramatically, 28 species of animals and algae disappeared from the sea star removal zone. Eventually only Mytilus , the dominant competitor, occupied the entire substratum. Through its effect on competitive relationships, predation by Pisaster largely determines which species live in the rocky intertidal ecosystems. In a group of persons, 70% of the persons are male and 30% of the persons are married. If two-sevenths of the males are married, what fraction of the females is single?View question
Q.14664·Miscellaneous·2011·EasyA species that exerts an influence out of proportion to its abundance in an ecosystem is called a keystone species. The keystone species may influence both the species richness of communities and the flow of energy and materials through ecosystems. The sea star Pisaster ochraceus , which lives in rocky intertidal ecosystems on the Pacific coast of North America, is also an example of a keystone species. Its preferred prey is the mussel Mytilus californianus . In the absence of sea stars, these mussels crowd out other competitors in a broad belt of the intertidal zone. By consuming mussels, sea star creates bare spaces that are taken over by a variety of other species. A study at the University of Washington demonstrated the influence of Pisaster on species richness by removing sea stars from selected parts of the intertidal zone repeatedly over a period of five years. Two major changes occurred in the areas from which sea stars were removed. First, the lower edge of the mussel bed extended farther down into the intertidal zone, showing that sea stars are able to eliminate mussels completely where they are covered with water most of the time. Second, and more dramatically, 28 species of animals and algae disappeared from the sea star removal zone. Eventually only Mytilus , the dominant competitor, occupied the entire substratum. Through its effect on competitive relationships, predation by Pisaster largely determines which species live in the rocky intertidal ecosystems. The houses of A and B face each other on a road going north-south, A’s being on the western side. A comes out of his house, turns left, travels 5 km, turns right, travels 5 km to the front of D’s house. B does exactly the same and reaches the front of C’s house. In this context, which one of the following statements is correct?View question
Q.14665·Miscellaneous·2011·EasyConsider the following Velocity Time graph. It shows two trains starting simultaneously on parallel tracks. With reference to the above graph, which one of the following statements is not correct?View question
Q.14666·Miscellaneous·2011·EasyConsider the following figures: What is the missing number ?View question
Q.14667·Miscellaneous·2011·EasyIn the Union Budget 2011-12, a full exemption from the basic customs duty was extended to the bio-based asphalt (bioasphalt). What is the importance of this material? 1. Unlike traditional asphalt, bio-asphalt is not based on fossil fuels. 2. Bioasphalt can be made from non-renewable resources. 3. Bioasphalt can be made from organic waste materials. 4. It is eco-friendly to use bioasphalt for surfacing of the roads. Which of the statements given above are correct?View question
Q.14668·Miscellaneous·2011·EasyConsider the four age pyramids given below namely A, B, C, and D representing four different countries. Which one of them indicates the declining population?View question
Q.14669·Miscellaneous·2011·EasyConsider the following figure and answer the item that follows : What is the total number of triangles in the above grid?View question
Q.14670·Miscellaneous·2011·EasyStudy the following figure: A person goes from A to B always moving to the right or downwards along the lines. How many different routes can he adopt ? Select the correct answer from the codes given below :View question