Q.14653·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. What is the crux of the passage?View question
Q.14654·Miscellaneous·2011·EasyMicrofinance is the provision of financial services to people of low-income groups. This includes both the consumers and the self-employed. The service/services rendered under microfinance is/are: 1.Credit facilities 2.Savings facilities 3.Insurance facilities 4.Fund Transfer facilities Select the correct answer using the codes given below the lists:View question
Q.14655·Miscellaneous·2011·EasyConsider the following figure and answer the item that follows: A square is divided into four rectangles as shown above. The lengths of the sides of rectangles are natural numbers. The areas of two rectangles are indicated in the figure. What is the length of each side of the square?View question
Q.14656·Miscellaneous·2011·EasyConsider the following figure and answer the item that follows: What is the minimum number of different colours required to paint the figure given above such that no two adjacent regions have the same colour?View question
Q.14657·Miscellaneous·2011·EasyA contract on construction job specifies a penalty for delay in completion of the work beyond a certain date is as follows : ₹ 200 for the first day, ₹ 250 for the second day, ₹ 300 for the third day etc., the penalty for each succeeding day being ₹ 50 more than that of the preceding day. How much penalty should the contractor pay if he delays the work by 10 days ?View question
Q.14658·Miscellaneous·2011·EasyAll revenues received by the Union Government by way of taxes and other receipts for the conduct of Government business are credited to theView question
Q.14659·Miscellaneous·2011·EasyThere are four routes to travel from city A to city B and six routes from city B to city C. How many routes are possible to travel from the city A to city C?View question
Q.14660·Miscellaneous·2011·EasyThe authorization for the withdrawal of funds from the Consolidated Fund of India must come fromView question
Q.14661·Miscellaneous·2011·EasyEcosystems provide people with a variety of goods and services; food, clean water, clean air, flood control, soil stabilization, pollination, climate regulation, spiritual fulfilment and aesthetic enjoyment, to name just a few. Most of these benefits either are irreplaceable or the technology necessary to replace them is prohibitively expensive. For example, potable fresh water can be provided by desalinating sea-water, but only at great cost. The rapidly expanding human population has greatly modified the Earth’s ecosystems to meet their increased requirements of some of the goods and services, particularly food, fresh water, timber, fibre and fuel. These modifications have contributed substantially to human well-being and economic development. The benefits have not been equally distributed. Some people have actually been harmed by these changes. Moreover, short-term increases in some ecosystem goods and services have come at the cost of the long-term degradation of others. For example, efforts to increase the production of food and fibre have decreased the ability of some ecosystems to provide clean water, regulate flooding and support biodiversity. The passage mentions that “some people have actually been harmed by these changes”. What does it imply? 1. The rapid expansion of population has adversely affected some people. 2. Sufficient efforts have not been made to increase the production of food and fibre. 3. In the short term some people may be harmed, but in the long term everyone will benefit from modifications in the Earth’s ecosystems. Which of the statements given above is/are correct?View question
Q.14662·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 treatment yielded effective relief?View question
Q.14663·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.14664·Miscellaneous·2011·EasyThere are 100 students in a particular class. 60% students play cricket, 30% students play football and 10% students play both the games. What is the number of students who play neither cricket nor football ?View question
Q.14665·Miscellaneous·2011·EasyWith what purpose is the Government of India promoting the concept of “Mega Food Parks”? 1.To provide good infrastructure facilities for the food processing industry. 2.To increase the processing of perishable items and reduce wastage. 3.To provide emerging and eco-friendly food processing technologies to entrepreneurs. Select the correct answer using the codes given below:View question
Q.14666·Miscellaneous·2011·EasyIn India, if a religious sect/community is given the status of a national minority, what special advantages is it entitled to? 1.It can establish and administer exclusive educational institutions. 2.The President of India automatically nominates a representative of the community to Lok Sabha. It can derive benefits from the Prime Minister’s 15-Point Programme. Which of the statements given above is/are correct?View question
Q.14668·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.14669·Miscellaneous·2011·EasyWhich of the two towns has a higher number of persons with Diabetes?View question
Q.14670·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