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Biology
225)The dreaded human disease, syphilis, is caused by
	fungus		an animal parasite
	a bacterium		virus
Answer :
226)An anaerobic saecies of the bacterium Clostridium caused a very serious disease in human populations. Which of the following disease is it?
	typhoid		tuberculosis
	botulism		pneumonia
Answer :
227)Reserpine is used to
	cure arthritis		alleviate pain
	increase blood pressure when it is low		reduce high blood pressure
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228)Population refers to
	all the animals, including man, living in a particular area		individuals of a particular species living in an area
	all the human beings living in a particular area		all the organism, plants as well as animals, living in a particular area
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229)An ecosystem consists of
	all the plants and animals of an area		carnivores and herbivores of an area
	producers, consumers, and decomposers in a particular locality		a living community and its environment
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230)A praire is
	a locality in Australia		a grassland without trees
	a kind of plant		an area in South America on the side of river Amazon
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231)A biologist kept euglenas in various experimental conditions. In one of these, the euglenas lost their stigmas. This situation was
	total darkness		magnesium-free pond water
	pH 7.5		constant temperature of 30oC
Answer :
232)It is said that the spiders of the Himalayas are native to the highest teritory - higher than any animal of earth. Spiders are carnivorous. Therefore they must thrive by
	eating insects blown up the mountains by winds		making daily firays to lower altitudes
	becoming herbivorous		adapting to the manufacture of organic materials from inorganic substances
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233)Taiga represents
	the treeless ground bordering the Arctic ocean		a genus of tiger facing extinction
	a fossil of an extinct species of tiger		coniferous forests
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234)In a very hot climate, one is likely to find
	organisms capable of aestivation		short-tailed deer
	organisms capable of hibernation		None of these
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235)Snakes and vultures are eating rats in a field,. If wild dogs are let into the field the immediate result will be a
	decrease in the number of vultures		decrease in the number of snakes
	increase the number of snakes		decrease in the number of rats
Answer :
236)Which of the following is a famous agricultural scientist who has been awarded a Noble peace prize?
	Hargobind Khorana		M S Swaminathan
	S. Chandrasekhar		Norman Borlaug
Answer :
237)In which part of India does saffron grow
	Nilgiris hills		Darjeeling
	Jammu and Kashmir		Madhya Pradesh
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238)Seeds can best be preserved in
	hot and dry conditions		hot and wet conditions
	cool and wet conditions		cool and dry conditions
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239)Tea plants thrive best in
	alkaline soils with average rainfall above 150cm and temperature between 20-30oC		alkaline soils with average rainfall above 150cm and temperature between 15-20oC
	acidic soils with average rainfall above 150cm and temperature between 20-30oC		None of these
Answer :

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