Environmental Engineering

351. Soap and detergents are the source of organic pollutants like:

1. glycerol
2. polyphosphates
3. sulphonated hydrocarbons
4. all of these

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352. Species that occur in different geographical regions separated by special barrier are:

1. Allopatric
2. Sympatric
3. Sibling
4. None of the above

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353. Succession initiated on large sand deposits or deserts is called

1. hydrosere
2. psammosere
3. xerosere
4. oxylosere

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354. Symbiosis is shown by

1. E.coli
2. Cuscuta
3. Rafflesia
4. Monotropa

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355. Synecology deals with

1. Ecology of many species
2. Ecology of many populations
3. Ecology of community
4. None of the above

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356. The carrying capacity of a population is determined by its

1. population growth rate
2. natality
3. mortality
4. limiting resources

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357. The concept of ecological pyramid was first proposed by

1. E.P. Odum
2. A.G. Tansley
3. Juday
4. Charles Elton

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358. The concept that 'population tends to increase geometrically while food supply increases arithmetically’ was put forward by

1. Adam Smith
2. Charles Darwin
3. Thomas Malthus
4. Stuart Mill

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359. The conversion of a pond to a climax forest community is an example of

1. xerarch succession
2. mesarch succession
3. hydrarch succession
4. all of these

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360. The cutting down of trees and setting them on fire and raising crops on the resulting ash is called:

1. Pyrolysis
2. Jhum
3. Taungya system
4. Shift cultivation

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