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Biogeography - GK Questions and Answers for competitive exams on Geography | page-19

Questions
91 Which one of the following is located at the confluence of the Beas and Sutlej rivers ?
A Harike wetland
B Chilika bird sanctuary
C Nagarjunasagar sanctuary
D None of the above

Answer: Option [A]

The correct answer is Harike wetland. The Beas and Sutlej meet at Harike. At the confluence with the Sutlej river, Harike barrage was constructed to divert the combined water flows of both rivers to irrigation canals to serve Rajasthan and Punjab areas.

92 Which one of the following elements is required in small quantities by plants and animals ?
A Phosphorus
B Calcium
C Manganese
D Magnesium

Answer: Option [C]

The correct answer is Magnesium. In addition to macronutrients, organisms require various elements in small amounts. These micronutrients, or trace elements, are present in very small quantities. They include boron (B), chlorine (Cl), manganese (Mn), iron (Fe), zinc (Zn), copper (Cu), molybdenum (Mo), nickel (Ni), silicon (Si), and sodium (Na).

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93 What does PH Value of soils stand for ?
A fertility of soil
B soil profile
C soil horizons
D soil composition

Answer: Option [D]

The correct answer is soil composition. Soil pH is a measure of the acidity or alkalinity of the soil. A pH value is actually a measure of hydrogen ion concentration. Because hydrogen ion concentration varies over a wide range, a logarithmic scale (pH) is used: for a pH decrease of 1, the acidity increases by a factor of 10.

94 Which one of the following are both plant and animal eating animals ?
A Carnivores
B Omnivores
C Autotrophs
D Herbivores

Answer: Option [B]

The correct answer is Omnivores. An omnivore is an organism that eats plants and animals. Omnivores play an important part of the food chain, a sequence of organisms that produce energy and nutrients for other organisms.

95 Green belts have the capacity to reduce the noise pollution level by
A 5-10 dB
B 10-15 dB
C 15-20 dB
D 20-25 dB

Answer: Option [B]

Green belts have the capacity to reduce the noise pollution level by 10-15 dB.

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