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Biogeography - GK Questions and Answers for competitive exams on Geography | page-23

Questions
111 Which one of the following elements is required in small quantities by plants and animals ?
A Iron
B Calcium
C Sulphur
D Phosphorus

Answer: Option [A]

The correct answer is Iron. The final essential elements are used in small quantities by the plant, but nevertheless are necessary for plant survival. These micronutrients include iron (Fe), boron (B), copper (Cu), chlorine (Cl), Manganese (Mn), molybdenum (Mo), zinc (Zn), cobalt (Co), and nickel (Ni).

112 Which one of the following animals eat only flesh ?
A Herbivores
B Carnivores
C Omnivores
D Detritivores

Answer: Option [B]

The correct answer is Carnivores. A carnivore is an organism that eats mostly meat, or the flesh of animals. Sometimes carnivores are called predators.

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113 Which one of the following is not a heterotroph ?
A Catfish
B Backswimmers
C Protozoa
D Duckweed

Answer: Option [D]

The correct answer is Duckweed. Duckweed is autotrophic, so the plant uses photosynthesis to get it's nutrients.

114 Which one of the following is the most important factor responsible for decline of biodiversity ?
A Genetic assimilation
B Destruction of habitat
C Controlling pests
D Controlling predatores

Answer: Option [B]

The correct answer is Destruction of habitat. Destruction of habitat is the most important factor responsible for decline in biodiversity. The disbalance in biodiversity taking place is just because of habitat fragmentation which results in loss of endangered animal and plant species.

115 When was CITES convention held ?
A 1965
B 1975
C 1985
D 1995

Answer: Option [B]

The correct answer is 1975. CITES is a multilateral treaty to protect endangered plants and animals from the threats of international trade. The convention was opened for signature in 1973 and CITES entered into force on 1 July 1975.

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