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Solved Examples on Organisms and Population

Question1: The abundance of a species population within its habitat is called [CBSE PMT 1995]

(a) Niche density 

(b) Absolute density      

(c) Relative density        

(d) Regional density

Answer: a

Explanation: The abundance of a species population within its habitat is called niche density.

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Question2: Which of the following factors regulate human life with reference to population density [AMU 1989; CPMT 1994]

(a) Availability of blood, housing and health facilities  

(b) Urbanisation  

(c) Climatic conditions                          

(d) All the above

Answer: d

Explanation: All of the above factors regulate human life with reference to population density.

Question2: The concept that "Population tends to increase geometrically while food supply increase arithmetically" was put forward by [BHU 2000 CBSE PMT 1995]

(a) Thomas...

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