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Question
Which one of the following is one of the characteristics of biological community?
Options:
A .  Stratification
B .  Natality
C .  Mortality
D .  Sex ratio
Answer: Option A
:
A
Stratification is the characteristic of a biological community.Depending upon the physical and physiological requirement of the diverse species in a biological community, the organisms are organised in a recognizable structure or pattern called stratification. For eg. a forest ecosystem can be stratified into the upper canopy, the middle understory and the lower ground levels. Natality (The ratio of number of births to the size of population), mortality (The number of deaths in a given area or period)and sex ratio (number of males per thousand females in the population of a community) are the charateristics of population in a community.

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