Organisms and Population (part-2)

What is population? How many marks carried by the chapter Organisms and Population in class 12 board examinations? Why we study the chapter Organisms and Population? How important the chapter Organisms and Population is? What is adaptation? What are heliophytes? What is mangrove plant?

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For any species the size of a population is not a static parameter. It keeps changing with time and depends on various factors including food availability, predation pressure and reduces weather. In fact, it is these changes in population density that give us some idea of what is happening to the population – whether it is flourishing or declining.