Population Density and Fluctuation — NEET Biology
📚 Practice ConceptThe size of a population for any species is not a static parameter. It keeps changing with time, depending on various factors including food availability, predation pressure and adverse 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. Whatever might be the ultimate reasons, the density of a population in a given habitat during a given period, fluctuates due to changes in four basic processes,
Which of the above statements are NOT correct? S1: The size of a population for any species is a static parameter, remaining largely constant over time. S2: Natality refers to the number of deaths in a population during a given period. S3: Immigration contributes to an increase in population density, whereas emigration leads to a decrease. S4: Under normal conditions, births and deaths are generally the most important factors influencing population density. S5: When a new habitat is being colonised, immigration may contribute more significantly to population growth than birth rates.
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