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प्रश्न
Answer the following question.
"The size of a population for any species is not a static parameter." Justify the statement with specific reference to fluctuations in the population density of a region in a given period of time.
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उत्तर
The size of a population of any species is not a static parameter. It keeps changing in time, depending on various factors including food availability, predation pressures, and weather.
The population density in a given period can fluctuate due to the following four factors:
- Natality: It refers to the number of births during a given period in the population that are added to the initial density.
- Mortality: It refers to the number of deaths during a given period that reduced the size.
- Immigration: It is the number of individuals of the same species that have come into the habitat from elsewhere during the given period.
- Emigration: It is the number of individuals who left the habitat and have gone elsewhere.
संबंधित प्रश्न
Construct an age pyramid which reflects a stable growth status of human population.
"Analysis of age-pyramids for human population can provide important inputs for long-term planning strategies." Explain.
What is an age-pyramid?
Measures of ‘Central tendency’ refer to:
`"dN"/"dt" = "rN" (("K"- "N")/"K")` in logistic growth "K" represents:
Age distribution in a population can influence
The density of a population in a habitat per unit area is measured in different units. Write the unit of measurement against the following:
Banyan
The density of a population in a habitat per unit area is measured in different units. Write the unit of measurement against the following:
Fish
What type of population growth is represented by the above age pyramid?
What would be the best method to measure the total population density of a dense bacterial culture in a petridish and why?
