Advertisements
Advertisements
Question
What is an age-pyramid?
Advertisements
Solution
An age pyramid is a graphical representation of the distribution of various age groups within a population of a region forming the shape of a pyramid when the population is growing.
APPEARS IN
RELATED QUESTIONS
Represent diagrammatically three kinds of age-pyramids for human populations.
If a population growing exponentially double in size in 3 years, what is the intrinsic rate of increase (r) of the population?
What is reproductive fitness? Explain it with the help of an example.
Animals that can move from fresh water to sea called as ________.
`"dN"/"dt" = "rN" (("K"- "N")/"K")` in logistic growth "K" represents:
Age distribution in a population can influence
Which of the following would necessarily decrease the density of a population in a given habitat?
The following diagrams are the age pyramids of different populations. Comment on the status of these populations.
Given below is the Age Pyramid of the population in one of the states in India as per 2011 census. It depicts the male population on the left-hand side, female population on the right-hand side, newborns towards the base and gradually increasing age groups as we move from base to the top, with the oldest population at the top. Study this pyramid and comment upon the appropriateness of the Assertion and the Reason.
Percentage to the total population
Assertion: It is a stable population.
Reason: The pre-reproductive and reproductive individuals are almost in equal numbers and the post-reproductive individuals are relatively fewer.
The number of lily plants in a pond was found to be 50. After one year, the number. increased to 65. Calculate the natality of lily plants.
