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प्रश्न
The density of a population in a habitat per unit area is measured in different units. Write the unit of measurement against the following:
Bacteria
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उत्तर
Bacteria - Nos. / Vol
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संबंधित प्रश्न
(a) Name the two growth models that represent population growth and draw the respective growth curves they represent.
(b) State the basics for the difference in the shape of these curves
(c) Which one of the curves represents the human population growth at present? Do you think such a curve is sustainable? Give reason in support of your answer.
Construct an age pyramid which reflects a stable growth status of human population.
How does an age pyramid for human population at given point of time helps the policy-makers in planning for future.
If a population growing exponentially double in size in 3 years, what is the intrinsic rate of increase (r) of the population?
What is an age-pyramid?
Mention the different ways by which the population density of different species can be measured.
Give an account of population regulation.
Measures of ‘Central tendency’ refer to:
Nutrient enrichment of water body result.
The phenomenal and rapid increase of population in a short period is called ______.
`"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 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
Draw an age pyramid for the ‘zero population growth rate’.
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.
What would be the best method to measure the total population density of a dense bacterial culture in a petridish and why?
Identify the type of pyramid given above. Write the identifying feature on the basis of which you identified it.
