Advertisements
Advertisements
प्रश्न
Draw an age pyramid for the ‘zero population growth rate’.
Advertisements
उत्तर
The following pyramid shows a population with a zero growth rate.
 |
 |
 |
Representation of age pyramids for the human population
APPEARS IN
संबंधित प्रश्न
List the attributes that populations but not individuals possess.
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.
Study the flow chart given below and complete the equation that follows by identifying 1, 2, 3 and 4.
Nt + 1 = Nt + {(1+ 2) − (3 + 4)}
Mention the different ways by which the population density of different species can be measured.
Give an account of population regulation.
Nutrient enrichment of water body result.
Population having large number of postreproductive and small number of prereproductive age group is called
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:
Deer
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
Write the best method to measure the population density of a single Banyan tree in comparison to Partlzenium weeds in a forest by an ecologist. Explain and justify your answer.
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.
Important attributes belonging to a population but not to an individual are:
- Birth rate and death rate
- Male and female
- Birth and death
- Sex-ratio
Select the correct option from the given options:
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.
