Advertisements
Advertisements
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:
Fish
Advertisements
उत्तर
Fish - Wt. / area
APPEARS IN
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.
Represent diagrammatically three kinds of age-pyramids for human populations.
"Analysis of age-pyramids for human population can provide important inputs for long-term planning strategies." Explain.
What is an age-pyramid?
Define the carrying capacity.
Animals that can move from fresh water to sea called as ________.
Give an account of population regulation.
Nutrient enrichment of water body result.
The phenomenal and rapid increase of population in a short period is called ______.
Which one of the following organisms reproduces sexually only once in its lifetime?
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
List any four characters that are employed in human population census.
Comment on the following figures: 1, 2 and 3:
A, B, C. D, G, P, Q, R, S are species
The following diagrams are the age pyramids of different populations. Comment on the status of these populations.
What would be the best method to measure the total population density of a dense bacterial culture in a petridish and why?
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:
With the help of neatly labelled diagrams, explain the different types of age pyramids of human population.
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.
