English
Karnataka Board PUCPUC Science 2nd PUC Class 12

List the attributes that populations but not individuals possess. - Biology

Advertisements
Advertisements

Question

List the attributes that populations but not individuals possess.

Long Answer
Short Answer
Advertisements

Solution 1

Some characteristics of a population differ from those of individual members. Individuals are born and die, whereas populations have birth and death rates. Each population has distinct characteristics, including age distribution, genetic composition, and growth models. A population has a sex ratio, although individuals might be male or female.

shaalaa.com

Solution 2

A population possesses several attributes that individuals do not have. These include population density (number of individuals per unit area), biotic potential (reproductive capacity of the population), environmental resistance (factors limiting population growth like predators and resources), population growth (changes in population size over time), carrying capacity (maximum population size the environment can sustain), population growth curve (pattern of population increase), age distribution, sex ratio, population dispersal, and population bioenergetics. These attributes collectively describe the dynamics and characteristics of a group of organisms living in the same area, which an individual alone cannot exhibit.

shaalaa.com
  Is there an error in this question or solution?
Chapter 15: Organisms and Populations - NCERT EXERCISES WITH ANSWERS [Page 616]

APPEARS IN

Nootan Biology [English] Class 12 ISC
Chapter 15 Organisms and Populations
NCERT EXERCISES WITH ANSWERS | Q 15. | Page 616

RELATED QUESTIONS

(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.


Study the graph given below and answer the questions that follow :

(i) Write the status of food and space in the curves (a) and (b).
(ii) In the absence of predators, which one of the two curves would appropriately depict the prey population?
(iii) Time has been shown on X-axis and there is a parallel dotted line above it. Give the significance of this dotted line


How does an age pyramid for human population at given point of time helps the policy-makers in planning for future.


"Analysis of age-pyramids for human population can provide important inputs for long-term planning strategies." Explain.


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?


Define the carrying capacity.


What is reproductive fitness? Explain it with the help of an example.


Answer the following question.
What is "population" according to you as a biology student? 


`"dN"/"dt" = "rN" (("K"- "N")/"K")` in logistic growth "K" represents:


What parameters are used for tiger census in our country’s national parks and sanctuaries?



Label the three tiers 1, 2, 3 given in the above age pyramid.


List any four characters that are employed in human population census.


What would be the best method to measure the total population density of a dense bacterial culture in a petridish and why?


With the help of neatly labelled diagrams, explain the different types of age pyramids of human population.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×