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Population Attributes And Growth Free Doubts and Solutions

CBSE - XII Science - Biology - Organisms and Populations

if mean and median pertaining to certain character of the populations are of same value,the following is most likely to occur, 1: a skewed curve 2:  a normal distribution 3: a bi modal distribution 4:  a T-shaped curve

Asked by imtiyazmulla68 30th March 2018, 9:51 PM
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CBSE - XII Science - Biology - Organisms and Populations

whats the difference in expanding and stable graph of age structure

Asked by ashutosh25807 15th January 2018, 8:06 AM
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CBSE - XII Science - Biology - Organisms and Populations

What does 'per capita' mean in birth and death rate

Asked by ashutosh25807 15th January 2018, 7:52 AM
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CBSE - XII Science - Biology - Organisms and Populations

Higher fertility in developing world is partially explained by large number of hand needed to perform work. Explain me this line?

Asked by ashutosh25807 15th January 2018, 7:46 AM
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CBSE - XII Science - Biology - Organisms and Populations

Explain Verhlust - Pearl logistic growth of a population with suitable graphical representation.
Why do cattle avoid browsing on calotropis plants? explain.

Asked by pksunilnair 12th December 2017, 9:17 PM
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CBSE - XII Science - Biology - Organisms and Populations

List the different population attributes which an individual does not possess. Explain any three.

Asked by Topperlearning User 16th June 2014, 4:19 PM
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CBSE - XII Science - Biology - Organisms and Populations

Differentiate between S-shaped and J-shaped growth curve.

Asked by Topperlearning User 16th June 2014, 4:19 PM
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CBSE - XII Science - Biology - Organisms and Populations

(i) Write the importance of measuring the size of a population in a habitat or an ecosystem. (ii) Explain how age structure plays an important role in population growth.

Asked by Topperlearning User 16th June 2014, 4:19 PM
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CBSE - XII Science - Biology - Organisms and Populations

(i) What is carrying capacity? (ii) Write any four population attributes.

Asked by Topperlearning User 16th June 2014, 4:19 PM
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CBSE - XII Science - Biology - Organisms and Populations

Define population and community. 

Asked by Topperlearning User 16th June 2014, 4:19 PM
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CBSE - XII Science - Biology - Organisms and Populations

(i) What is ‘r’ in the population equation? (ii) How does the increase and decrease in the value of ‘r’ affect the population size?

Asked by Topperlearning User 16th June 2014, 4:19 PM
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CBSE - XII Science - Biology - Organisms and Populations

Why cannot a population live alone by itself in nature? 

Asked by Topperlearning User 16th June 2014, 4:19 PM
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CBSE - XII Science - Biology - Organisms and Populations

What are the two types of population growth curves? What are the phases involved in both types of curves?

Asked by Topperlearning User 16th June 2014, 4:19 PM
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CBSE - XII Science - Biology - Organisms and Populations

Eichhornia crassipes is an alien hydrophyte introduced in India. Mention the problems posed by this plant.

Asked by Topperlearning User 16th June 2014, 4:19 PM
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CBSE - XII Science - Biology - Organisms and Populations

Give an example where percentage cover is a more meaningful measure of the population size.

Asked by Topperlearning User 16th June 2014, 4:19 PM
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CBSE - XII Science - Biology - Organisms and Populations

What does the sigmoid growth curve of a population mean? 

Asked by Topperlearning User 16th June 2014, 4:19 PM
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CBSE - XII Science - Biology - Organisms and Populations

Why in a natural environment with plenty of food but no predation, a population shows J-shaped growth curve? 

Asked by Topperlearning User 16th June 2014, 4:19 PM
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