Q4 of 70 Page 95

Comment on the growth curve given below.


The given graph shows a population growing in a habitat having limited resources.

1. The graph shows an initial lag phase. After that an increase in population takes place known as acceleration following which deceleration takes place and at last asymptote occurs.


2.When the population reaches carrying capacity. A plot is formed showing sigmoid curve.


3. This type of growth is known as Verhulst-Pearl logistic growth.


4. This is represented by an equation: dN/dT=rN(K-N/K)


dN/dT=rN(1-N/K)


Here, (1-N/K) is environmental resistance


More from this chapter

All 70 →
2

An individual and a population has certain characteristics. Name these attributes with definitions.

 3

The following diagrams are the age pyramids of different populations. Comment on the status of these populations.


 5

A population of Paramoecium caudatum was grown in a culture medium. After 5 days the culture medium became overcrowded with Paramoeium and had depleted nutrients. What will happen to the population and what type of growth curve will the population attain? Draw the growth curve.

 6

Discuss the various types of positive interactions between species.