With the help of a graph, explain the population growth curve when resources are
(i) Limiting
(ii) Not limiting

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Solution

Population growth rate is defined as change in number of individuals in a population over time. It is represented by dN/dT= rN. In this equation, dN/dTd, N is population size, T is time, and r is the per capita rate of increase.
Limited- When the per capita rate of increase (r) decreases as the population increases towards a maximum limit, then we get logistic growth.
Not Limiting- When the per capita rate of increase (r) takes the same positive value regardless of the population size, then we get exponential growth.

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Similar questions

State whether the following statements are true (T) or false (F).

I. Carrying capacity of a population is represented by ‘r’.

II. A population growing in a habitat with limited resources shows initially a lag phase.

III. Logistic growth model is represented by a J- shaped curve.

Q. Study the following statements (A - D) related to the logistic growth model and select the wrong statements.

A. A population growing in a habitat with limited resources initially shows a lag phase.

B. Carrying capacity of a population is represented by ‘r’.

C. Logistic growth model is not a realistic growth model.

D. Logistic growth model is represented by a sigmoid curve.

Q. A population growing in a habitat with limited resources shows four phases of growth in the following sequence

Q. Assertion :A population growing in a habitat with limited resources shows shows initially a lag phase, followed by phase of acceleration and deceleration and finally as asymptote, when the population density reaches the carrying capacity. Reason: In Verhulst-Pearl Logistic growth, plot of N (population density) at time (t) results in a sigmoid curve.

Q. With the help of suitable diagram describe the logistic population growth curve.

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With the help of a graph, explain the population growth curve when resources are (i) Limiting(ii) Not limiting

With the help of a graph, explain the population growth curve when resources are
(i) Limiting
(ii) Not limiting