Question

If a population grows in a habitat with limited resources , then following phases of achievement observed

Answer 1

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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.

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Solution

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Correct option is

B

Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

A population growing in a habitat with limited resources shows initially a log phase, followed by phases of acceleration and deceleration and finally an asymptote, when the population density reaches the carrying capacity.

A plot population density (N) in relation to time (t) results in a sigmoid curve. This type of population growth is called verhullat pearl logistic growth and is described by the following equation.

dt

dN

=rN(k−nk)

Where N= population density at time t

r = Intrinsic rate naturall increase

and k= Carrying capaciity

Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.