I. | Nt+1 = Nt + [(B+I) – (D+E)] |
II. | B is a measure of Natality and D is a measure of Mortality |
III. | If (B+I) is less than (D+E), the population density will increase |
1. | Only I and II are correct | 2. | Only I and III are correct |
3. | Only II and III are correct | 4. | I, II and III are correct |
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
All the following are correct about the exponential growth of population except:
1. | It is represented by the equation dt/dN = rN |
2. | Resources in the habitat are unlimited |
3. | The rate of natural increase is represented by “r” |
4. | In 1981, the ‘r’ value for human population in India was 0.0205 |
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
When population density is plotted against time, the exponential growth curve is:
1. | S shaped | 2. | Straight line |
3. | J shaped | 4. | Hyperbola |
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
In the formula for exponential growth (dN/dt = rN), what does ‘r’ stand for?
1. the carrying capacity of the environment
2. the change in time
3. the number of individuals in the population
4. the intrinsic rate of natural increase of the population
Which of the following is/are true for the given equation?
Nt = N0 ert
I. | It is the integral form of exponential growth equation |
II. | The rate of natural increase is represented by “r” |
III. | “e” is the base of natural logarithm [2.71828] |
1. | I and II only | 2. | I and III only |
3. | II and III only | 4. | I, II and III |
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
Assertion (A): | The logistic growth model is more realistic for most animal populations in nature. |
Reason (R): | Resources for growth for most animal populations are finite and become limiting sooner or later in the nature. |
1. | (A) is True but (R) is False. |
2. | Both (A) and (R) are True and (R) correctly explains (A). |
3. | (A) is False but (R) is True. |
4. | Both (A) and (R) are True but (R) does not explain (A). |
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.