Q. No.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
When population density is plotted against time, the exponential growth curve is:
| 1. | S shaped | 2. | Straight line |
| 3. | J shaped | 4. | Hyperbola |
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 |
The Verhulst – Pearl equation represents what type of population growth?
| 1. | Exponential | 2. | Logistic |
| 3. | Decline | 4. | Stable |
In the logistic growth equation given below, the carrying capacity is represented by:
\(\frac{\mathrm{dN}}{\mathrm{dt}}=\mathrm{rN}\left(\frac{\mathrm{K}-\mathrm{N}}{\mathrm{K}}\right)\)
| 1. | N | 2. | r |
| 3. | K | 4. | K – N / K |
Darwinian fitness is represented by:
| 1. | Low r value | 2. | High r value |
| 3. | High K value | 4. | Low K value |
Which of the following organisms does not breed only once in their life time?
| 1. | Pacific salmon | 2. | Marsupial mice |
| 3. | Birds | 4. | Bamboo |
As a part of their reproductive strategy, pelagic fishes:
| 1. | Produce a large number of small-sized offspring |
| 2. | Produce a small number of small-sized offspring |
| 3. | Produce a large number of large-sized offspring |
| 4. | Produce a small number of large-sized offspring |
A population interaction that is detrimental to both species would be:
| 1. | Mutualism | 2. | Competition |
| 3. | Predation | 4. | Amensalism |
A population interaction where one species is harmed whereas the other is unaffected is called as:
| 1. | Mutualism | 2. | Competition |
| 3. | Predation | 4. | Amensalism |
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