Q. No.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 |
Identify the incorrectly matched pair:
|
Population interaction |
Species A |
Species B |
|
|
1. |
Mutualism |
+ |
+ |
|
2. |
Predation |
+ |
- |
|
3. |
Parasitism |
- |
- |
|
4. |
Commensalism |
+ |
0 |
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