Type I

Q. The usual shape of growth curve is

1. linear
2. inverted bell-shaped
3. sigmoidal
4. zig-zag

Q. The following graph shows the range of variation among members of a population for a trait determined by multiple genes.

If this population is subject to stabilizing selection for several generations, which of the distributions is most likely to result?

1. 
2. 
3. 
4. 

Q.

The logistic population growth is expressed by the equation:

1. 

2. 

3. 

4. 

Q. A population in which most of the organisms survive well past the midpoint and die near the very end of the life span have a _____ survivorship curve.

1. A
2. B
3. C
4. D

Q. The population of an insect species shows an explosive increase in numbers during rainy season followed by its disappearance at the end of the season. What does this show?

1. S shaped or sigmoid growth of this insect
2. The food plants mature and die at the end of rainy season
3. Its population growth curve is of J type
4. The population of its predators increases enormously

Q. What is Sigmoid growth curve?

Q. Explain briefly the relationship between poverty and population and how one affects the other.

Q. The population growth is generally described by the following equation:
$\frac{dN}{dt}=rN\frac{(}{K-N}K)$
What does'r' represent in the given equation ___________________.

1. Population density at time 't'
2. Intrinsic rate of natural increase
3. Carrying capacity
4. The base of natural logarithm

Q. A population with a larger proportion of older individuals than younger ones will likely to

1. grow larger and then decline
2. continue to grow larger indefinitely
3. decline
4. not experience a change in population size.

Q. Population of an insect species increases explosively during rainy season. It disappears at the end of the season due to

1. Death of food plants at the end of rainy season
2. J-shaped growth curve.
3. Increase in predator population
4. S-shaped growth curve.

Q. Which of the following equations correctly represents Verhulast Pearl logistic growth?

1. $dN/dt=rN\frac{(}{K-N}K)$
2. $dN/dt=\frac{rN}{K}$
3. $dN/dt=N(K-N)K$
4. $dN/dt=\frac{r(k-n)}{k}$

Q.

1. Exponential

2. Logistic

3. Stationary

4. Not related to population

Q. Assertion :Predators not only take the old, sick and young individuals but also the healthy individuals. Reason: If predators killed only the old, sick and young prey individual, then there would be no evolution of antipredatory traits in the prey population.

1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
3. Assertion is correct but Reason is incorrect
4. Both Assertion and Reason are incorrect

Q. Carrying capacity is

1. The capacity of an individual to produce young ones.
2. Availability of resources in a given habitat to support a certain number of individuals of population, beyond which no further growth is possible.
3. Gene frequency from one generation to next.
4. Gene frequency in same generation.

Q. Study the population growth curves (A and B) in the given graph and select the incorrect option

1. Curve 'A' shows exponential growth, represented by equation $\frac{dN}{dr}=rN$
2. Curve 'B' shows logistic growth, represented by equation
   $\frac{dN}{dr}=rN\left(\frac{K-N}{K}\right)$
3. Exponential growth curve is considered as more realistic than the logistic growth curve
4. Curve 'A' can also be represented by equation $N_t=N_0{e}^{r}t$

Q. When a person dies in old age after completing the life span, then, the survivorship curve for that person is:-

1. J -shape
2. Concave
3. S-shaped
4. Convex

Q. An example of type III curve is

1. Most redwood seeds are eaten, but a few produce trees that live for decades
2. The growth of a bamboo stand slows as space becomes limited
3. The probability of a squid being captured and eaten is independent of its age
4. The growth of a bacterial colony increases as new individuals are produced
5. A few pandas are born in a population, but they survive through adulthood