Population Attributes

In the population growth curves shown below, ‘a’ and ‘b’ is representing:

Which branch of ecology deals with the study of changes in population sizes (population dynamics) over a period of time ?

Permanent outward movement of individuals is called

In the graph below, where $\mathrm{N}$ is population size and $\mathrm{t}$ is time, $\mathrm{M}$ represents

Species with high fecundity, high growth rates, and small body sizes are typically

According to the logistic population growth model, the growth rate is independent of

If 4 individuals are died and 8 individuals are born in a laboratory population of 40 fruit flies during time interval of 7 days, calculate the intrinsic rate of natural increase for fruit fly population per week

The density of the population will increase when:

To measure the population density of monarch butterflies occupying a particular park, $100$ butterflies are captured, marked with a small dot on a wing, and then released. The next day, another $100$ butterflies are captured, including the recapture of $20$ marked butterflies. One would correctly estimate the population to be

If most individuals in a population are young then why is the population likely to grow rapidly in the future$?$

Which of the following statements is correct?
a) The number of organisms can increase but never decrease once a population reaches its carrying capacity.
b) All population experience exponential growth once they reach carrying capacity.
c) A population always grows rapidly once it reaches its carrying capacity.
d) Limiting factors can influence the number of organisms in a population once it reaches its carrying capacity.

In a pond, there were $30$ lotus plants in last year. Through reproduction, $25$ new lotus plants were added by reproduction in one year while $8$ plants died. The birth and death rate for the lotus population respectively are ..... and ....... individuals per lotus per year.

If $4$ individuals have died and $8$ individuals are born in a laboratory population of $40$ fruit flies during a time interval of $7$ days, calculate the intrinsic rate of natural increase for fruit fly population per week.

Which of the following statement is true for an urn-shaped pyramid?

The scientist who proposed the theory of human population is

What does $\left(\frac{K-N}{K}\right)$ represent, in the formula $\frac{dN}{dt}=rN\left(\frac{K-N}{K}\right)$?

Present day human population growth curve is