Most important factor which determined increase in human population in India during 20^{text {th }}

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11.Organisms and Populations

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The most important factor which determined the increase in human population in India during the $20^{\text {th }}$ century.

Natality

Mortality

Immigration

Emigration

Solution

Populations means a group or assemblage of organisms of the same species live at a given time in a given time in a particular area. Population growth can be determined by the number of individuals added to the population. The addition of individuals may take place through natality (by birth) or through immigration $(i.e.,$ entry of individual from outside$)$. The human population of India increased in $20^{\text {th }}$ century by natality.

Standard 12

Biology

The following graph depicts changes in two populations $(A$ and $B)$ of herbivores in a grassy field. $A$ possible reason for these changes is that

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(NEET-2015)

$I.$ Population evolve to maximise their reproductive fitness, also called Darwinian reproductive fitness (higher $r$ value), in the habitat in which they live

$II.$ The population growth rate $r$ is inversely related to generation time

$III.$ The housefly, which has a short life span and produces a large number of eggs, could be considered as a ' $K$ ' selected species

$IV.$ Under a particular set of selection pressures, organisms evolve towards the most efficient reproductive strategies

$V.$ Life history traits of organisms have evolved in relation to the constraints imposed by biotic and abiotic factors in their habitat Select the combination of correct statements

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High growth at the time of exponential phase of human population growth curve is due to

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Number of death and birth in the last stage of plateau growth curve of a population will be

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Biotic potential is

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The most important factor which determined the increase in human population in India during the $20^{\text {th }}$ century.

Solution

Similar Questions

The following graph depicts changes in two populations $(A$ and $B)$ of herbivores in a grassy field. $A$ possible reason for these changes is that

High growth at the time of exponential phase of human population growth curve is due to

Number of death and birth in the last stage of plateau growth curve of a population will be

Biotic potential is

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