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Emigration and Immigration....

Emigration and Immigration.

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Doubtnut ke saath jaaniye Word Emigrate and Immigrate mein kya difference hai..!!

If birth rate = B , Death rate = D, Emigration = E, lmmigration = I, then choose the correct match

Knowledge Check

  • The given figure represents different factors affecting population density (N). If B = Natality, D = mortality, E = emigration and I = immigration, then select the incorrect option regrading these.

    A
    B and D are most influential factors under normal conditions while I and E become important in special conditions.
    B
    In a new habitat just being colonized, I becomes more important than B
    C
    B and I cause positive changes in N
    D
    I is generally equal to E

  • The given figure represents different factors affecting population density (N) . If B = natality D = mortality , E = emigration and I = immigration, then select the incorrect option regarding these.

    A
    `B` and `D` are most influential factors under normal conditions while `I` and `E` become important in special conditions
    B
    In a new habitat just being colonised, I become more important than `B`
    C
    `B` and `I` cause positive changes in `N`
    D
    `I` is generaly equal to `E`

  • Assertion (A): The population of North America increased by more than six times in the last one hundred years. Reason (R) : North America had experienced industrialization and immigration. Codes :

    A
    Both A and Rare true and R is the correct explanation of A
    B
    Both Aand Rare true but Ris not a correct explanation of A
    C
    A is true but R is false
    D
    A is false but R is true

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    Which of the following is correct ? I. Migration is the movement of individuals from a population to another population II. Emigration is the migration of individuals out of an area III. Immigration is the migration of individuals into an area IV Gene flow cannot alter the genetic charecteristics of populations

    Which of the following contributes to increase in population density ? (a) Natality (b) Mortality (c) Immigration (d) Emigration

    A biologist studied the population of rats in a barn. He found that the average natality was 250, average mortality 240, immigration 20 and emigration 30. The net increase in population is :

    A biologist studied the population of rats in a barn. He found that the average natality was 250, average mortality 240, immigration 20 and emigration 30. The net increase in population is

    A biologist studied the population of rats in a barn. He found that the average natalty was 250, average mortality 240, immigration 20 and emigration 30. The net increase in populations is:

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