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Which of the following would necessarily...

Which of the following would necessarily decrease the density of a population in a given habitat ?

A

Natality gt mortality

B

Immigration gt emigration

C

Mortality and emigration

D

Natality and immigrat

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The correct Answer is:
C
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AAKASH SERIES-ORGANISMS AND POPULATIONS-EXERCISE-I (POPULATIONS)
  1. A population has more young individuals compared to the older individu...

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  2. What parameters are used for tiger census in our country's national pa...

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  3. Which of the following would necessarily decrease the density of a pop...

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  4. A protozoan reporduces by binary fission. What will be the number of p...

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  5. In 2005, for each of the 14 million people present in a country, 0.028...

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  6. Which one of the following organisms reproduces sexually only once in ...

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  7. The number of new individuals produced in a unit time, per unit popula...

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  8. In a pond there were 400 frogs last year and through reproduction 200 ...

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  9. The status ofa population, whether it is growing, stable, or declining...

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  10. Organisms represented at the top of an age pyramid are

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  11. In an age pyramid, which age group is represented at the bottom ?

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  12. In a growing population of a country.

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  13. Total number of individuals per unit area of unit volume is called

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  14. In a population of 2,500 whose intrinsic rate of natural increase (r) ...

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  15. Choose the incorrect statement.

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  16. The size of a population increases if

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  17. Which of the following factors has a negative effect on the population...

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  18. In a population of a habitat in one year 200 births, 150 deaths, 200 e...

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  19. Exponential growth is observed in a population when

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  20. In a population per capita birth rate is 0.15 and per capita death rat...

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