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Class 12 Biology Practice Test: Organisms and Populations - Population Growth
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Class 12 Biology Practice Test: Organisms and Populations - Population Growth
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25 Questions

1. Which one of the following causes a population explosion?
2. The 100 individuals are born per year in a population, and the mid-year population is 5000. What is the birth rate of that area?
3. Which of the following is responsible for a decrease in population density?
4. Which letter is used to designate the death rate (Mortality)?
5. In the given structure what does the ‘?’ indicate?
The population density the number of individuals in a unit area
6. What does Nt define?
7. The 20 individuals are born per year in a population, and the mid-year population is 5000. What is the birth rate of that area?
8. Which letter is used to designate the emigration?
9. Which of the following formula correctly defines natality?
10. Which of the following process is responsible for fluctuation in population density?
11. Which of the following is responsible for an increase in population density?
12. The 75 individuals are dying per year in a population, and the mid-year population is 7000. What is the death rate of that area?
13. At what year is the census carried?
14. Under special conditions which factor is responsible for influencing population density?
15. The 95 individuals are dying per year in a population, and the mid-year population is 7000. What is the death rate of that area?
16. Under normal conditions which of the following factor is responsible for influencing population density?
17. The 80 individuals are born per year in a population, and the mid-year population is 5000. What is the birth rate of that area?
18. Which of the following process is responsible for fluctuation in population density?
19. Which of the following formula correctly defines growth rate (GR)?
20. Which of the following formula correctly defines mortality?
21. The 10 individuals are born per year in a population, and the mid-year population is 5000. What is the birth rate of that area?
22. If in a population the natality is 20 and mortality is 10, in a span of 10 years. What is the growth rate (GR) of that population?
23. Under special conditions which factor is responsible for influencing population density?
24. Which of the following process is responsible for fluctuation in population density?
25. Which of the following is responsible for an increase in population density?

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