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Class 12 Biology Practice Test: Ecosystem - Ecological Succession
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Class 12 Biology Practice Test: Ecosystem - Ecological Succession
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20 Questions

1. How many years has succession occurred so that the present-day communities are observed?
2. What phenomenon occurs during an ecological succession?
3. What do the changes in a community that is in near equilibrium with the environment lead to the formation of?
4. What is a biotic succession occurring in the barren area where there once life existed called?
5. Imagine a barren land where once existed a forest. Due to deforestation and fire in that forest, all the species got extinct. A new species came, colonized and expanded in this forest. What kind of succession pattern did this species follow?
6. What is the predictable and gradual change in the species composition of a given area called?
7. How many years has succession occurred so that the present-day communities are observed?
8. How many types do an ecological succession has?
9. Which of the following community develops during the end of the biotic succession?
10. What is a biotic succession occurring in the barren area where there once life existed called?
11. What is the predictable and gradual change in the species composition of a given area called?
12. How many types do an ecological succession has?
13. What is a biotic succession occurring on a previously unoccupied or bare land called?
14. How are seral stages when there is an increase in the number of species, change in the diversity of species and an increase in the total biomass?
15. What is a biotic succession occurring on a previously unoccupied or bare land called?
16. Which factors influence a biotic community?
17. Which of the following is an important characteristic of all communities?
18. How are seral stages when there is an increase in the number of species, change in the diversity of species and an increase in the total biomass?
19. Which of the following is known as the first biotic community to develop on a bare land?
20. What phenomenon occurs during an ecological succession?

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