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Ecology & Env-3

Welcome to your Ecology & Env-3

1. 
Reservoir in gaseous cycle is mainly

2. 
Phosphate solubilising bacteria help by

3. 
Pioneer species on rocks are

4. 
Which is a sedimentary cycle?

5. 
Secondary succession differs from primary because

6. 
Primary succession on lava is slow due to

7. 
Which is not a seral stage?

8. 
In climax stage, species diversity is

9. 
Which cycle lacks atmospheric phase?

10. 
Which ecosystem has fastest succession?

11. 
Xerarch succession leads finally to

12. 
Which factor slows primary succession most?

13. 
Which organism initiates soil formation?

14. 
Which ecosystem service has highest economic value?

15. 
In climax, energy flow is

16. 
Phosphorus enters plants via

17. 
Which ecosystem shows least nutrient loss?

18. 
First stage of primary succession in water is

19. 
Marsh meadow follows

20. 
Carbon enters biotic phase mainly through

21. 
Decomposition rate is highest in

22. 
Which component increases during succession?

23. 
Lichens are association of

24. 
Reed-swamp stage is dominated by

25. 
Which process links succession and evolution?

26. 
In xerarch succession, first plants are

27. 
Hydrarch succession begins in which condition?

28. 
Which feature best distinguishes climax community from seral stages?

29. 
Carbon cycle disruption mainly due to

30. 
Nitrogen cycle reservoir includes

31. 
Which parameter declines in climax?

32. 
Which stage has maximum net primary productivity?

33. 
Which stage shows highest competition?

34. 
71% of global carbon is stored in

35. 
In secondary succession, pioneer plants are

36. 
Which animal group changes most with vegetation change?

37. 
Primary succession time scale is

38. 
Which increases from pioneer to climax?

39. 
Climax forest persists because of

40. 
Nutrient cycling is also called

41. 
Standing state refers to

42. 
Decomposers increase during succession because of

43. 
Ecosystem services include

44. 
Succession direction is generally

45. 
Correct order of hydrarch succession is

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