1. Association in which one is benefited without affecting the other is

2. Plants and animals living in a particular area constitute

3. In a population rate of addition of new members is higher than the rate of individuals lost. It shows

4. A population with equal number of births and deaths will show

5. Proportion of young individuals is highest in case of

6. Abundance of a species population within its habitat is

7. Peak concentration of ozone occurs in the atmosphere above a height of

8. Biosphere is made of

9. What is best pH of soil for cultivation

10. Amount of water a soil can hold against pull of gravity is called

11. An area of soil thoroughly wetted and allowed to drain till percolation stops will have a water content called

12. Least porous soil is

13. Soil transported by air is

14. Viviparity and pneumatophores are features of

15. Niche of a species is

16. Shallow lakes with abundant organic matter are

17. Upper part of Sea/aquatic ecosystem contains.

18. In submerged hydrophytes the stomata occur

19. Stem of submerged hydrophytes is soft and weak because of

20. Ephemerals are a type of xerophytes

21. Ecology is study of relationships of

22. The term of ecology was actually coined by

23. Ecology(=ockologie) was coined by

24. Ecology is connected with the study of

25. Study of inter-relationships between a species/individual and its environment in all stages of its lifecycle is

26. Clay particles are

27. Plants growing in saline soil/high concentration of salts are

28. Ozone layer is found in

29. Which gas of the atmosphere holds up ultravoilet rays

30. The sphere of living matter found on the surface of earth comprises

31. Edaphology is connected with

32. Soil water available to roots is

33. Humus is important for plant growth as it is

34. Soil best suited for plant growth is

35. Which is amphibious?

36. Mangrove of marshy Sunderbans is characterised by

37. Type of plants having adaptations to check transpiration is

38. Submerged hydrophytes exchange gases through

39. The factor related to structure of earth surface is

40. A plant devoid of roots is

41. Submerged hydrophytes have a well developed

42. Succulents occur in

43. Individuals of a species which occur in a particular area constitute

44. Study of inter-relationships between organisms and their environment is

45. Peeling of ozone umbrella is due to

46. Most hazardous metal pollutant of automobile exhaust is

47. Carbon monoxide, emitted by automobiles, prevents transport of oxygen in body due to

48. Cadmium pollution is associated with disease

49. Major source of Methane in India is

50. MIC and Chernobyl tragedies occured at