1. Weather refers to

2. Which statement about hydrospheric ecosystem is incorrect?

3. Productivity of an ecosystem is indicated by

4. In which zone plant community is most diverse

5. Which statement about profundal zone is correct?

6. Eutrophication is

7. In polluted lake which organisms dominate the community

8. Evolution of vascular bundles in plants and skeleton in animals is an adaptation for

9. Development of bark in plants and skin in animals is a method for

10. Which statement is incorrect?

11. Temperature of temperate deciduous forests is

12. Coniferous forests located at high altitude are called

13. Grass land in tropic climates with woody trees is called

14. Zone of lake water which is of open water near the surface is

15. Ecosystem of Shogran is

16. Mountains of Koh Hindukush come under

17. Annual rainfall in grass land is

18. One of the most important cause of desertification is

19. Desert ecosystem of Mianwali is

20. In sub-humid tropical grassland productivity is more than

21. Annual rainfall in deserts is less than

22. Treeless tundra of high latitude between taiga and polar ice caps is called

23. The most fragile of all biomes is

24. Yellowish glandular structure which produces progesterone is

25. Yellow cytoplasm in ascidian gives rise to

26. Embryonic induction is caused by part developing from

27. Purines and pyrimidines are in equal ration in DNA. It was indicated by

28. Okazaki fragments are connected together through action of

29. Sickle cell anemia is an example of

30. Test cross is used to find

31. XO-XX pattern of sex determination is present in

32. Sapwood is formed from

33. Number of cervical vertebrae is

34. Joints present in skull are example of

35. Only myosine is present in

36. Which of the following hormone is polypeptide in nature

37. Secretin inhibits production of

38. Highest form of learning is

39. Far-red light promotes flowering in

40. In human female, fertilization commonly occurs at

41. Ozone depletion occurs commonly due to

42. The productivity of aquatic ecosystem is basically determined by light and

43. Ecosystem not found in Pakistan is

44. Annual rainfall in grassland is about

45. Which of the following is most constant abiotic component of ecosystem

46. Conversion of ammonia or ammonium ion into nitrites during nitrogen cycle occurs due to