Previous Year Papers

Download Solved Question Papers Free for Offline Practice and view Solutions Online.

Test Series

Take Zigya Full and Sectional Test Series. Time it out for real assessment and get your results instantly.

Practice and master your preparation for a specific topic or chapter. Check you scores at the end of the test.

31. How will you calculate net primary productivity ?

165 Views

32. Name the commonly studied ecological pyramids.

133 Views

33. Name the two types of nutrient cycles?

151 Views

34. Which ecological pyramid is always upright ?

148 Views

35.

The entire sequence of communities that successively change in a given area are called

162 Views

36. The other name for nutrient cycling is

135 Views

37. State what does ‘standing crop’ of a trophic level represent.

339 Views

38. Distinguish between the following :

(a) Grazing food chain and detritus food chain

(b) Production and decomposition

(d) Food chain and food web

(e) Litter and detritus

(f) Primary and secondary productivity.

545 Views

39. Give an account of factors affecting the rate of decomposition.

146 Views

40.

Give a diagrammatic representation of trophic levels in an ecosystem.

249 Views