| 31. | What is the cycling of elements in the ecosystem called? |
A. chemical cycle | |
B. biogeochemical cycle | |
C. geological cycle | |
D. geochemical cycle |
| 32. | Chipko movement was basically against whom? |
A. of water pollution | |
B. of noise pollution | |
C. Forest harvesting | |
D. of cultural pollution |
| 33. | Ecomark’ is given to those Indian products which – |
A. be pure and unadulterated | |
B. be economically viable | |
C. be friendly to the environment | |
D. be protein rich |
| 34. | Due to the increasing abundance of greenhouse gases in the atmosphere, the following have been affected, except – |
A. global warming | |
B. Ozone layer and depletion in the stratosphere | |
C. oxygen fertilization effect | |
D. carbon dioxide |
| 35. | Ozone affects human health by causing severe pulmonary disease at such concentration – |
A. 0.2 ppm | |
B. 0.3 ppm | |
C. 3.0 ppm | |
D. 9.0 ppm |
| 36. | The world’s fastest growing water plant is – |
A. water chestnuts | |
B. amazon jalnalini | |
C. water hyacinth | |
D. utricularia |
| 37. | Which of the following activities disturbs the ecological balance? |
A. chopping wood | |
B. social forestry | |
C. Forest Festival | |
D. afforestation |
| 38. | If all the plants in the world die, then all the animals will also die due to lack of – |
A. sheltered place | |
B. cold air | |
C. Meal | |
D. oxygen |
| 39. | When plant diversity is conserved in its natural habitat, this conservation is called – |
A. spaceless | |
B. Self-locations | |
C. In Vivo | |
D. Characters (In Vitro) |
| 40. | The most dangerous effect of excessive deforestation is – |
A. Destruction of the habitats of wild animals | |
B. soil erosion | |
C. damage to forest property | |
D. Loss of many valuable plants |