Staff Nurse Entrance
Staff Nurse Entrance
31. Which pigment protects plants from UV damage?
- Chlorophyll
- Xanthophylls
- Phycocyanin
- Carotenoids
32. Which is not dangerous for life?
- Nuclear blast
- Deforestation
- Biopollutants
- Ozone layer
33. Pollution indicator plants
- are resistant to pollution
- can purify the atmosphere
- are very sensitive to pollution
- are very sensitive to pollutants
34. A sewage treatment process in which a portion of the decomposer bacteria present in the waste recycled into the beginning of the process is called
- Activated sludge treatment
- Primary treatment
- Tertiary treatment
- Cyclic treatment
35. Warm ocean surge of Peru Current recurring every 5-8 years or so in the East Pacific of South America is widely known as
- Gulf stream
- Aye Aye
- El Nino
- Mangox
36. Acid rain is caused due to increase in concentration of
- SO2 and NO2
- CO and CO2
- CO and SO3
- Ozone and dust
38. Maximum threat to the world is from
- global warming
- ozone hole
- water pollution
- soil erosion
39. BOD of a pond is related to in per unit volume of water.
- All the plants
- All the nektons
- All the microbes
- All the animals
40. The effect of pollution is first and most marked on
- Natural flora of a place
- Natural balance of our environment
- Natural geochemical cycles
- All the above three