Botany Multiple Choice Questions and Answers

51. Main function of biofertilizer is

1. To increase chemical process
2. To increase physiological process
3. To increase biological process
4. To increase photosynthesis process

52. Main function of biofertilizer is

1. To increase chemical process
2. To increase physiological process
3. To increase biological process
4. To increase photosynthesis process

53. Major aerosol pollutant in Jet Plane emission is

1. SO2
2. CO
3. CH4
4. CFC.

54. Minamata disease is due to pollutant

1. Lead
2. Mercury
3. Hydrogen Sulphide
4. Sulphur dioxide

55. Most abundant water pollutant is

1. Detergents
2. Pesticides
3. Industrial wastes
4. Ammonia.

56. Mycorrhizae is associated with the following

1. Formation of root nodules
2. Hyphae penetrating the soil
3. Found mostly in lower plants
4. Soil erosion

57. Noise Pollution is measured in

1. Hertz
2. Fathoms
3. Manometers
4. Decibels.

58. Onion and garlic are examples of

1. Rhizome
2. corm
3. stem tuber
4. bulb

59. Ozone day is observed on

1. 25th December
2. 16th September
3. 21st April
4. 30th January.

60. Ozone hole causes

1. Global warming
2. Reduction in the rate of photosynthesis
3. More UV rays come to earth
4. All the above.