Botany Objective Questions Answers for Practice

76. Artificial methods of vegetative propagation includes

1. Cloning
2. grafting
3. cuttings
4. both b and c

77. Automobile exhaust gas that causes major respiratory problem is

1. CO
2. CH4
3. NO2
4. Chlorine.

78. Banana is propagated by

1. Stem cutting
2. Tillers
3. Suckers
4. Crown

79. Basic taxonomic unit is

1. Kingdom
2. Genus
3. Species
4. Order

80. Binomial nomenclature means writing the name of plant in two words which designate

1. Order and Family
2. Family and genus
3. Species and variety
4. Genus and species

81. Bioherbicides have been recommended

1. To prevent eco-degradation
2. Because of their ready availability
3. Because of their cheap rates
4. Because of their abundance

82. BOD is connected with

1. Organic matter
2. microbes
3. Microbes and Organic matter
4. None of the above.

83. Cadmium damages

1. Heart
2. Lungs
3. Stomach
4. Liver and Kidneys.

84. Carbon monoxide is pollutant as it

1. Inactivates nerves
2. Inhibits glycolysis
3. Combines with oxygen
4. Combines with haemoglobin.

85. Carbon monoxide kills because it destroys

1. Haemoglobin
2. Phytochrome
3. Cytochrome
4. Both a and b.

86. Chief air pollutant which is likely to deplete ozone layer is

1. Sulphur dioxide
2. Carbon dioxide
3. Carbon monoxide
4. Nitrogen oxides and Fluorocarbons.

87. Classical taxonomy is also termed

1. Beta taxonomy
2. Systematic
3. Descriptive taxonomy
4. Experimental taxonomy

88. Coacervates were experimentally produced by

1. Oparin and Haldane
2. Darwin
3. Aristotle
4. Louis Pasture

89. Coacervates were formed by

1. DNA
2. Radiations
3. Polymerization
4. Polymerisation and aggregation

90. Component of smog

1. O3
2. PAN
3. PPN & PAN
4. Both a and b