McqMate
These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Uncategorized topics , Union Public Service Commission (UPSC) .
| 51. |
Ultraviolet radiation which is not lethal but harm to the organism is |
| A. | 0.1 to 0.28 µm |
| B. | 0.28-0.32 µm |
| C. | 0.32-0.4 µm |
| D. | 0.4-0.5 µm |
| Answer» B. 0.28-0.32 µm | |
| 52. |
Ecological niche of an organism represents |
| A. | The resource it utilizes |
| B. | Functional role in the ecological system |
| C. | The range of conditions that it can tolerate |
| D. | all of these |
| Answer» D. all of these | |
| 53. |
Respiratory roots are known as |
| A. | velamen |
| B. | pneumatophores |
| C. | hydathodes |
| D. | prop roots |
| Answer» B. pneumatophores | |
| 54. |
The gradual physiological adjustment to slowly changing new environmental conditions is known as |
| A. | Selection |
| B. | Introduction |
| C. | Acclimatization |
| D. | Quarantine |
| Answer» C. Acclimatization | |
| 55. |
Upper layer of water in a single body of water is known as |
| A. | Hypolimnion |
| B. | Epilimnion |
| C. | thermocline |
| D. | Hydroline |
| Answer» B. Epilimnion | |
| 56. |
The lower limit of water availability is soil is known as |
| A. | field capacity |
| B. | Hypolimnion |
| C. | thermocline |
| D. | wilting point |
| Answer» D. wilting point | |
| 57. |
MAB program stands for |
| A. | Man and biotechnology |
| B. | Material and biology |
| C. | Man and Biology |
| D. | Man and Biosphere |
| Answer» D. Man and Biosphere | |
| 58. |
Red data book contains data of |
| A. | all plant species |
| B. | all animal species |
| C. | economically important species |
| D. | threatened species |
| Answer» D. threatened species | |
| 59. |
IUCN (The International Union For Conservation Of Nature And Natural Resources) headquarters is at |
| A. | Morges, Switzerland |
| B. | Paris, France |
| C. | Vienna, Austria |
| D. | NewYork, USA |
| Answer» A. Morges, Switzerland | |
| 60. |
IUCN is also called as |
| A. | Man and Biosphere program |
| B. | World Conservation Union |
| C. | World Conservation Consortium |
| D. | World Wide Conservation Union |
| Answer» B. World Conservation Union | |
| 61. |
Which of the following region has maximum diversity |
| A. | mangrooves |
| B. | temperate rainforest |
| C. | taiga |
| D. | coral reefs |
| Answer» D. coral reefs | |
| 62. |
Approximately, 50% of total world species are present on |
| A. | tropical rain forest |
| B. | temperate rain forest |
| C. | temperate deciduous forest |
| D. | coral reefs |
| Answer» A. tropical rain forest | |
| 63. |
Biodiversity |
| A. | increases towards the equator |
| B. | decreases towards the equator |
| C. | remains same throughout the planet |
| D. | has no effect on change in latitude |
| Answer» A. increases towards the equator | |
| 64. |
The most important reason for decrease in biodiversity is |
| A. | habitat pollution |
| B. | introduction of exotic species |
| C. | over-exploitation |
| D. | habitat destruction |
| Answer» D. habitat destruction | |
| 65. |
Dodo is |
| A. | endangered |
| B. | critically endangered |
| C. | rare |
| D. | extinct |
| Answer» D. extinct | |
| 66. |
Blue whale is placed under |
| A. | endangered |
| B. | critically endangered |
| C. | rare |
| D. | extinct |
| Answer» A. endangered | |
| 67. |
Conservation within the natural habitat is |
| A. | insitu conservation |
| B. | exsitu conservation |
| C. | invivo conservation |
| D. | exvivo conservation |
| Answer» A. insitu conservation | |
| 68. |
All are insitu conservation efforts except |
| A. | National parks |
| B. | Sanctuaries |
| C. | Zoo |
| D. | biosphere reserves |
| Answer» C. Zoo | |
| 69. |
Ex situ conservation includes |
| A. | Zoo |
| B. | Botanic garden |
| C. | Germplasm bank |
| D. | all of the above |
| Answer» D. all of the above | |
| 70. |
Hot spots are regions of high |
| A. | rarity |
| B. | endemism |
| C. | critically endangered population |
| D. | diversity |
| Answer» B. endemism | |
| 71. |
Endemic species are |
| A. | rare species |
| B. | species localised in a specific region |
| C. | cosmopolitan in distribution |
| D. | critically endangered species |
| Answer» B. species localised in a specific region | |
| 72. |
What is the animal symbol of W. W. F (World Wildlife Fund) ? |
| A. | Red Panda |
| B. | Giant Panda |
| C. | Tiger |
| D. | Kangaroo |
| Answer» B. Giant Panda | |
| 73. |
The most important human activity, leading to the extinction of wildlife, is |
| A. | Pollution of wildlife, is |
| B. | Hunting for valuable wildlife products |
| C. | Introduction of alien species |
| D. | Alternation and destruction of the natural habitats |
| Answer» D. Alternation and destruction of the natural habitats | |
| 74. |
If we uncover half of the forest, covering of the earth, what crisis will be produced at most and at first? |
| A. | Some species will be extincted |
| B. | Population and ecological imbalance will rise up |
| C. | Energy crisis will occur |
| D. | Rest half forests will maintain this imbalance |
| Answer» A. Some species will be extincted | |
| 75. |
When is the World Wildlife week ? |
| A. | First week of September |
| B. | Last week of September |
| C. | First week of October |
| D. | Last week of October |
| Answer» C. First week of October | |
| 76. |
Red Data Book Provides data on |
| A. | Red flowered plants |
| B. | Red colored fishes |
| C. | Lists of plants and animals |
| D. | Endangered plants and animals |
| Answer» D. Endangered plants and animals | |
| 77. |
Wild life is continuously decreasing. What is the main reason of this? |
| A. | Predation |
| B. | Cutting down of forest |
| C. | Destruction of habitat |
| D. | Hunting |
| Answer» C. Destruction of habitat | |
| 78. |
What is the major cause of diminishing wildlife number? |
| A. | Felling of trees |
| B. | Cannibalism |
| C. | Habitat destruction |
| D. | Paucity of drinking water |
| Answer» C. Habitat destruction | |
| 79. |
Viable material of endangered species can be preserved by |
| A. | Gene bank |
| B. | Gene library |
| C. | Gene pool |
| D. | Herbarium |
| Answer» A. Gene bank | |
| 80. |
Which group of vertebrates comprises the highest number of endangered species? |
| A. | Mammals |
| B. | Fishes |
| C. | Birds |
| D. | Reptiles |
| Answer» A. Mammals | |
| 81. |
Which of the following is mainly responsible for the extinction of wild life |
| A. | Pollution of air and water |
| B. | Hunting of flesh |
| C. | Destruction of Habitats |
| D. | All of these |
| Answer» D. All of these | |
| 82. |
The unfavourable alteration of environment due to human activities is termed as |
| A. | ecological disturbance |
| B. | catastrophe |
| C. | ecological degradation |
| D. | pollution |
| Answer» D. pollution | |
| 83. |
Which of the following is the best indicator of SO2 pollution |
| A. | bryophyte |
| B. | pteridophyte |
| C. | Lichen |
| D. | algae |
| Answer» C. Lichen | |
| 84. |
Heavy dust can cause |
| A. | leaf blights |
| B. | opening of stomata |
| C. | closure of stomata |
| D. | browning of leaves |
| Answer» C. closure of stomata | |
| 85. |
Which of the following is the major cause of pollution |
| A. | plants |
| B. | man |
| C. | fungi |
| D. | hydrocarbon gases |
| Answer» D. hydrocarbon gases | |
| 86. |
Minamata disease was caused by pollution of water by |
| A. | mercury |
| B. | lead |
| C. | tin |
| D. | methyl iso cyanate |
| Answer» A. mercury | |
| 87. |
BOD stands for |
| A. | biotic oxidation demand |
| B. | biological oxidation demand |
| C. | biological oxygen demand |
| D. | biochemical oxygen demand |
| Answer» C. biological oxygen demand | |
| 88. |
A river with high BOD value is |
| A. | highly polluted |
| B. | highly clean |
| C. | highly productive |
| D. | none of these |
| Answer» A. highly polluted | |
| 89. |
5th June is observed as |
| A. | world forest day |
| B. | world environment day |
| C. | world wildlife day |
| D. | world population day |
| Answer» B. world environment day | |
| 90. |
Cement factory labourers are prone to |
| A. | leukemia |
| B. | bone marrow disease |
| C. | asbestosis |
| D. | cytosilicosis |
| Answer» D. cytosilicosis | |
| 91. |
Noise is measured using sound meter and the unit is |
| A. | hertz |
| B. | decibel |
| C. | joule |
| D. | sound |
| Answer» B. decibel | |
| 92. |
The undesirable change in physical, chemical or biological characteristics of air, land and water is referred as |
| A. | pollutants |
| B. | ecodestructions |
| C. | pollution |
| D. | all of these |
| Answer» C. pollution | |
| 93. |
Which of the radioactive material is largely associated with bone cancer |
| A. | radium-226 |
| B. | thorium-232 |
| C. | Strontium-90 |
| D. | iodine |
| Answer» C. Strontium-90 | |
| 94. |
Lead poisoning |
| A. | reduces O2 carrying capacity of haemoglobin in blood |
| B. | increases O2 carrying capacity of haemoglobin in blood |
| C. | reduces O2 carrying capacity of myoglobin in muscles |
| D. | increases O2 carrying capacity of myoglobin in muscles |
| Answer» A. reduces O2 carrying capacity of haemoglobin in blood | |
| 95. |
Acid rain contains |
| A. | sulphuric acid |
| B. | nitric acid |
| C. | both a and b |
| D. | sulphuric acid, nitric acid and hydrochloric acid |
| Answer» C. both a and b | |
| 96. |
The occurrence of pesticides like DDT in higher trophic levels is termed as |
| A. | bioremediation |
| B. | biomagnification |
| C. | biological enhancement |
| D. | biopollution |
| Answer» B. biomagnification | |
| 97. |
Earth summit was held in |
| A. | Stockholm in 1972 |
| B. | Rio de Jeneiro in 1992 |
| C. | Paris in 1992 |
| D. | New York in 1972 |
| Answer» B. Rio de Jeneiro in 1992 | |
| 98. |
All are physical pollutants except |
| A. | heat |
| B. | sound |
| C. | radiations |
| D. | soot |
| Answer» D. soot | |
| 99. |
All are primary pollutants except |
| A. | Ammonia |
| B. | Peroxy Acyl Nitrate (PAN) |
| C. | sulphur dioxide |
| D. | hydrogen sulphide |
| Answer» B. Peroxy Acyl Nitrate (PAN) | |
| 100. |
Pollutants that are introduced into the environment by human activity are called as |
| A. | qualitative pollutants |
| B. | quantitative pollutants |
| C. | anthropogenic pollutants |
| D. | all of these |
| Answer» A. qualitative pollutants | |
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