MCQOPTIONS
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MCQOPTIONS
This section includes 286 Mcqs, each offering curated multiple-choice questions to sharpen your Biology knowledge and support exam preparation. Choose a topic below to get started.
| 101. |
The best source of Vitamin C among the following : |
| A. | Lycopersicum esculentum |
| B. | Cirus medica |
| C. | Capsicum annum |
| D. | Phyllanthus emblica |
| Answer» E. | |
| 102. |
Approximately what proportion of the global land surface is used for agriculture and grazing by the world's 6 billion people ? |
| A. | Three quarters |
| B. | One tenth |
| C. | One third |
| D. | One eightieth |
| Answer» D. One eightieth | |
| 103. |
How many million hectares of forest are destroyed each year around the world ? |
| A. | Approximately 10 million |
| B. | Approximately 13 million |
| C. | Approximately 15 million |
| D. | None of these |
| Answer» C. Approximately 15 million | |
| 104. |
What is not an advantage to the Aswan Dam ? |
| A. | Increased prevalence of schistosomiasis |
| B. | Increased hydroelectric power |
| C. | Increased area of agricultural land |
| D. | Increased number of crops per year |
| Answer» B. Increased hydroelectric power | |
| 105. |
What is not an indirect service of the world's ecosystems ? |
| A. | Atmospheric gas regulation |
| B. | Nutrient cycling |
| C. | Waste treatment |
| D. | Water supply |
| Answer» E. | |
| 106. |
Which creature is featured on the logo for International Year of Biodiversity 2010 ? |
| A. | A greater flamingo |
| B. | A bison |
| C. | A whale |
| D. | None of these |
| Answer» B. A bison | |
| 107. |
Which of the following is considered a not-spot of biodiversity in India ? |
| A. | Aravali hills |
| B. | Western Ghats |
| C. | Indo-gangetic Plain |
| D. | Eastern Ghats |
| Answer» C. Indo-gangetic Plain | |
| 108. |
Atomospheric ozone layer which protect us from UV-B & C is getting depleted most by addition of |
| A. | Chloro flurocarbon |
| B. | Carbon monoxide |
| C. | Carbon dioxide |
| D. | Sulphur dioxide |
| Answer» B. Carbon monoxide | |
| 109. |
Following is the most widely discussed impact of climate change |
| A. | Increase in average sea level |
| B. | Deforestation |
| C. | Soil erosion |
| D. | None of the above |
| Answer» B. Deforestation | |
| 110. |
Which hypothesis, concerning diversity on Earth, states that biodiversity and ecosystem function are not linked ? |
| A. | Redundancy hypothesis |
| B. | Rivet hypothesis |
| C. | Diversity - stability hypothesis |
| D. | Idiosyncratic hypothesis |
| Answer» E. | |
| 111. |
At what level does the Natura 2000 network operate ? |
| A. | Golbal |
| B. | Eutopean |
| C. | French |
| D. | None of these |
| Answer» C. French | |
| 112. |
When did the last female alpine ibex disappear in France ? |
| A. | 1980 |
| B. | 2000 |
| C. | 2010 |
| D. | None of these |
| Answer» C. 2010 | |
| 113. |
This species of bird native to North America Was considered to have been one of the most numerous birds on earth. Intensive shooting and the destruction of the birds' natural breeding ground brought about a sudden fall in their numbers. The last of this species on earth died in a zoo in Circinnati in 1914. Name this bird. |
| A. | The Passenger pigeon |
| B. | The Bald eagle |
| C. | The Egret |
| D. | The Falcon |
| Answer» B. The Bald eagle | |
| 114. |
Genetic diversity in agricultural crops is threatened by |
| A. | Introduction of high yielding varieties |
| B. | Intensive use of fertilizers |
| C. | Extensive intercropping |
| D. | Intensive use of biopesticides |
| Answer» D. Intensive use of biopesticides | |
| 115. |
A poisonous substance is produced in the spores of a fungal mould ('Aspergillus Flavus') that grows naturally on peanuts and grains. If ingested it can damage the immune system, cause liver cancer and is also mutagenic inducing chromosomal damage in a wide range of animal. Name this toxin. |
| A. | Betulinum toxin |
| B. | Aflatoxin |
| C. | Dioxin |
| D. | All of the above |
| Answer» C. Dioxin | |
| 116. |
In India, Tropical rain forest occurs in |
| A. | Jammu and Kashmir |
| B. | Andaman & Nicobar |
| C. | Uttar Pradesh |
| D. | Himachal Pradesh |
| Answer» C. Uttar Pradesh | |
| 117. |
The concept of 'carbon credit' originated from which one of the following |
| A. | Kyoto Protocol |
| B. | Earth Summit |
| C. | Montreal Protocol |
| D. | G-8 Summit |
| Answer» B. Earth Summit | |
| 118. |
Which one among the following industries produces the most non-biodegradable wastes ? |
| A. | Thermal power plants |
| B. | Food processing units |
| C. | Textile mills |
| D. | Paper mills |
| Answer» B. Food processing units | |
| 119. |
An endangered animal, the Elephas maximus is now predominantly found in the protected wildlife sanctuaries and national parks of Kerala, Karnataka, and Orissa, Its common name is |
| A. | Black buck |
| B. | Asian elephant |
| C. | Wild buffalo |
| D. | None these |
| Answer» C. Wild buffalo | |
| 120. |
Which is not a theory of environmental ethics ? |
| A. | Anthropocentricism |
| B. | Biocnetricism |
| C. | Ethnocentricism |
| D. | Ecocentricism |
| Answer» C. Ethnocentricism | |
| 121. |
Which year has been named International year of Biodiversity by the United Nations ? |
| A. | 2005 |
| B. | 2008 |
| C. | 2010 |
| D. | None of these |
| Answer» D. None of these | |
| 122. |
The natural environment refers to |
| A. | tha atmosphere in a forest |
| B. | The living organisms and non living object or factors in an area undisturbed by human activity |
| C. | the plant & animal in the forest |
| D. | The atmosphere of an area-a forest, lake or an ocean |
| Answer» C. the plant & animal in the forest | |
| 123. |
The ...........of a species decribes the tropic function it fills in its environment. |
| A. | Niche |
| B. | Habitat |
| C. | Carrying capacity |
| D. | Biotic potential |
| Answer» B. Habitat | |
| 124. |
Under optional conditions, the fruit fly (Drosophilia) is capable of producing a new generation every two weeks. This ability is referred to as the ...........of the species. |
| A. | Carrying capacity |
| B. | Niche |
| C. | Biotic potential |
| D. | Optimal yield |
| Answer» D. Optimal yield | |
| 125. |
Which of the following is not a major greenhouse gas ? |
| A. | Carbon dioxide |
| B. | Methane |
| C. | Calcium Carbonate |
| D. | Water vapour |
| Answer» D. Water vapour | |
| 126. |
The biome concept illustrates |
| A. | Dominant plant communities |
| B. | Insect populations |
| C. | Old field succession |
| D. | Animal diversity |
| Answer» B. Insect populations | |
| 127. |
..................is the least influential in determining the distribution of terrestrial biomes. |
| A. | Light intensity |
| B. | Rainfall |
| C. | Salinity |
| D. | Temperature |
| Answer» D. Temperature | |
| 128. |
Which key person in the promotion of sustainable development and biodiversity issued the following quotation : "the library of life is burning and we don't even know the titles of the books" ? |
| A. | Jacques Chirac |
| B. | Gro Harlem Brundtland |
| C. | Fredrick Reinfeldt |
| D. | None of these |
| Answer» C. Fredrick Reinfeldt | |
| 129. |
When a seed begins to grow ans develop |
| A. | Transpriation |
| B. | Germs |
| C. | Germination |
| D. | Evaporation |
| Answer» D. Evaporation | |
| 130. |
The interrelated food chains in an ecological community |
| A. | Food Web |
| B. | Food Rope |
| C. | Food Chain |
| D. | Food Necklace |
| Answer» B. Food Rope | |
| 131. |
Quinine is obtained from |
| A. | Bark of Cinchona |
| B. | Root of Cinchona |
| C. | Wood of Cinchona |
| D. | Leaves of Cinchona |
| Answer» B. Root of Cinchona | |
| 132. |
Due to advances in mechanization and the development of new strains of crops, food production - and consequently human population - has increased rapidly since the early 1800's. This sudden increase in food productivity has been referred to as the |
| A. | Genetic revolution |
| B. | Biotechnological revolution |
| C. | White revolution |
| D. | Green revolution |
| Answer» E. | |
| 133. |
Which element is depleted most from the soil after a crop is harvested ? |
| A. | Nitrogen |
| B. | Potassium |
| C. | Phosphate |
| D. | Floride |
| Answer» C. Phosphate | |
| 134. |
What is the name of the French plan designed to bring about a 50% reduction in the use of pesticides within 10 years ? |
| A. | The "Eco-phyto" plan |
| B. | The "Pure eau" plan |
| C. | The "Eco l'eau" Plan |
| D. | None of these |
| Answer» B. The "Pure eau" plan | |
| 135. |
Which of the following is a primary consumer ? |
| A. | Cow |
| B. | Dog |
| C. | Hawk |
| D. | Bear |
| Answer» B. Dog | |
| 136. |
"Green house effect" with respect to global warming refers to |
| A. | Cooling & moist condition |
| B. | Warming effect |
| C. | Increased rainfall & greenery |
| D. | Desertification |
| Answer» C. Increased rainfall & greenery | |
| 137. |
The green color of plants is produced from organelles called |
| A. | Chloroplasts |
| B. | Vacuoles |
| C. | Cell membranes |
| D. | Cytoplasm |
| Answer» B. Vacuoles | |
| 138. |
Consumers in an ecosystem serve a 'healthy' role for a species by consuming animals that are either too weak or too........ |
| A. | old |
| B. | fast |
| C. | young |
| D. | hyper |
| Answer» B. fast | |
| 139. |
Which one of the following pairs of organisms are exotic species introduced in India ? |
| A. | Lantana Camara, water hyacinth |
| B. | Water hyacinth, Prosopis cinereria |
| C. | Nileperch, ftcus religiosa |
| D. | Ficus religiosa, lantana Canara |
| Answer» B. Water hyacinth, Prosopis cinereria | |
| 140. |
Pollution of big cities can be controlled to large extent by |
| A. | Wide roads and factories away from city |
| B. | Cleanliness drive and proper use of pesticides |
| C. | Proper sewage and proper exit of chemicals from factories |
| D. | All of the above |
| Answer» E. | |
| 141. |
Environmental friendliness of a vehicle could be measured by the amount of pollutants it emits per passenger per kilometre travelled. Rate the environmental friendliness (1=best & 4 = Worst) of the following vehicles as per this criterion : |
| A. | 4 : 3 : 2 : 1 |
| B. | 2 : 3 : 4 : 1 |
| C. | 3 : 2 : 4 : 1 |
| D. | 4 : 2 : 3 : 1 |
| Answer» B. 2 : 3 : 4 : 1 | |
| 142. |
Which of the following species of rhinoceros is said to be the most critically endangered species. |
| A. | Indian one-horned rhinos |
| B. | Javan rhino |
| C. | African black rhino |
| D. | Sumatran rhino |
| Answer» C. African black rhino | |
| 143. |
What is the primary source of food for marine life ? |
| A. | Phytoplankton |
| B. | Zooplankton |
| C. | Sea weed |
| D. | Grass |
| Answer» B. Zooplankton | |
| 144. |
There are various municipal waste disposal methods. One of the following methods solves the problem of leaching to some extent. |
| A. | Open dumps |
| B. | Sanitary landfills |
| C. | Landfills |
| D. | None of the above |
| Answer» C. Landfills | |
| 145. |
Cataract blinds at least 120 million people globally every year. What is its main cause ? |
| A. | Heredity |
| B. | Ultraviolet radiation |
| C. | Unbalanced diet |
| D. | Gasoline fumes |
| Answer» C. Unbalanced diet | |
| 146. |
What is the main cause for the extinction of some species in tropical forest ? |
| A. | Deforestation |
| B. | Afforestation |
| C. | Pollution |
| D. | Soil erosion |
| Answer» B. Afforestation | |
| 147. |
In India, we find mangoes with different flavours, colours, fibre-content, sugar content and even shelf-life. The large variation is an account of |
| A. | Species diversity |
| B. | Induced mutations |
| C. | Genetic diversity |
| D. | Hybridization |
| Answer» D. Hybridization | |
| 148. |
The following pollutant is not contained in the vehicular exhaust emissions |
| A. | Lead |
| B. | Ammonia |
| C. | Carbon monoxide |
| D. | Particulate matter |
| Answer» C. Carbon monoxide | |
| 149. |
A series of organisms interrelated in their feeding habits, the smallest being fed upon by a larger one. |
| A. | Food Rope |
| B. | Food web |
| C. | Food Chain |
| D. | Food Necklace |
| Answer» D. Food Necklace | |
| 150. |
The process in which plants make their food |
| A. | Photo of me |
| B. | Photocholor |
| C. | Photography |
| D. | Photosynthesis |
| Answer» E. | |