MCQOPTIONS
Saved Bookmarks
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.
| 201. |
The Ecological pyramid that is always upright |
| A. | Pyramid of energy |
| B. | Pyramid of biomass |
| C. | pyramid of number |
| D. | None of the above |
| Answer» B. Pyramid of biomass | |
| 202. |
India generates about 4,3 million tonnes of hazardous wastes every year. Direct exposure to two chemicals in hazardous waste can cause death. Name them. |
| A. | Mercury and arsenic |
| B. | Cyanide and sulphur |
| C. | Sulphur and arsenic |
| D. | mercury and cyanide |
| Answer» E. | |
| 203. |
Which one among the following groups of items contains only biodegradable items ? |
| A. | Wood, Grass, Plastic |
| B. | Wood, Grass, Leather |
| C. | Fruit peels, Lime juice, China clay cup |
| D. | Lime juice, Grass, Polystyrene cup |
| Answer» C. Fruit peels, Lime juice, China clay cup | |
| 204. |
What does the term "locavore" mean ? |
| A. | A bacteria |
| B. | An endangered species |
| C. | The consumer who eats only locally grown food products |
| D. | None of these |
| Answer» D. None of these | |
| 205. |
Which percentage of the world's population is still dependent upon "home-made" remedies produced from herbs and plants ? |
| A. | 25% |
| B. | 50% |
| C. | 75% |
| D. | None of these |
| Answer» D. None of these | |
| 206. |
The municipal solid waste generated in India is about 40% organic matter. Composting is the best method of disposal of organic solid waste. Where was the country's first aerobic composting plant set up in 1992 ? |
| A. | Delhi |
| B. | Mumbai |
| C. | Calcutta |
| D. | Chennai |
| Answer» C. Calcutta | |
| 207. |
Insectivorous plant generally grow in soil which is deficient in |
| A. | Water |
| B. | Nitrogen |
| C. | Potassium |
| D. | Calcium |
| Answer» C. Potassium | |
| 208. |
A one-way relationship where one species benefits at the expense of another is called ................. |
| A. | Commensalism |
| B. | Competative exclusion |
| C. | Parasitism |
| D. | An obligatory relationship |
| Answer» D. An obligatory relationship | |
| 209. |
A symbiotic relationship in which both species benefit is best described as .............. |
| A. | Commensalism |
| B. | Competative exclusion |
| C. | Mutualism |
| D. | Parasitism |
| Answer» D. Parasitism | |
| 210. |
Consider the following : |
| A. | 1 only |
| B. | 2 and 3 only |
| C. | 1 and 3 only |
| D. | 1, 2 and 3 only |
| Answer» E. | |
| 211. |
Bacteria and fungi act as ..........within an ecosystem. |
| A. | Primary producers |
| B. | Primary consumers |
| C. | Secondary consumers |
| D. | Decomposers |
| Answer» E. | |
| 212. |
A study of a meadow ecosystem revealed the following tropic relationships : |
| A. | Sweet clover |
| B. | Grasshoppers |
| C. | Toads |
| D. | Snakes |
| Answer» B. Grasshoppers | |
| 213. |
Wind erosion is one of the key causes of desertification and occurs when soil is left bare or vegetation. State the major cause of wind erosion in arid and semi-arid lands where this problem is most severe. |
| A. | Cleaning of land for agriculture |
| B. | Deforestation |
| C. | Overgrazing by livestock |
| D. | Forest fires |
| Answer» B. Deforestation | |
| 214. |
Which of the following ecosystem are not managed by human ? |
| A. | Uarban Parks |
| B. | Farms |
| C. | National Parks |
| D. | Plantations |
| Answer» D. Plantations | |
| 215. |
The rich biodiversity of India is under severe threat due to |
| A. | 1, 2, 3, 4 |
| B. | 2, 3, 4 |
| C. | 1, 3, 4 |
| D. | 1, 2, 3 |
| Answer» B. 2, 3, 4 | |
| 216. |
One of the following bird species was thought to be extinct but has been rediscovered in India by the BNHS (Bombay Natural History Society) in 2002. Name the species. |
| A. | Pink-headed Duck |
| B. | Himalayan Mountain Quail |
| C. | Forest Owlet |
| D. | Masked Finfoot |
| Answer» D. Masked Finfoot | |
| 217. |
Project Tiger, a programme to maintain a viable population of tigers in the country and to chalk out areas for their habitat, was launched in the year |
| A. | 1975 |
| B. | 1973 |
| C. | 1974 |
| D. | 1971 |
| Answer» C. 1974 | |
| 218. |
Climate change may have an impact on the following : |
| A. | Agriculture, natural terrestrial ecosystems and water resources |
| B. | Air quality, oceans and coastal zones |
| C. | Energy and human health |
| D. | All of the above |
| Answer» E. | |
| 219. |
Which of the following animal is protected in Kaziranga Sanctuary of Assam ? |
| A. | Indian bison |
| B. | India lion |
| C. | Indian rhinoceros |
| D. | Indian elephant |
| Answer» D. Indian elephant | |
| 220. |
Which is the first state to implement the path-breaking proposal that environment should be included as a separate subject in schools ? |
| A. | Delhi |
| B. | Maharashtra |
| C. | Kerala |
| D. | Tamil Nadu |
| Answer» C. Kerala | |
| 221. |
The CERES Principles are |
| A. | Codes for protection of salmon fisheries. |
| B. | A set of voluntary environmental standards for business. |
| C. | Anti-pollution codes that were adopted at the first Earth Summit in 1992. |
| D. | Designed to eliminate the production of greenhouse gases |
| Answer» C. Anti-pollution codes that were adopted at the first Earth Summit in 1992. | |
| 222. |
All the populations of different species that occupy and are adapted to a given area, are referred to as a(n)................. |
| A. | Ecosystem |
| B. | Community |
| C. | Biosphere |
| D. | Niche |
| Answer» C. Biosphere | |
| 223. |
All of the organisms living in a particular area make up .................... |
| A. | A food chain |
| B. | A population |
| C. | A biological community |
| D. | A biosphere |
| Answer» D. A biosphere | |
| 224. |
An organism's "trophic" level refers to ................ |
| A. | The rate of which it uses energy |
| B. | Where it lives |
| C. | What is eats |
| D. | Whether it is early or late in ecological succession |
| Answer» D. Whether it is early or late in ecological succession | |
| 225. |
A lichen is actually composed of two organisms-a fungus and an algae. They depend on each other for survival. The most specific term that describes their relationship is .................. |
| A. | Parasitism |
| B. | Mutualism |
| C. | Commensalism |
| D. | Symbiosis |
| Answer» C. Commensalism | |
| 226. |
The term used for the conservation of ecosystems and natural habitats and the maintenance and recovery of viable populations of species in their natural surronudings is |
| A. | Core conservation |
| B. | In-situ conservation |
| C. | Ex-situ conservation |
| D. | Peripheral conservation |
| Answer» D. Peripheral conservation | |
| 227. |
Bhopal gas tragedy struck in the year 1984 due to the leakage of the following gas |
| A. | Methyl-iso-cyanate |
| B. | Nitrous oxide |
| C. | Methane |
| D. | Carbon monoxide |
| Answer» B. Nitrous oxide | |
| 228. |
Which one of the following is not included under in-situ conservation ? |
| A. | National park |
| B. | Sanctuary |
| C. | Botanical garden |
| D. | Biosphere reserve |
| Answer» D. Biosphere reserve | |
| 229. |
The greatest threat to organisms and biodiversity in |
| A. | Species extinction all over the world |
| B. | Reduced carrying capacity of the habitat |
| C. | Biodiversity hotspots |
| D. | Process of habitat loss |
| Answer» E. | |
| 230. |
Which of the following is correctly matched pair of an endangered animal and a national park ? |
| A. | Great Indian bustard : Keoladeo National Park |
| B. | Lion : Corbett National Park |
| C. | Rhinoceros : Kaziranga National Park |
| D. | Wild ass : Dudhwa National Park |
| Answer» D. Wild ass : Dudhwa National Park | |
| 231. |
Which of the following animals have a diet mainly consisting of banboo ? |
| A. | Sloth bears |
| B. | Red Pandas |
| C. | Golden langurs |
| D. | Hares and rabbits |
| Answer» C. Golden langurs | |
| 232. |
Name the term commonly used for a technology that renders seeds sterile after the first generation. |
| A. | Terminator Technology |
| B. | Sterile technology |
| C. | Killer Technology |
| D. | None of the above |
| Answer» B. Sterile technology | |
| 233. |
Name the term commonly used, genetically modified cotton plant resistant to the deadly cotton pest 'heliothis'. |
| A. | RR Cotton |
| B. | Bt Cotton |
| C. | Hr Cotton |
| D. | Ht Cotton |
| Answer» C. Hr Cotton | |
| 234. |
The massive hole in the ozone layer over the Antarctica was first discovered in |
| A. | 1976 |
| B. | 1985 |
| C. | 1960 |
| D. | None of these |
| Answer» C. 1960 | |
| 235. |
The state's and citizen's responsibilities for environmental protection is enshrined in the Constitution of India in the following two articles : |
| A. | 38G and 58 A |
| B. | 55B and 51D |
| C. | 48 A and 51 G |
| D. | 59 B and 12D |
| Answer» D. 59 B and 12D | |
| 236. |
India would phase out the production and consumption of the controlled ODS (ozone-depleting substances) within the time frame and limits specified in the |
| A. | Vienna Convention |
| B. | Basel Convention |
| C. | Montreal Protocol |
| D. | Agendra 21 |
| Answer» D. Agendra 21 | |
| 237. |
On this day in 1792, the Stockholm Conference on Human Environment was held in Sweden, Since then the World Environment Day is celebrated on this day. State the date |
| A. | March 8 |
| B. | June 5 |
| C. | May 22 |
| D. | October 8 |
| Answer» C. May 22 | |
| 238. |
What is the term for the maximum number of individuals that an area can support indefinitely ? |
| A. | Biotic potential |
| B. | Carrying capacity |
| C. | Niche |
| D. | Maximum density |
| Answer» C. Niche | |
| 239. |
Which of the following represents the most complex level ? |
| A. | Community |
| B. | Species |
| C. | Ecosystem |
| D. | Population |
| Answer» D. Population | |
| 240. |
The removal of ginseng growing in the Great Smoky Mountain National park is an example of |
| A. | Stealing |
| B. | Theft |
| C. | Plant poaching |
| D. | Plant rusting |
| Answer» D. Plant rusting | |
| 241. |
The specific aim of ecology is to study |
| A. | how to best preserve diversity |
| B. | pollution |
| C. | the distribution patterns of plants and animals on Earth. |
| D. | All of the above are correct |
| Answer» D. All of the above are correct | |
| 242. |
Which sector is the largest emitter of greenhouse gases in India ? |
| A. | Transport |
| B. | Domestic |
| C. | Agricultural |
| D. | Electric power generation |
| Answer» E. | |
| 243. |
CFC (chloro-fluoro-carbons) are greenhouse gases that have caused a rise of 0.3 |
| A. | Carbon dioxide |
| B. | Freon |
| C. | Methane |
| D. | Ammonia |
| Answer» C. Methane | |
| 244. |
Sea turtles are called living fossils for they have been on the earth in their present form for over 150 million years. Of the five species of sea turtles found in the waters of the Indian subcontinent, which is the most populous species ? |
| A. | Keneps Ridley |
| B. | Loggerhead |
| C. | Olive Ridley |
| D. | Flatback |
| Answer» D. Flatback | |
| 245. |
The Giant Panda is the official symbol of the WWF (World Wide Fund for Nature). In which country is this animal found ? |
| A. | China |
| B. | India |
| C. | Myanmar |
| D. | New Zealand |
| Answer» B. India | |
| 246. |
Name the gas released from landfills, decaying organic matter under shallow water in marshes and bogs, flooded paddy fields, by ruminant animals & termites and by the burning of biomass. A molecule of this gas has 21 times more global warming potential than a molecule of Co |
| A. | Sulphur dioxide |
| B. | Methane |
| C. | Ammonia |
| D. | Nitrous Oxide |
| Answer» C. Ammonia | |
| 247. |
By 2100 AD, global temperature is expected to rise by about 2 |
| A. | By expanding ocean water |
| B. | By melting mountain glaciers |
| C. | By causing ice sheets of Antarctica and Greenland to melt and slide into the oceans |
| D. | All of the above |
| Answer» E. | |
| 248. |
The formation of ozone hole in the Antarctic region has been a cause of concern What could be the reason for the formation of this hole ? |
| A. | Presence of prominent tropo-spheric turbulence; and inflow of chlorofluorocarbons |
| B. | Presence of prominent polar front and stratospheric: Clouds; and inflow or chorofluorocarbons |
| C. | Absence of polar front and stratospheric clouds: and inflow of methane and chlorofluorocarbons |
| D. | Increased temperature at polar region due to global warming |
| Answer» C. Absence of polar front and stratospheric clouds: and inflow of methane and chlorofluorocarbons | |
| 249. |
Forests ecosystems that have suffered a tremendens destruction of habit comprise |
| A. | Temperate forests |
| B. | Tropical rain forests |
| C. | Tropical deciduous forests |
| D. | None of these |
| Answer» C. Tropical deciduous forests | |
| 250. |
Which is of the following does not fit into a preservation ehtic attitude towards the environment ? |
| A. | Nature has intrinsic value |
| B. | Continual change and human progress is good in itself |
| C. | A reverence for life and respect for the rights of all creatures |
| D. | Human species depends on, and learn from nature |
| Answer» C. A reverence for life and respect for the rights of all creatures | |