MCQOPTIONS
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MCQOPTIONS
This section includes 639 Mcqs, each offering curated multiple-choice questions to sharpen your Science knowledge and support exam preparation. Choose a topic below to get started.
| 301. |
What percent of water resources are locked in glacial and ice caps? |
| A. | 0.03 |
| B. | 0.02 |
| C. | 0.01 |
| D. | 0.07 |
| Answer» C. 0.01 | |
| 302. |
In structure of an ecosystem, composition of biological communities include: |
| A. | Rate of production |
| B. | Species population, biomass, distribution |
| C. | Rate of temperature change |
| D. | Light and temperatue |
| Answer» C. Rate of temperature change | |
| 303. |
Humans consume plants and animals therefore they are called |
| A. | Omnivors |
| B. | Herbivores |
| C. | Carnivore |
| D. | Consumers |
| Answer» B. Herbivores | |
| 304. |
Large carnivores which feed on primary carnivores are known as |
| A. | Tertiary Consumers |
| B. | Primary consumers |
| C. | Omnivores |
| D. | Herbivores |
| Answer» B. Primary consumers | |
| 305. |
How many percents of energy transferred from one trophic level to the next higher level? |
| A. | 10% |
| B. | 20% |
| C. | 50% |
| D. | 100% |
| Answer» B. 20% | |
| 306. |
Terrestrial biome vegetation effects |
| A. | Soil Structure |
| B. | Weather |
| C. | Precipitation |
| D. | Vegetation cover |
| Answer» B. Weather | |
| 307. |
What is average temperature of taiga in winter ? |
| A. | 4C |
| B. | 5C |
| C. | 6C |
| D. | 9C |
| Answer» D. 9C | |
| 308. |
Which consumers use carbon in their food ? |
| A. | Eukaryotic algae |
| B. | Detrivores |
| C. | Saprotrophs |
| D. | Both b and c |
| Answer» E. | |
| 309. |
Which state in India has the maximum percentage of its area covered by forests? |
| A. | Arunachal Pradesh |
| B. | Madhya Pradesh |
| C. | Mizoram |
| D. | Nagaland |
| Answer» C. Mizoram | |
| 310. |
'Herbivores' are known as |
| A. | Secondary Consumers |
| B. | Primary consumers |
| C. | Producers |
| D. | Decomposers |
| Answer» C. Producers | |
| 311. |
If there is a shortage of deer in forest, what tiger might do? |
| A. | Eat grassland leaves |
| B. | Die due to starvation |
| C. | Hunt for other animals |
| D. | Fasting until they find deer |
| Answer» D. Fasting until they find deer | |
| 312. |
What are two major components of an ecosystem? |
| A. | Biotic and abiotic factors |
| B. | Microorganisms |
| C. | Temperature and humidity |
| D. | Light and Food |
| Answer» B. Microorganisms | |
| 313. |
'Decomposers' are also known as |
| A. | Carnivores |
| B. | Saprotrophs |
| C. | Carnivores |
| D. | Producer |
| Answer» C. Carnivores | |
| 314. |
What produces high level of ground ozone? |
| A. | Metals and Hydrocarbons |
| B. | Hydrocarbons and Nitrogen Oxides |
| C. | Both a and b |
| D. | Nox and Sox |
| Answer» C. Both a and b | |
| 315. |
Ppm stands for |
| A. | Parts per million |
| B. | Page per minute |
| C. | Portable people meter |
| D. | People progressive movement |
| Answer» B. Page per minute | |
| 316. |
All the ocean life depends on the |
| A. | Primary Producers |
| B. | Phytoplankton |
| C. | Both a and b |
| D. | Marine Organism |
| Answer» D. Marine Organism | |
| 317. |
What percent of energy is lost during each trophic level? |
| A. | 10% |
| B. | 30% |
| C. | 80% |
| D. | 90% |
| Answer» E. | |
| 318. |
In solar ecosystem, an extra energy is available for system, used for production of: |
| A. | Organic matters |
| B. | Food |
| C. | Water |
| D. | CO₂ |
| Answer» B. Food | |
| 319. |
What are examples of consumers? |
| A. | Green plants |
| B. | Animals and Protozoa |
| C. | Herbivores |
| D. | Bacteria |
| Answer» C. Herbivores | |
| 320. |
Why the ozone in the stratosphere is good for humans? |
| A. | It does not allow the harmful rays of sun to reach the earth surface |
| B. | It protects humans/Animals and plants from disease |
| C. | Blocks the harmful radiations to reach on the surface of earth and protects human from diseases |
| D. | Blocks the pollutant to upper parts of the atmosphere |
| Answer» D. Blocks the pollutant to upper parts of the atmosphere | |
| 321. |
The hydrogen is added to the carbondioxide molecules to form sugar and other carbohyderates while the oxygen leave the |
| A. | Leaf |
| B. | Stem |
| C. | Roots |
| D. | Enyzms |
| Answer» B. Stem | |
| 322. |
The total of all the individuals of the same species in an ecosystem is known as |
| A. | Community |
| B. | Population |
| C. | Ecosystem |
| D. | Biosphere |
| Answer» C. Ecosystem | |
| 323. |
Which forest is a source of lumber and paper pulp? |
| A. | Tropical rain forest |
| B. | Monsoon |
| C. | Desert |
| D. | Boreal Forest |
| Answer» E. | |
| 324. |
'Abiotic' community cannot live in |
| A. | Polluted environment |
| B. | Isolation |
| C. | Without sunlight |
| D. | Hydrosphere |
| Answer» C. Without sunlight | |
| 325. |
Primary macro-consumers are herbivores, which feeds on |
| A. | Animals |
| B. | Minute floating Plants |
| C. | Living Plants and plant residue |
| D. | Decomposers |
| Answer» D. Decomposers | |
| 326. |
Which biome is located at equatorial region? |
| A. | Taiga forests |
| B. | Tropical Rain Forests |
| C. | Temperate Forest |
| D. | Boreal Forest |
| Answer» C. Temperate Forest | |
| 327. |
Enzymes are present in the |
| A. | Water |
| B. | Soil |
| C. | Plants Cell |
| D. | Nutrients |
| Answer» D. Nutrients | |
| 328. |
Where can we find coniferous forest in India? |
| A. | Deserts |
| B. | River deltas |
| C. | Grassland |
| D. | Himalayan |
| Answer» E. | |
| 329. |
Who believes that quotas and regulations are not necessary for fishing? |
| A. | Fishermen |
| B. | Farmers |
| C. | Employees |
| D. | All of these |
| Answer» B. Farmers | |
| 330. |
Soot causes |
| A. | Low level Smog |
| B. | Acid Rain |
| C. | Global Warming |
| D. | GHGs |
| Answer» B. Acid Rain | |
| 331. |
How many types of ecological models are there? |
| A. | One |
| B. | Two |
| C. | Three |
| D. | Four |
| Answer» C. Three | |
| 332. |
What are examples of detrivores? |
| A. | Estuaries and mangroves |
| B. | Ponds |
| C. | Rainforests |
| D. | Deserts |
| Answer» B. Ponds | |
| 333. |
Which kind of soil we can found on the surface of Thar desert? |
| A. | Rocky |
| B. | Moist |
| C. | Fertile |
| D. | Aeolian |
| Answer» E. | |
| 334. |
All the organisms are |
| A. | Dependent |
| B. | Independent |
| C. | Interdependent |
| D. | None of these |
| Answer» D. None of these | |
| 335. |
Which biome is the most productive biome? |
| A. | Savanna |
| B. | Tropical rain forest |
| C. | Tundra |
| D. | Cool temperate |
| Answer» C. Tundra | |
| 336. |
Which of the following is correct order of food web for aquatic food web? |
| A. | Diatoms->pteropods->lantern fish->squid->marlin |
| B. | Diatoms->lantern fish->squid->marlin->pteropods |
| C. | Lantern fish-> diatoms-> squid-> marlin->pteropods |
| D. | Lantern fish-> diatoms-> squid-> pteropods-> marlin |
| Answer» B. Diatoms->lantern fish->squid->marlin->pteropods | |
| 337. |
Which of the following ecological pyramids is the most fundamental? |
| A. | Pyramid of energy |
| B. | Pyramid of numbers |
| C. | Pyramid of biomass |
| D. | Pyramid of force |
| Answer» B. Pyramid of numbers | |
| 338. |
Green plants are called |
| A. | Herbivores |
| B. | Consumers |
| C. | Producers |
| D. | Omnivores |
| Answer» D. Omnivores | |
| 339. |
In tropical rain forest, annual rain exceeds |
| A. | 140cm |
| B. | 120cm |
| C. | 90cm |
| D. | 100cm |
| Answer» B. 120cm | |
| 340. |
In which areas the carnivores live in a small groups? |
| A. | East African Savanna's |
| B. | Tundra |
| C. | Tropical Forests |
| D. | Cool Temperate |
| Answer» B. Tundra | |
| 341. |
Carbon dioxide is causes |
| A. | Air pollution |
| B. | Fatigue Headaches |
| C. | Global Warming |
| D. | Heath problems |
| Answer» C. Global Warming | |
| 342. |
In which process the opposite of photosnthesis occurs? |
| A. | Infiltration |
| B. | Respiration |
| C. | Transpiration |
| D. | Evaporation |
| Answer» C. Transpiration | |
| 343. |
The extent of tropical rain forest in central and south America is greater than in |
| A. | Africa |
| B. | Australia |
| C. | Asia |
| D. | Antarctica |
| Answer» D. Antarctica | |
| 344. |
How can desert ecosystems be conserved? |
| A. | By minimizing the human activity |
| B. | By pouring water to desert area |
| C. | By deforestation |
| D. | By killing organisms |
| Answer» B. By pouring water to desert area | |
| 345. |
Anthropogenic pollutants have overloaded system, while natural equilibrium is |
| A. | Unbalanced |
| B. | Destructed |
| C. | Balanced |
| D. | Disturbed |
| Answer» E. | |
| 346. |
Closed seasons for fishing is during |
| A. | Main Breeding time |
| B. | Not breeding time |
| C. | After the breeding time |
| D. | All of these |
| Answer» B. Not breeding time | |
| 347. |
What is energy input in man subsidized solar powered ecosystem? |
| A. | 10,000 to 50,000 kcal/m² per year |
| B. | 3,000 to 40,000 kcal/m² per year |
| C. | 30,000 to 40,000 kcal/m² per year |
| D. | 10,000 to 40,000kcal/m² per year |
| Answer» E. | |
| 348. |
Zone marking end of troposphere is known as: |
| A. | Stratopouse |
| B. | Tropopause |
| C. | Menopause |
| D. | Thermopause |
| Answer» C. Menopause | |
| 349. |
Fishermen are allowed to caught |
| A. | 20% |
| B. | 25% |
| C. | 12% |
| D. | 15% |
| Answer» C. 12% | |
| 350. |
Conversion of solar energy is governed by law of |
| A. | Conversion |
| B. | Convection |
| C. | Thermodynamics |
| D. | Inertia |
| Answer» D. Inertia | |