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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 | |