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.
| 351. |
What are names of aquatic biomes? |
| A. | Marine and fresh water |
| B. | Oceans and lakes |
| C. | seas and streams |
| D. | streams and ice cape |
| Answer» B. Oceans and lakes | |
| 352. |
How grassland converted into flat stubs? |
| A. | By over grazing |
| B. | By less grazing |
| C. | By climatic changes |
| D. | By less water |
| Answer» B. By less grazing | |
| 353. |
What ensures long term survival of an ecosystem? |
| A. | Diversity of species |
| B. | Ecosystem |
| C. | Microorganisms |
| D. | Nutrient cycle |
| Answer» B. Ecosystem | |
| 354. |
What is most distinctive feature of temperate shrub forests? |
| A. | Deciduous Trees |
| B. | Chapparrals |
| C. | Tall Trees |
| D. | Grasses |
| Answer» C. Tall Trees | |
| 355. |
What health problems are caused by lead? |
| A. | Brain Damage |
| B. | Asthma |
| C. | Heart issues |
| D. | Lung disease |
| Answer» B. Asthma | |
| 356. |
A set of 'ecosystem' is known as |
| A. | Biome |
| B. | Biosphere |
| C. | Atmosphere |
| D. | Hydrosphere |
| Answer» B. Biosphere | |
| 357. |
50% of incident energy is lost due to: |
| A. | Consumers |
| B. | Producers |
| C. | Microorganisms |
| D. | Planktons |
| Answer» C. Microorganisms | |
| 358. |
Which part of the ocean is the nutrient rich? |
| A. | Continental Shelf's |
| B. | Deeper part of the Ocean |
| C. | Both a and b |
| D. | None of these |
| Answer» B. Deeper part of the Ocean | |
| 359. |
What is the example of interdependence of living organism? |
| A. | Cats and Grass |
| B. | Fishes and plants |
| C. | Lions and Tigers |
| D. | Bees and Flowers |
| Answer» E. | |
| 360. |
Why do all food chains start with plants? |
| A. | Because plants are easily grown |
| B. | Because plants are nutritious |
| C. | Because plants can produce its own energy |
| D. | Because plants do not require energy |
| Answer» D. Because plants do not require energy | |
| 361. |
Amount of incoming solar radiations is, approximately |
| A. | 4372watts/m² |
| B. | 3372watts/m² |
| C. | 2372watts/m² |
| D. | 1372watts/m² |
| Answer» E. | |
| 362. |
Which resource of ocean is very important for humans? |
| A. | Fishes |
| B. | Water |
| C. | Planktons |
| D. | All of these |
| Answer» B. Water | |
| 363. |
Ecosystem services are the benefits that humans freely gain from nature. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» B. False | |
| 364. |
Animals which feed on primary producers are known as: |
| A. | Herbivores |
| B. | Omnivores |
| C. | Carnivores |
| D. | Herbicides |
| Answer» B. Omnivores | |
| 365. |
What is the exception to the upright pyramid of biomass? |
| A. | Temperate forests |
| B. | Deserts |
| C. | Aquatic ecosystems |
| D. | Grassland ecosystems |
| Answer» D. Grassland ecosystems | |
| 366. |
Living organisms are dependent on one another for survival, growth and |
| A. | Resources |
| B. | Reproduction |
| C. | Water |
| D. | Habitat |
| Answer» C. Water | |
| 367. |
What is called for the diagram that shows how food chain linked together into more complex feeding relationship? |
| A. | Food web |
| B. | Food chain |
| C. | Food circle |
| D. | Food triangle |
| Answer» B. Food chain | |
| 368. |
Carnivores are known as |
| A. | Primary Producers |
| B. | Secondary Producers |
| C. | Secondary Consumers |
| D. | Herbivores |
| Answer» D. Herbivores | |
| 369. |
'Water' has a high |
| A. | Dipolic movement |
| B. | Tripolic Movement |
| C. | No dipolic movement |
| D. | No tripolic movement |
| Answer» B. Tripolic Movement | |
| 370. |
According to Millennium Ecosystem Assessment, how many percent of ecosystem services are used unsustainably? |
| A. | 50% |
| B. | 60% |
| C. | 70% |
| D. | 80% |
| Answer» C. 70% | |
| 371. |
In each trophic level, 90% of the energy is lost only 10 percent is passed on to the next level which is known as |
| A. | 90% Rule |
| B. | 10% Rule |
| C. | 30% Rule |
| D. | 70% Rule |
| Answer» C. 30% Rule | |
| 372. |
Copper is used for the manufacturing of |
| A. | Electrical wires |
| B. | Batteries |
| C. | Roofing |
| D. | Jewelries |
| Answer» B. Batteries | |
| 373. |
Total amount of living material in an organism at different levels is known as |
| A. | The pyramid of number |
| B. | The pyramid of energy |
| C. | The pyramid of Animals |
| D. | The pyramid of biomass |
| Answer» E. | |
| 374. |
What is chloropyll? |
| A. | It's a green pigment in the plant |
| B. | Ezymes |
| C. | Glocose |
| D. | Fructose |
| Answer» B. Ezymes | |
| 375. |
In which trophic level herbivors are |
| A. | Trophic Level 1 |
| B. | Trophic Level 2 |
| C. | Trophic Level 4 |
| D. | Trophic Level 3 |
| Answer» C. Trophic Level 4 | |
| 376. |
In which ecosystem sun is main source of energy ? |
| A. | Fuel power ecosystem |
| B. | Man subsidized solar power ecosystem |
| C. | Unsubsidized natural solar powered ecosystem |
| D. | Naturally subsidized solar powered ecosystem |
| Answer» E. | |
| 377. |
The industrial revolution was based on which mineral? |
| A. | Steel |
| B. | Iron |
| C. | Coal |
| D. | Copper |
| Answer» D. Copper | |
| 378. |
Herbivores such as wild beests and zebra live in vast herbs on the |
| A. | Tundra |
| B. | East African Savanna's |
| C. | Cool Temperate |
| D. | Tropical Forests |
| Answer» C. Cool Temperate | |
| 379. |
What stabilize the temperature of earth? |
| A. | Oceans |
| B. | Climate |
| C. | Precipitation |
| D. | land |
| Answer» B. Climate | |
| 380. |
Air density decreases along with |
| A. | Latitude |
| B. | Altitude |
| C. | Sea level |
| D. | Soil erosion |
| Answer» C. Sea level | |
| 381. |
Which of the following organisms begins marine food chains? |
| A. | Phytoplankton |
| B. | Fishes |
| C. | Zooplankton |
| D. | Corals |
| Answer» B. Fishes | |
| 382. |
What are characterization of desert ? |
| A. | Lack of water |
| B. | Abundance of sand |
| C. | Excess of water |
| D. | Both a and b |
| Answer» E. | |
| 383. |
Which of the following tribe protected trees from several generation in Rajasthan? |
| A. | Bishnoi |
| B. | Papadi |
| C. | Korvanji |
| D. | Gudus |
| Answer» B. Papadi | |
| 384. |
Who developed ecological pyramids for the first time? |
| A. | Charles Newton |
| B. | Charles Elton |
| C. | Charles Babbage |
| D. | Charles Darwin |
| Answer» C. Charles Babbage | |
| 385. |
Every major fishing grounds in the world are under |
| A. | Risk |
| B. | safe Conditions |
| C. | Exploitations |
| D. | Over Fishing |
| Answer» B. safe Conditions | |
| 386. |
In Peru, the fishing season is closed for the period of |
| A. | 2-3 months |
| B. | 3-4 months |
| C. | 1 month |
| D. | 5 months |
| Answer» B. 3-4 months | |
| 387. |
What is re-establishment of ecosystem? |
| A. | Secondary succession |
| B. | Primary succession |
| C. | Ecological Function |
| D. | Ecological system |
| Answer» B. Primary succession | |
| 388. |
An example of a producer in pond water: |
| A. | Minute floating plants |
| B. | Microorganism |
| C. | Consumers |
| D. | Carnivores |
| Answer» B. Microorganism | |
| 389. |
Which component are made of different population of species and are interdependent? |
| A. | Abiotic elements |
| B. | Biotic elements |
| C. | Inorganic |
| D. | Organic factors |
| Answer» C. Inorganic | |
| 390. |
Why the range of fishing was limited to home port? |
| A. | Due to Limited Fuel |
| B. | Due to default in the Boat |
| C. | Less technological advancement |
| D. | All of these |
| Answer» B. Due to default in the Boat | |
| 391. |
Which metals and stones are used formation of jewelry? |
| A. | Silver and copper |
| B. | Gold and Copper |
| C. | Gold and Silver |
| D. | Gold and Lead |
| Answer» D. Gold and Lead | |
| 392. |
Which type of food chain starts from dead organic matter and goes to detritivores to predators? |
| A. | Detritus food chain |
| B. | Grazing food chain |
| C. | Biological system |
| D. | Tropical Level |
| Answer» B. Grazing food chain | |
| 393. |
What is annual rainfall in tropical savannah? |
| A. | 100-150cm |
| B. | 100-40cm |
| C. | 100-400cm |
| D. | 100-70cm |
| Answer» B. 100-40cm | |
| 394. |
System involved in interconnection of living and non-living organisms is known as |
| A. | Biosphere |
| B. | Ecosystem |
| C. | Hydrosphere |
| D. | Atmosphere |
| Answer» C. Hydrosphere | |
| 395. |
'Marine' biome includes: |
| A. | Swamps and springs |
| B. | Rivers, Lakes and Ponds |
| C. | Streams and Lakes |
| D. | Deep Sea and Oceans |
| Answer» E. | |
| 396. |
What are the examples of abiotic elements |
| A. | Soil, water, atmosphere |
| B. | Lion, plants |
| C. | Microorganism |
| D. | Elephants, fishes |
| Answer» B. Lion, plants | |
| 397. |
Initial causes of ecological succession includes: |
| A. | Climatic and Biotic factors |
| B. | Abiotic Factors |
| C. | Water Vapours |
| D. | Air Precipitation |
| Answer» B. Abiotic Factors | |
| 398. |
In an ecosystem competes for |
| A. | Light, space,food,reproduction |
| B. | Soil and Climate |
| C. | Local Factors |
| D. | water and nutrients |
| Answer» B. Soil and Climate | |
| 399. |
All food molecules contains |
| A. | Carbon, Hydrogen and Oxygen |
| B. | Ezymes, Water, Soil |
| C. | Carbon, Water, Oxygen |
| D. | Nutrients |
| Answer» B. Ezymes, Water, Soil | |
| 400. |
Pyramid of energy shows the relationship between energy and trophic level. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» B. False | |