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.
| 1. |
In the food relationship, where the tiger eats the deer and the deer eats plants. Which of the following conditions is true? |
| A. | The tiger is the prey |
| B. | The tiger is the primary consumer |
| C. | The deer is the predator |
| D. | The deer is the prey |
| Answer» E. | |
| 2. |
Hawks, lizards, owls and cats are examples of |
| A. | Primary producers |
| B. | Tertiary Consumers |
| C. | Secondary Consumers |
| D. | Herbicides |
| Answer» D. Herbicides | |
| 3. |
Animals, feed on herbivores, known as |
| A. | Primary producers |
| B. | Primary consumers |
| C. | Secondary Consumers |
| D. | Tertiary Consumers |
| Answer» D. Tertiary Consumers | |
| 4. |
What is the Biotic elements |
| A. | Living things |
| B. | Non-Living things |
| C. | Living and Non-living things |
| D. | Microorganism |
| Answer» B. Non-Living things | |
| 5. |
What is a food chain? |
| A. | A long chain made of food |
| B. | Process of preparing food |
| C. | Food where locked by chain |
| D. | Pathway that energy and nutrients flow through the ecosystem |
| Answer» E. | |
| 6. |
In an energy pyramid, which way does energy transfer occur? |
| A. | From both top to bottom and bottom to top of pyramid |
| B. | From middle of pyramid |
| C. | From top to the bottom of pyramid |
| D. | From bottom to the top of pyramid |
| Answer» E. | |
| 7. |
Which water can be consumed by humans? |
| A. | Ocean water |
| B. | Sea water |
| C. | Fresh water |
| D. | Marine water |
| Answer» D. Marine water | |
| 8. |
Carnivors fall in which trophic level? |
| A. | Trophic Level 2 |
| B. | Trophic Level 4 |
| C. | Trophic Level 1 |
| D. | Trophic Level 3 |
| Answer» E. | |
| 9. |
Which of the following condition is true about food chain? |
| A. | Provide more energy for next trophic level |
| B. | Provides food for succeeding organisms |
| C. | Consume energy from next trophic level |
| D. | Do not pass energy to next trophic level |
| Answer» C. Consume energy from next trophic level | |
| 10. |
Green plants such as grasses, bushes and trees are in which trophic level? |
| A. | Trophic Level 4 |
| B. | Trophic Level 3 |
| C. | Trophic Level 1 |
| D. | Trophic Level 2 |
| Answer» D. Trophic Level 2 | |
| 11. |
How much atmospheric mass is on troposphere? |
| A. | One-Fourth |
| B. | Two-Fourth |
| C. | Three -Fourth |
| D. | Non of above |
| Answer» D. Non of above | |
| 12. |
Sulphurdioxide causes |
| A. | Acid Rain |
| B. | Global Warming |
| C. | Air Pollution |
| D. | water Pollution |
| Answer» B. Global Warming | |
| 13. |
What is the length of continental shelf? |
| A. | 400 meter |
| B. | 200meter |
| C. | 300 meter |
| D. | 500 meter |
| Answer» C. 300 meter | |
| 14. |
Where can we find thorn forest in India? |
| A. | Semi-arid regions |
| B. | Desert regions |
| C. | Himalayan regions |
| D. | Northeast regions |
| Answer» B. Desert regions | |
| 15. |
Animals at the top of food chain are |
| A. | Often small and Few in numbers |
| B. | Often large and Few in numbers |
| C. | Large in numbers |
| D. | Large animals |
| Answer» C. Large in numbers | |
| 16. |
In which layer temperature decrease with increase in altitude? |
| A. | Stratosphere |
| B. | Mesosphere |
| C. | Troposphere |
| D. | Thermosphere |
| Answer» D. Thermosphere | |
| 17. |
Organism at the bottom of food chain are |
| A. | Numerous |
| B. | Very small number |
| C. | Negligible |
| D. | Very few |
| Answer» B. Very small number | |
| 18. |
Terrestrial vegetation has rapid exchange of oxygen, water and |
| A. | climate |
| B. | Nutrients |
| C. | Carbon dioxide |
| D. | Precipitation |
| Answer» D. Precipitation | |
| 19. |
What is an average incident energy ? |
| A. | 3000kcal/m²/day |
| B. | 2000kcal/m²/day |
| C. | 5000kcal/m²/day |
| D. | 6000kcal/m²/day |
| Answer» B. 2000kcal/m²/day | |
| 20. |
How many types of an ecosystem is divided into ? |
| A. | 2 |
| B. | 3 |
| C. | 4 |
| D. | 5 |
| Answer» D. 5 | |
| 21. |
Phytoplankton's are the |
| A. | Primary producers |
| B. | Secondary Producers |
| C. | Tertiary Producers |
| D. | All of these |
| Answer» B. Secondary Producers | |
| 22. |
What are examples of naturally subsidized solar powered ecosystem? |
| A. | Coastal estuary and tropical rain forest |
| B. | Deserts and rain forest |
| C. | Tundra and thick forest |
| D. | Taiga forest |
| Answer» B. Deserts and rain forest | |
| 23. |
Which is most rigid part of earth layer ? |
| A. | Triosphere |
| B. | Mesophere |
| C. | Stratosphere |
| D. | Lithosphere |
| Answer» E. | |
| 24. |
Which of the following shows the numbers of the producers, herbivores and the carnivores at their successive trophic levels? |
| A. | Food web |
| B. | Food chain |
| C. | Pyramid of biomass |
| D. | Pyramid of numbers |
| Answer» E. | |
| 25. |
Industrial waste contains highly toxic elements such as lead, mercury, arsenic and |
| A. | Cadmium |
| B. | Cobalt |
| C. | Boron |
| D. | Antimony |
| Answer» B. Cobalt | |
| 26. |
Which ecosystem is important in purifying air, recycling water and controling climate? |
| A. | Man subsidized solar power ecosystem |
| B. | Fuel power ecosystem |
| C. | Naturally subsidized solar powered ecosystem |
| D. | Unsubsidized natural solar powered ecosystem |
| Answer» B. Fuel power ecosystem | |
| 27. |
The birds and insects transfer pollen between is known as |
| A. | Ecosystem |
| B. | Pollination |
| C. | Biosphere |
| D. | Hydrosphere |
| Answer» C. Biosphere | |
| 28. |
How much percent earth's volume lithosphere have ? |
| A. | 0.03 |
| B. | 0.01 |
| C. | 0.02 |
| D. | 0.06 |
| Answer» C. 0.02 | |
| 29. |
Why ground ozone is bad for humans? |
| A. | It irritates the bronchial passages and eyes/causes lung disease |
| B. | Irritates eyes/ Causes skin infections |
| C. | Lung Disease/ disfiguration |
| D. | Disfunctioning of normal body functions |
| Answer» B. Irritates eyes/ Causes skin infections | |
| 30. |
What is lower layer of atmosphere called? |
| A. | Ionosphere |
| B. | Mesosphere |
| C. | Troposphere |
| D. | Stratosphere |
| Answer» B. Mesosphere | |
| 31. |
How many categories an aquatic biome is divided into ? |
| A. | 2 |
| B. | 4 |
| C. | 6 |
| D. | 8 |
| Answer» B. 4 | |
| 32. |
Which gas is released from the green plants? |
| A. | Carbondioxides |
| B. | Oxygen |
| C. | Mathane |
| D. | All of these |
| Answer» C. Mathane | |
| 33. |
Humans are completely depended on the natural forest for food. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» C. May be True or False | |
| 34. |
What is boiling point of water? |
| A. | 100 C |
| B. | 99 C |
| C. | 89 C |
| D. | 88 C |
| Answer» B. 99 C | |
| 35. |
Which is lower layer of atmosphere? |
| A. | Stratosphere |
| B. | Troposphere |
| C. | Mesosphere |
| D. | Thermosphere |
| Answer» C. Mesosphere | |
| 36. |
Which biome is known as Mediterranean shrub forest? |
| A. | Taiga forests |
| B. | Temperate Shrub Forest |
| C. | Monsoon forests |
| D. | Tropical Rain forest |
| Answer» C. Monsoon forests | |
| 37. |
What dissolved gases in atmosphere during water falling ? |
| A. | Evapo-transpiration |
| B. | Condensation |
| C. | Precipitation |
| D. | Transpiration |
| Answer» D. Transpiration | |
| 38. |
What does ionosphere shell consist of ? |
| A. | Electrons |
| B. | Neutrons |
| C. | Protons |
| D. | atom |
| Answer» B. Neutrons | |
| 39. |
Deserts can only be ‘HOT’. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» C. May be True or False | |
| 40. |
What is the main reason for the reduction of ecological services? |
| A. | Excessive growth of forest |
| B. | Unsustainable depletion of natural capital |
| C. | Increase in the yield of food crops |
| D. | Improper management |
| Answer» C. Increase in the yield of food crops | |
| 41. |
Self nourishing organisms are known as |
| A. | Decomposers |
| B. | Heterotrophic |
| C. | Autotrophs |
| D. | Biotic |
| Answer» D. Biotic | |
| 42. |
Which water tends to be uniform throughout aquifer? |
| A. | Ground water |
| B. | Water from lakes |
| C. | Water from streams |
| D. | Oceans water |
| Answer» B. Water from lakes | |
| 43. |
The pyramid of biomass is upright in aquatic ecosystem. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» C. May be True or False | |
| 44. |
Which is second major layer of earth's atmosphere ? |
| A. | Troposphere |
| B. | Mesosphere |
| C. | Thermosphere |
| D. | Stratosphere |
| Answer» E. | |
| 45. |
In the modern fishing the board size is up to |
| A. | 100 m long |
| B. | 200 m Long |
| C. | 500m |
| D. | 600 m |
| Answer» B. 200 m Long | |
| 46. |
How forests increase the atmosphere’s humidity? |
| A. | By transpiration |
| B. | By inspiration |
| C. | By expiration |
| D. | By oxidation |
| Answer» B. By inspiration | |
| 47. |
Utilization, rearrangement and decomposition of complex organic matter, known as |
| A. | Autotrophic organisms |
| B. | Heterotrophic |
| C. | Producers |
| D. | Decomposers |
| Answer» C. Producers | |
| 48. |
How many types of food chain are there? |
| A. | 3 |
| B. | 2 |
| C. | 7 |
| D. | 4 |
| Answer» C. 7 | |
| 49. |
Organism in estuary can concentrate on conversion of sun energy into |
| A. | Food |
| B. | Organic matters |
| C. | Nutrients |
| D. | Water |
| Answer» D. Water | |
| 50. |
Which natural resources are available in the sea floor that are exploited by human? |
| A. | Oil |
| B. | Natural Gas and Oil |
| C. | Coal |
| D. | Thermal Energy |
| Answer» C. Coal | |