MCQOPTIONS
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MCQOPTIONS
This section includes 657 Mcqs, each offering curated multiple-choice questions to sharpen your Testing Subject knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Flowering plants are placed in – |
| A. | in cryptogames |
| B. | in fanrogames |
| C. | in bryophytes |
| D. | in pteridophytes |
| Answer» C. in bryophytes | |
| 2. |
Hydrophytes are |
| A. | Sea creatures |
| B. | aquatic plants |
| C. | plant diseases |
| D. | rootless plant |
| Answer» C. plant diseases | |
| 3. |
System Nature is the famous book of- |
| A. | Darwin |
| B. | lamarck |
| C. | Linnaeus |
| D. | robert hook |
| Answer» D. robert hook | |
| 4. |
The basic unit of classification is |
| A. | genus |
| B. | family |
| C. | Species |
| D. | order |
| Answer» D. order | |
| 5. |
Water is transported in plants by |
| A. | by cambian |
| B. | by phloem |
| C. | by xylem |
| D. | By the epidermis |
| Answer» D. By the epidermis | |
| 6. |
Binomial system means to write the names of plants in two words, which describe their - |
| A. | lineage and caste |
| B. | race and variety |
| C. | clan and lineage |
| D. | clan and clan |
| Answer» B. race and variety | |
| 7. |
Non flowering plants are kept in – |
| A. | in cryptogames |
| B. | in fanrogames |
| C. | in bryophytes |
| D. | in pteridophytes |
| Answer» B. in fanrogames | |
| 8. |
How many essential elements are needed for the growth of plants? |
| A. | 6 |
| B. | 10 |
| C. | 16 |
| D. | 21 |
| Answer» D. 21 | |
| 9. |
The water available in the soil for the roots of the plant is |
| A. | capillary water |
| B. | hygroscopic water |
| C. | gravitational water |
| D. | none of these |
| Answer» B. hygroscopic water | |
| 10. |
Who is the cause of black heart in potato? |
| A. | copper deficiency |
| B. | potassium deficiency |
| C. | lack of oxygen |
| D. | Boron deficiency |
| Answer» D. Boron deficiency | |
| 11. |
Transpiration takes place - |
| A. | from stems |
| B. | from the roots |
| C. | from leaves |
| D. | from all pneumatic parts |
| Answer» E. | |
| 12. |
The cyanosis of leaves is caused by the deficiency of- |
| A. | That |
| B. | Mg |
| C. | Mo |
| D. | With |
| Answer» C. Mo | |
| 13. |
The loss of water in the form of vapor from the aerial parts of the plant is called |
| A. | osmosis |
| B. | respiration |
| C. | Photosynthesis |
| D. | transpiration |
| Answer» E. | |
| 14. |
Ring disease is known as- |
| A. | locomotor disease |
| B. | mosaic disease |
| C. | bunky top |
| D. | wart disease |
| Answer» B. mosaic disease | |
| 15. |
The fungus responsible for red rot disease of sugarcane is |
| A. | Sarcospora persona |
| B. | Phytophthera infestance |
| C. | claviceps purpurea |
| D. | Colletotricum falcatum |
| Answer» E. | |
| 16. |
The fungus responsible for the late blight disease in potato is- |
| A. | Sarcospora persona |
| B. | Phytophthera infestance |
| C. | claviceps purpurea |
| D. | sclerospora gramicola |
| Answer» C. claviceps purpurea | |
| 17. |
Ear disease in millet is caused by which of the following fungi? |
| A. | sclerospora gramicola |
| B. | Fiftera Infestance |
| C. | claviceps purpurea |
| D. | Sarcospora persona |
| Answer» B. Fiftera Infestance | |
| 18. |
Citrus Cancer is - |
| A. | a species of lemon |
| B. | famous lemon pest |
| C. | a disease of lemon |
| D. | none of these |
| Answer» D. none of these | |
| 19. |
The fungus responsible for Tikka disease in groundnut is- |
| A. | Sarcospora persona |
| B. | Colletotricum falcatum |
| C. | claviceps purpurea |
| D. | Puccinia graminis |
| Answer» B. Colletotricum falcatum | |
| 20. |
Agnireja diseases are related to – |
| A. | Apple |
| B. | Orange |
| C. | Grape |
| D. | Coconut |
| Answer» B. Orange | |
| 21. |
The scientists working on rust disease related to wheat are – |
| A. | H.C. bold |
| B. | KC Mehta |
| C. | Birbal Sawhney |
| D. | DD Pant |
| Answer» C. Birbal Sawhney | |
| 22. |
Red rust disease in tea is caused by- |
| A. | bacteria |
| B. | Lichen |
| C. | fungus |
| D. | green algae |
| Answer» E. | |
| 23. |
Khaira, the famous disease of paddy, is caused by- |
| A. | due to mildew |
| B. | due to bacteria |
| C. | due to virus |
| D. | due to zinc deficiency |
| Answer» E. | |
| 24. |
Green ear disease is related to which crop? |
| A. | Mustard |
| B. | Rice |
| C. | Millet |
| D. | Peanut |
| Answer» D. Peanut | |
| 25. |
The organisms in the base plane of the bard food chain are - |
| A. | producer |
| B. | Vegetarian |
| C. | Non-vegetarian |
| D. | decomposer |
| Answer» B. Vegetarian | |
| 26. |
The most dangerous effect of excessive deforestation is – |
| A. | destruction of wild animal habitats |
| B. | soil erosion |
| C. | Damage to forest property |
| D. | loss of many valuable plants |
| Answer» C. Damage to forest property | |
| 27. |
Which is the best source of electricity generation from the point of view of sustainable development in India? |
| A. | Coal |
| B. | Minerals - Oil u0026 Gas |
| C. | hydropower |
| D. | Nuclear Energy |
| Answer» D. Nuclear Energy | |
| 28. |
Sustainable developments whose use is a matter of inter-generational sensitivity |
| A. | natural resources |
| B. | Physical Resources |
| C. | industrial resources |
| D. | social resources |
| Answer» B. Physical Resources | |
| 29. |
The zone of transition between two different communities is called |
| A. | ecotype |
| B. | Iked |
| C. | ecosphere |
| D. | ecotone |
| Answer» E. | |
| 30. |
Ecomark is given to those Indian products which - |
| A. | be pure and adulterated |
| B. | Protein is rich |
| C. | be environmentally friendly |
| D. | be economically viable |
| Answer» D. be economically viable | |
| 31. |
Which of the following is the most effective agent of coral bleaching? |
| A. | ocean pollution |
| B. | increase in the salinity of the oceans |
| C. | increase in the normal temperature of sea water |
| D. | spread of diseases and epidemics |
| Answer» D. spread of diseases and epidemics | |
| 32. |
The main factor determining the balance of nature is |
| A. | human activities |
| B. | Rabbit and Habitat |
| C. | environmental conditions |
| D. | food availability |
| Answer» B. Rabbit and Habitat | |
| 33. |
Chipko movement was originally against |
| A. | of water pollution |
| B. | of noise pollution |
| C. | of deforestation |
| D. | of cultural pollution |
| Answer» D. of cultural pollution | |
| 34. |
The pigment which protects the plants from the harmful effects of ultraviolet rays is |
| A. | chlorophyll |
| B. | carotenoids |
| C. | Phycocyanin |
| D. | plastid |
| Answer» D. plastid | |
| 35. |
The stability of the Taal ecosystem depends on – |
| A. | on microorganisms and fish |
| B. | on microorganisms and zooplankton |
| C. | on fish and reptiles |
| D. | producers and consumers |
| Answer» E. | |
| 36. |
The word Aghanya used in many passages of Rigveda refers to - |
| A. | for the priest |
| B. | for woman |
| C. | for the cow |
| D. | for brahmin |
| Answer» D. for brahmin | |
| 37. |
Which one of the following is a major cause of ecological imbalance in India? |
| A. | deforestation |
| B. | desertification |
| C. | floods and famines |
| D. | variability of rainfall |
| Answer» B. desertification | |
| 38. |
The Red Data Book gives information about the species which - |
| A. | are missing |
| B. | are in danger |
| C. | are dangerous |
| D. | are rare |
| Answer» C. are dangerous | |
| 39. |
Epiplants are found in places where - |
| A. | oxygen concentration is high |
| B. | the temperature is too low |
| C. | it rains all year round |
| D. | rainfall depends on the season |
| Answer» D. rainfall depends on the season | |
| 40. |
If all the plants in the world die, then all the animals will die because of the lack of |
| A. | oxygen |
| B. | wood |
| C. | cold air |
| D. | Meal |
| Answer» B. wood | |
| 41. |
Myrmecophily is a beneficial association of some flowering plants. |
| A. | between bacteria |
| B. | between viruses |
| C. | among the ants |
| D. | between mycoplasma |
| Answer» D. between mycoplasma | |
| 42. |
Which of the following is a threat to biodiversity? |
| A. | Fragile ecosystems such as mangroves and wetlands |
| B. | Inaccessible Habitat in the Himalayas |
| C. | Destruction of natural habitats and vegetation and shifting cultivation |
| D. | reserve biosphere |
| Answer» D. reserve biosphere | |
| 43. |
When we eat goat meat, then we - |
| A. | are primary consumers |
| B. | secondary consumers are |
| C. | are tertiary consumers |
| D. | none of these |
| Answer» C. are tertiary consumers | |
| 44. |
The world's largest ecosystem is |
| A. | grassland |
| B. | big lakes |
| C. | Sea |
| D. | Forest |
| Answer» D. Forest | |
| 45. |
Hydrophyte says - |
| A. | Of a marine animal |
| B. | to an aquatic plant |
| C. | a plant disease |
| D. | a rootless plant |
| Answer» C. a plant disease | |
| 46. |
Which is the biggest fixator of solar energy? |
| A. | bacteria |
| B. | protozoa |
| C. | fungus |
| D. | Green plants |
| Answer» E. | |
| 47. |
An example of a non-living component of the environment is - |
| A. | vegetation |
| B. | Animal |
| C. | Air |
| D. | All |
| Answer» D. All | |
| 48. |
Energy is obtained from |
| A. | moon |
| B. | Sea |
| C. | Sun |
| D. | Air |
| Answer» D. Air | |
| 49. |
In order to maintain ecological balance, the forest area in India should be in what percentage? |
| A. | 11.1 प्रतिशत |
| B. | 22.2 प्रतिशत |
| C. | 33.3 प्रतिशत |
| D. | 44.4 प्रतिशत |
| Answer» D. 44.4 प्रतिशत | |
| 50. |
Food chain refers to energy transfer through which of the following? |
| A. | underground to ground |
| B. | from one organism to another |
| C. | from low latitude to high latitude |
| D. | From the organisms of the land to the creatures of the sea by the river |
| Answer» C. from low latitude to high latitude | |