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. |
Which biologist first gave the name cell? |
| A. | brown |
| B. | robert hook |
| C. | Fleming |
| D. | none of these |
| Answer» C. Fleming | |
| 2. |
What is the substance found in more than 80% of the cell? |
| A. | water |
| B. | minerals |
| C. | protein |
| D. | fat |
| Answer» B. minerals | |
| 3. |
Who first synthesized DNA in the laboratory? |
| A. | Khurana has |
| B. | the miller |
| C. | by Darwin |
| D. | none of these |
| Answer» B. the miller | |
| 4. |
What are jeans made of? |
| A. | of RNA |
| B. | of proteins |
| C. | of DNA |
| D. | of DNA and RNA |
| Answer» D. of DNA and RNA | |
| 5. |
What is genetic mutation? |
| A. | chromosomes |
| B. | ribosome |
| C. | R. N. a |
| D. | none of these |
| Answer» B. ribosome | |
| 6. |
Where does protein synthesis take place in the cell? |
| A. | in the ribosome |
| B. | at the centrosome |
| C. | in the gall |
| D. | none of these |
| Answer» B. at the centrosome | |
| 7. |
Which of the following cell organelles contain DNA? |
| A. | golgi body |
| B. | mitochondria |
| C. | lysosomes |
| D. | centriole |
| Answer» C. lysosomes | |
| 8. |
What is the main function of Golgi body? |
| A. | produce digestive juices |
| B. | secretory |
| C. | respiration |
| D. | all these |
| Answer» C. respiration | |
| 9. |
What is used to measure decibels? |
| A. | particles in the air |
| B. | sugar in pee |
| C. | sound in the atmosphere |
| D. | none of these |
| Answer» D. none of these | |
| 10. |
Who coined the term gene? |
| A. | D. D. Pant |
| B. | johansson |
| C. | Mendel |
| D. | Darwin |
| Answer» C. Mendel | |
| 11. |
Who among the following is called the father of genetics? |
| A. | Mendel |
| B. | weedmann |
| C. | Darwin |
| D. | K. C. Mehta |
| Answer» B. weedmann | |
| 12. |
Food made in plants reaches different parts of the plant through |
| A. | phloem |
| B. | cortex |
| C. | xylem |
| D. | none of these |
| Answer» B. cortex | |
| 13. |
By whom has the science of heredity been called genetics? |
| A. | Watson |
| B. | Muller |
| C. | mendel |
| D. | none of these |
| Answer» B. Muller | |
| 14. |
What is the branch of biology that deals with the study of inheritance? |
| A. | genetics |
| B. | Physiology |
| C. | cell Biology |
| D. | none of these |
| Answer» B. Physiology | |
| 15. |
Mealybug is related to which crop? |
| A. | peanuts |
| B. | Mustard |
| C. | Sugarcane |
| D. | Fever |
| Answer» C. Sugarcane | |
| 16. |
The scientists working on rust disease related to wheat are? |
| A. | K. C. Mehta |
| B. | D. D. Pant |
| C. | Birbal Sawhney |
| D. | none of these |
| Answer» B. D. D. Pant | |
| 17. |
What causes the canker disease of lemon? |
| A. | bacteria |
| B. | Virus |
| C. | algae |
| D. | fungus |
| Answer» B. Virus | |
| 18. |
What is Agnireja disease related to? |
| A. | Coconut |
| B. | Orange |
| C. | Apple |
| D. | grapes |
| Answer» D. grapes | |
| 19. |
By whom is the movement of water and mineral salts carried out in plants? |
| A. | phloem |
| B. | xylem |
| C. | cortex |
| D. | pith |
| Answer» C. cortex | |
| 20. |
Is Citrus Cancer? |
| A. | a disease of lemon |
| B. | famous pest of lemon |
| C. | a species of lemon |
| D. | none of these |
| Answer» B. famous pest of lemon | |
| 21. |
What is the cause of black heart in potato? |
| A. | lack of oxygen |
| B. | potassium deficiency |
| C. | Boron deficiency |
| D. | copper deficiency |
| Answer» B. potassium deficiency | |
| 22. |
What causes Khaira disease? |
| A. | due to virus |
| B. | due to zinc deficiency |
| C. | due to bacteria |
| D. | all these |
| Answer» C. due to bacteria | |
| 23. |
Which of the following plant hormone prolongs the seeding plant and also helps in the formation of flowers? |
| A. | Ethylene |
| B. | Auxin |
| C. | Gibberellin |
| D. | none of these |
| Answer» D. none of these | |
| 24. |
Does a mimosa leaf have motion? |
| A. | Tagging |
| B. | Vibration |
| C. | photosynthesis |
| D. | none of these |
| Answer» C. photosynthesis | |
| 25. |
What is the green substance found in the leaves of trees called? |
| A. | nitrogen |
| B. | chlorophyll |
| C. | hemoglobin |
| D. | calcium |
| Answer» C. hemoglobin | |
| 26. |
Khaira disease is related to which crop? |
| A. | Grain |
| B. | Sugarcane |
| C. | Fever |
| D. | Peanut |
| Answer» B. Sugarcane | |
| 27. |
What causes red rust disease in tea? |
| A. | Virus |
| B. | bacteria |
| C. | green algae |
| D. | fungus |
| Answer» D. fungus | |
| 28. |
What is the process of preparing food for trees and plants called? |
| A. | Photosynthesis |
| B. | metabolic synthesis |
| C. | Carbohydrolysis |
| D. | none of these |
| Answer» B. metabolic synthesis | |
| 29. |
Which is the most responsible factor of plant diseases? |
| A. | bacteria |
| B. | mildew |
| C. | protozoa |
| D. | Virus |
| Answer» C. protozoa | |
| 30. |
Which gas is released by green plants in photosynthesis? |
| A. | Carbon dioxide |
| B. | oxygen |
| C. | nitrogen |
| D. | none of these |
| Answer» C. nitrogen | |
| 31. |
Where does the oxygen liberated in photosynthesis come from? |
| A. | atmosphere |
| B. | water |
| C. | Carbon dioxide |
| D. | none of these |
| Answer» C. Carbon dioxide | |
| 32. |
Which of the following comes out in the process of photosynthesis? |
| A. | oxygen |
| B. | hydrogen |
| C. | chlorine |
| D. | Carbon dioxide |
| Answer» B. hydrogen | |
| 33. |
When does photosynthesis take place? |
| A. | cable at night |
| B. | cable day |
| C. | in day and night |
| D. | day or night |
| Answer» C. in day and night | |
| 34. |
What is a respiratory measuring instrument called? |
| A. | Autometer |
| B. | respirometer |
| C. | potometer |
| D. | hygrometer |
| Answer» C. potometer | |
| 35. |
Where does transpiration take place in plants? |
| A. | leaf |
| B. | root |
| C. | stem |
| D. | whole plant |
| Answer» E. | |
| 36. |
The instrument by which the growth rate of the stem is measured accurately? |
| A. | potometer |
| B. | Autometer |
| C. | Axenometer |
| D. | respirometer |
| Answer» D. respirometer | |
| 37. |
It is not necessary to increase the height of plants. |
| A. | nitrogen |
| B. | sodium |
| C. | calcium |
| D. | Phosphorus |
| Answer» C. calcium | |
| 38. |
Which is the fruit ripening hormone? |
| A. | Ethylene |
| B. | Auxin |
| C. | Gibberellin |
| D. | all these |
| Answer» B. Auxin | |
| 39. |
Which of the following is essential in the process of photosynthesis? |
| A. | sunlight |
| B. | chlorophyll |
| C. | Carbon dioxide |
| D. | all these |
| Answer» E. | |
| 40. |
How many essential elements are needed for plant growth? |
| A. | 5 |
| B. | 11 |
| C. | 15 |
| D. | 16 |
| Answer» E. | |
| 41. |
Does transpiration take place? |
| A. | from the roots |
| B. | from all pneumatic parts |
| C. | from stems |
| D. | from leaves |
| Answer» C. from stems | |
| 42. |
From which part of the Cinnamon tree is it obtained? |
| A. | flower |
| B. | root |
| C. | bark |
| D. | leaves |
| Answer» D. leaves | |
| 43. |
The colorlessness of leaves is caused by the deficiency of |
| A. | Mg |
| B. | Mo |
| C. | That |
| D. | all these |
| Answer» B. Mo | |
| 44. |
What is a transpiration meter? |
| A. | Clino meter |
| B. | poto meter |
| C. | hygro meter |
| D. | none of these |
| Answer» C. hygro meter | |
| 45. |
The water in the soil available to the roots of plants is? |
| A. | gravitational water |
| B. | hygroscopic water |
| C. | capillary water |
| D. | none of these |
| Answer» D. none of these | |
| 46. |
By whom is water transported in plants? |
| A. | phloem |
| B. | skin |
| C. | xylem |
| D. | capillary |
| Answer» D. capillary | |
| 47. |
Get Litmus? |
| A. | from bacteria |
| B. | from algae |
| C. | from fungus |
| D. | from lichen |
| Answer» E. | |
| 48. |
Which vegetable food has maximum protein? |
| A. | tur |
| B. | Soybean |
| C. | Peas |
| D. | gram |
| Answer» C. Peas | |
| 49. |
From which part of the plant is coffee obtained? |
| A. | from the roots |
| B. | from leaves |
| C. | from seeds |
| D. | from fruits |
| Answer» B. from leaves | |
| 50. |
From where is turpentine oil obtained? |
| A. | from cedar |
| B. | from pine |
| C. | from micham |
| D. | from netum |
| Answer» C. from micham | |