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 of the following is not an essential macro-element for the growth of plants [CPMT 1999] |
| A. | N |
| B. | Zn |
| C. | Ca |
| D. | K |
| Answer» D. K | |
| 2. |
Which one is not related with plant ash [MP PMT 1997] |
| A. | Trace elements |
| B. | Essential elements |
| C. | Nitrogen |
| D. | Mineral elements |
| Answer» D. Mineral elements | |
| 3. |
If chlorophyll is burnt, what element will be left [CPMT 1986, 87, 95] |
| A. | Fe |
| B. | Na |
| C. | Mg |
| D. | Mn |
| Answer» D. Mn | |
| 4. |
Which of the following is not macro-nutrient [CPMT 1996] |
| A. | C |
| B. | P |
| C. | S |
| D. | Zn |
| Answer» E. | |
| 5. |
The constant pH of body fluid is maintained by buffer salts like [CPMT 1989] |
| A. | Potassium phosphates |
| B. | Sodium phosphates |
| C. | Adenosine monophosphate |
| D. | Sodium and potassium phosphates |
| Answer» E. | |
| 6. |
Interveinal chlorosis of leaves is caused by the deficiency of [Kashmir MEE 1995] |
| A. | Nitrogen |
| B. | Calcium |
| C. | Potassium |
| D. | Magnesium |
| Answer» E. | |
| 7. |
Rapid deterioration of root and shoot tip occurs due to the deficiency of [MP PMT 1988] |
| A. | Calcium |
| B. | Phosphorus |
| C. | Nitrogen |
| D. | Carbon |
| Answer» B. Phosphorus | |
| 8. |
Plants requiring two metallic compounds (minerals) for chlorophyll synthesis, are [MP PMT 1989, 90; AIIMS 1980, 86; CPMT 1977, 94; BHU 1979] |
| A. | Fe and Ca |
| B. | Fe and Mg |
| C. | Cu and Ca |
| D. | Ca and K |
| Answer» C. Cu and Ca | |
| 9. |
In calcium deficient plants, meristematic regions of the stem and root tips are greatly affected and chlorosis of the margins of young leaves takes place. These symptoms eventually lead to the death of leaf, stem and root apices. These observations are related to the role of calcium in plant growth as it is |
| A. | A constituent element of chlorophyll |
| B. | Required for the formation of the middle lamella |
| C. | Involved in the synthesis of chloroplast proteins |
| D. | Involved in the hydration and permeability of cells |
| Answer» C. Involved in the synthesis of chloroplast proteins | |
| 10. |
Which of the following is a macro nutrient [CPMT 1994] |
| A. | Ca and Mg |
| B. | Mo |
| C. | Mn |
| D. | Zn |
| Answer» B. Mo | |
| 11. |
Calcium gets accumulated in |
| A. | Differentiating tissues |
| B. | Older leaves |
| C. | Buds |
| D. | Young tissues |
| Answer» C. Buds | |
| 12. |
Premature leaf fall is caused due to the deficiency of |
| A. | Molybdenum |
| B. | Sulphur |
| C. | Sodium |
| D. | Phosphorus |
| Answer» E. | |
| 13. |
Mg and Fe are required by the plants for the |
| A. | Energy transfer concerned with photosynthesis |
| B. | Synthesis of chlorophyll pigments in leaves |
| C. | Mechanism of stomatal opening and closing |
| D. | Translocation of carbohydrates from the leaf to the stem |
| Answer» C. Mechanism of stomatal opening and closing | |
| 14. |
The mineral constituent of the cell wall is |
| A. | Iron |
| B. | Magnesium |
| C. | Potassium |
| D. | Calcium |
| Answer» E. | |
| 15. |
The major role of phosphorus in plant metabolism is [DPMT 1986; MP PMT 1994] |
| A. | To generate metabolic energy |
| B. | To evolve oxygen during photosynthesis |
| C. | To evolve carbon dioxide during respiration |
| D. | To create anaerobic conditions |
| Answer» B. To evolve oxygen during photosynthesis | |
| 16. |
The chlorophyll is not formed without |
| A. | Potassium |
| B. | Magnesium |
| C. | Calcium |
| D. | Phosphorus |
| Answer» C. Calcium | |
| 17. |
Sinigrin pungent principle of mustard is due to [BHU 1989] |
| A. | Alkyloids containing cyanide radicle |
| B. | Glycoside containing sulphur |
| C. | Glycoside containing amino group |
| D. | Tannins containing nitrogen |
| Answer» C. Glycoside containing amino group | |
| 18. |
Essential macroelements are [MP PMT 1993] |
| A. | Absorbed from soil |
| B. | Manufactured during photosynthesis |
| C. | Produced by enzymes |
| D. | Produced by growth hormones |
| Answer» B. Manufactured during photosynthesis | |
| 19. |
Presence of phosphorus in a plant [CPMT 1991] |
| A. | Brings about healthy root growth |
| B. | Promotes fruit ripening |
| C. | Retards protein formation |
| D. | None of the above |
| Answer» B. Promotes fruit ripening | |
| 20. |
Which of the following is not a macro-nutrient [CPMT 1994] |
| A. | Mn |
| B. | Ca |
| C. | Mg |
| D. | Phosphorus |
| Answer» B. Ca | |
| 21. |
Absence of\[M{{g}^{++}}\]ions from plants tissue results in [CPMT 1991] |
| A. | Plasmolysis |
| B. | Hydrolysis |
| C. | Chlorosis |
| D. | Necrosis |
| Answer» D. Necrosis | |
| 22. |
Frame work elements in plants are [CPMT 1985] |
| A. | Magnesium, copper and iron |
| B. | Copper, carbon and oxygen |
| C. | Manganese, calcium and nitrogen |
| D. | Carbon, hydrogen and oxygen |
| Answer» E. | |
| 23. |
Which one is inorganic nutrient [DPMT 1986] |
| A. | Protein |
| B. | Calcium |
| C. | Cellulose |
| D. | Vitamin |
| Answer» C. Cellulose | |
| 24. |
The cause of special flavour in onion and garlic is due to the presence of |
| A. | Sulphur |
| B. | Phosphorus |
| C. | Potassium |
| D. | Nitrogen |
| Answer» B. Phosphorus | |
| 25. |
Yellowing of tea leaf takes place by the deficiency of |
| A. | Chlorine |
| B. | Potassium |
| C. | Oxygen |
| D. | Sulphur |
| Answer» E. | |
| 26. |
Which of the following is considered to be the elements between macro-nutrients and micro-nutrients |
| A. | Iron |
| B. | Nitrogen |
| C. | Phosphorus |
| D. | Manganese |
| Answer» B. Nitrogen | |
| 27. |
Death of stem and root tips occur due to deficiency of [MP PMT 1988; DPMT 2004] |
| A. | Phosphorus |
| B. | Calcium |
| C. | Nitrogen |
| D. | Carbon |
| Answer» C. Nitrogen | |
| 28. |
Phosphorus works as carrier of |
| A. | Cobalt |
| B. | Zinc |
| C. | Magnesium |
| D. | Copper |
| Answer» D. Copper | |
| 29. |
Magnesium is mainly present in the form of |
| A. | Citrate |
| B. | Bicarbonate |
| C. | Carbonate |
| D. | Phosphate |
| Answer» D. Phosphate | |
| 30. |
Deficiency of which of the following element cause weakening of pedicel and petiole |
| A. | Magnesium |
| B. | Zinc |
| C. | Nitrogen |
| D. | Calcium |
| Answer» E. | |
| 31. |
Which of the following is required for binding protein with nucleic acid |
| A. | Nickel |
| B. | Iron |
| C. | Cobalt |
| D. | Calcium |
| Answer» E. | |
| 32. |
Cabbage plant absorbs phosphorus from |
| A. | Dry soil |
| B. | Water irrigated soil |
| C. | From phosphate rocks |
| D. | None of these |
| Answer» C. From phosphate rocks | |
| 33. |
In plants sulphur is found as |
| A. | Fast moving |
| B. | Moving |
| C. | About non-moving |
| D. | None of the above |
| Answer» D. None of the above | |
| 34. |
In maize grains the percentage of sulphur is |
| A. | 93 |
| B. | 68 |
| C. | 59 |
| D. | 26 |
| Answer» E. | |
| 35. |
Which of the following is not absorbed through soil |
| A. | Carbon |
| B. | Nitrogen |
| C. | Potassium |
| D. | All the above |
| Answer» B. Nitrogen | |
| 36. |
Calcium can effect |
| A. | Permeability of plasma membrane |
| B. | Hydration of colloids |
| C. | Translocation of carbohydrates and amino acids |
| D. | Development of root |
| Answer» B. Hydration of colloids | |
| 37. |
Which element forms part of structure of chlorophyll molecule [CPMT 1979, 81, 90; MP PMT 1995; CBSE PMT 2003] |
| A. | Fe |
| B. | Mg |
| C. | K |
| D. | Mn |
| Answer» C. K | |
| 38. |
Which of the following is a component of middle lamella |
| A. | Zinc |
| B. | Boron |
| C. | Calcium |
| D. | Phosphorus |
| Answer» D. Phosphorus | |
| 39. |
In darkness the stomata close because |
| A. | Potassium deposits in the guard cells |
| B. | Guard cells loose potassium |
| C. | Starch is converted into sugar |
| D. | None of these |
| Answer» C. Starch is converted into sugar | |
| 40. |
Green plants use the sulphur in the form of |
| A. | Pure form |
| B. | As sulphates |
| C. | As sulphite |
| D. | All the above |
| Answer» C. As sulphite | |
| 41. |
By the use of sulphur |
| A. | Development of root is normal |
| B. | Root development is reduced |
| C. | Root development is increased |
| D. | Root dry |
| Answer» D. Root dry | |
| 42. |
In guard cells, presence of potassium is essential for |
| A. | Maintaining osmotic pressure |
| B. | In controlling cell division |
| C. | In enzymatic reactions |
| D. | All the above |
| Answer» B. In controlling cell division | |
| 43. |
Which of the element is not essential for plant growth |
| A. | Nitrogen |
| B. | Sulphur |
| C. | Sodium |
| D. | Potassium |
| Answer» D. Potassium | |
| 44. |
With reference to soil critical element means |
| A. | Nitrogen and phosphorus |
| B. | Nitrogen and potassium |
| C. | Potassium and chlorine |
| D. | Nitrogen, phosphorus and potassium |
| Answer» E. | |
| 45. |
Which of the following does NPK denote [MP PMT 1990] |
| A. | Nitrogen, potassium, kinetin |
| B. | Nitrogen, protein, kinetin |
| C. | Nitrogen, protein, potassium |
| D. | Nitrogen, phosphorus, potassium |
| Answer» E. | |
| 46. |
In nature, organic compounds invariably contain [MP PMT 1996] |
| A. | Carbon |
| B. | Phosphorus |
| C. | Sulphur |
| D. | Magnesium |
| Answer» B. Phosphorus | |
| 47. |
The possible resource of phosphorus ions and nitrogen ions in soil generally get depleted because they are usually found as [CBSE PMT 1989, 94] |
| A. | Positively charged ions |
| B. | Negatively charged ions |
| C. | A disproportionate mixture of negatively charged ions |
| D. | Particles carrying no charge |
| Answer» C. A disproportionate mixture of negatively charged ions | |
| 48. |
Carbon become available to crop plants in the form of [CPMT 1972, 81] |
| A. | Amino acids |
| B. | Carbonates |
| C. | Carbon dioxide |
| D. | Element carbon |
| Answer» D. Element carbon | |
| 49. |
Lysosomes are so called because these contain [MP PMT 1994] |
| A. | Carboxylating enzymes |
| B. | Respiratory enzymes |
| C. | Oxidizing enzymes |
| D. | Digestive enzymes |
| Answer» E. | |
| 50. |
Match List I and List II and select the correct answer using the code given below the list : List I List II a. Lysosome 1. Bacteria without cell walls b. Mycoplasma 2. A virus that infects bacterial cells c. Thylakoid 3. Flattened sacs in a chloroplast d. Bacteriophage 4. A vesicle in which hydrolytic enzymes are stored Code : [MP PMT 1993] |
| A. | a b c d 3 1 2 4 |
| B. | a b c d 4 1 3 2 |
| C. | a b c d 2 3 4 1 |
| D. | a b c d 1 4 2 3 |
| Answer» C. a b c d 2 3 4 1 | |