Agronomy MCQs

1.What is the typical pH value of pure natural water?

1497

2.From which sources do plants absorb their nutrients?

AtmosphereMoistureSoilAll of these

3.At what altitude are field crops typically grown?

4.What is the term used to describe the drying and drooping of plant parts caused by insufficient water?

Water deficiencyDry spellWiltingNot applicable

5.What are the effects of phosphorus deficiency in plants?

Roots fail to grow adequatelyDelayed plant maturationReduced flowering and fruit productionAll of the above

6.Which atmospheric layer is responsible for absorbing the sun's ultraviolet rays?

Stratosphere layerOzone layerOzosphere regionAll mentioned layers

7.What is the term used for organic material that has undergone partial decomposition?

HumusAnimal manureCompostAll of the above

8.Which of the following narcotic crops is predominantly cultivated in Pakistan?

PyrethrumCoconTobaccoCo see

9.What is the term for organic material that has undergone extensive decomposition?

CelluloseOrganic acidsHumusAll of the above

10.What is the term for growing the identical crop repeatedly on the same land each year?

Growing one crop per seasonMonocroppingPlanting two crops annuallyAll of these

11.What is the typical percentage of oxygen present in the Earth's atmosphere?

12.What is the approximate percentage of nitrogen present in the air?

70 percent nitrogenHalf of the air is nitrogenAbout 78 percent nitrogenNone of these

13.In seeds, increased leachate conductivity is most commonly associated with which characteristic?

Greater shoot biomassReduced shoot biomassIncreased root biomassNo correlation with these traits

14.Who was the first to propose using linear measurements of plumule growth as a method to assess seed vigour?

15.In which type of grains is electrolyte leakage observed to be higher?

16.Which factor is considered a potential method to improve productivity?

Seed qualitySeed quantitySeed planting densityAll of these

17.Which type of rice grains is most commonly associated with irregular seedling development?

18.What can cause unusual seedling development in rice plants?

Internal physiological processesCompromised seed cell structurePresence of natural growth inhibitorsAll of the above factors

19.At what temperature and duration is heat treatment effective in breaking the seed dormancy of nee seeds?

50°C for a period of 3 to 7 days45°C maintained for 3 to 8 days54°C applied for 2 to 6 daysNone of these choices

20.What is the term for the offspring derived from a nucleus seed?

Initial seedBreeder seedVerified seedRecorded seed