MCQs Agronomy [17] Posted on 2024-04-16Author admin 0 1. _____________ in 1909 developed an equation to describe the nutrient-yield relationship in crop plants J.W. Friedrich R.B. McKercher E.A. Mitscherlich V.J. Kilmer 2. _____ is an essential component of more than 80 metalloenzymes Iron Zinc Potassium Calcium 3. ________ ________________ in the clayey soil Nitrate (NO3 -) form of Nitrogen is relatively immobile Both Ammonium (NH4+) and Nitrate (NO3 -) forms of Nitrogen are relatively immobile Both Ammonium (NH4+) and Nitrate (NO3 -) forms of Nitrogen are highly mobile Ammonium (NH4+) form of Nitrogen is relatively immobile 4. Composting food waste and farm waste is an example of an organic farming practice that promotes _____________ Increased reliance on herbicides Increased reliance on fertilizer for decomposition Soil erosion Nutrient cycling 5. ____ is an essential macronutrient and fundamental building block of amino acids, which are then linked together to form proteins, essential for all living organisms. Phosphorous Potassium Zinc Nitrogen 6. The important component of the Green Revolution during the 1960s include the use of ____ Nitrogenous fertilizers Nitrogenous and Potassic fertilizers Phosphatic and Potassic fertilizers Nitrogenous and Phosphatic fertilizers 7. _____ is considered the father of the fertilizer industry Dov Gimenez Rattan Lal Justus von Liebig Carl Sprenge 8. In monoculture, lack of biodiversity in the cropland can make it more susceptible to_____________ Physical damage from wind and rain Crop failure due to pest and disease outbreaks Increased weed growth All of these 9. Weeds that resemble crops in appearance exhibit a type of ____ Agitation Crypsis Mimicry Masquerade 10. _____________ is the key soil bacteria responsible for converting ammonium (NH4+) to nitrite (NO2-) Azospirillum Azotobacter Nitrobacter Nitrosomonas 11. Considering soil _____ is a major disadvantage of monoculture farming Creation of suitable habitats for beneficial insects Increased nitrogen fixation Depletion of specific nutrients Improved water retention capacity 12. Which of the following is least critical for irrigation in wheat? Crown root initiation stage Flowering stage Tillering stage Seedling stage 13. Crop rotation, a vital component of organic farming, can help farmers to ____________ Decrease soil organic matter Deplete specific soil nutrients Disrupts pest and disease cycles associated with monoculture Increase reliance on synthetic fertilizers 14. __________of the following crops is generally not grown in dryland areas Ground nut Paddy Wheat Gram 15. Which of the following is a major source of natural fiber in Pakistan? Gossypium hirsutum Ovis aries Corchorus capsularis Bombyx mori 16. _______ is the process of removing excess soluble salts or exchangeable sodium from soil Stratification Reclamation Scarification Fertilization 17. _____________ is the key soil bacteria involved in nitrogen fixation Nitrobacter Acetobacter Azotobacter Nitrosomonas 18. _____________ is a free-living bacteria Azotobacter Azorhizobium Sinorhizobium Rhizobium 19. Availability of phosphorus to plants is maximum when pH is___________ 6.0-8.0 6.0-7.5 5.0-6.0 7.5-8.0 20. Which of the following plants lack the ability to form a symbiotic relationship with nitrogen-fixing bacteria? Phaseolus lunatus Phaseolus vulgaris Vigna angularis Solanum lycopersicum Loading … Question 1 of 20
