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