MCQs Agronomy-58 Posted on September 22, 2025Author agropublishers 0 1. La Niña is a climatic phenomenon primarily characterized by _____________ Intensification of hurricane activity in the Atlantic basin Persistence of near-average sea surface temperatures in the Pacific Unusual cooling of sea surface temperatures in the central and eastern Pacific Unusual warming of sea surface temperatures in the central and eastern Pacific 2. ____________________ is considered as the primary driver of El Niño and La Niña events Strengthening or weakening of Pacific trade winds Fluctuations in atmospheric pressure across the Pacific (Southern Oscillation) Shifts in major ocean circulation patterns Variations in incoming solar radiation 3. Leguminous crops have a symbiotic relationship with___________ Bacteria Mycorrhizae Rhizobia Fungi 4. The intricate network of phytohormone interactions enables plants to generate specific and coordinated responses to multiple stresses, reflecting their _________ Inability to sense the environment Lack of adaptability Dependence on external chemicals Phenotypic plasticity 5. What is the primary characteristic of a climate with aridity? High humidity and cool temperatures Frequent heavy rainfall and flooding Abundant water supply throughout the year Precipitation is consistently lower than atmospheric water demand 6. In plants, what are the two major components of bark? Xylem and phloem Pith and vascular cambium Phloem and periderm Cortex and epidermis 7. What is the primary objective of the International Seed Federation Trade Rules? Regulate global agricultural subsidies Establish uniform global planting practices Harmonize international seed certification and trade standards Implement worldwide pesticide regulations 8. What is the typical impact of La Niña on the South Asian summer monsoon? No significant influence on rainfall patterns Suppression of rainfall across most regions Highly variable impact with no consistent trend Enhancement of rainfall over many regions 9. A_____________is a specific quantity of seed that is physically identifiable Seed lot Composite sample Submitted sample Working sample 10. The El Niño–Southern Oscillation (ENSO) events typically occur with a frequency of _________ Annually (every year) About every 10 years Every 2–7 years About every 20 years Loading … Question 1 of 10
