The total length of Pakistan’s canal system is more than how many kilometres?
Correct answer A. 58,000 km
Topic / 300 questions
Agronomy MCQs
Page 12 of Agronomy multiple-choice questions with answers. Tap an option to check yourself.
Page 12 of 15
What term describes the number of crops grown on the same land in a year, expressed as a percentage?
Correct answer B. Cropping index
What is the movement of a substance across a biological membrane against its concentration gradient called?
Correct answer C. Active transport
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What is the pest control approach called that uses natural predators and parasites without serious harmful effects on the environment?
Correct answer C. IPM
Who suggested the use of tetrazolium staining to assess seed quality?
Correct answer B. Moore (1973)
What is the progeny of nucleus seed called?
Correct answer C. Breeder seed
Watercourses are lined in order to prevent what?
Correct answer B. Seepage
What kind of stem do herbaceous plants have?
Correct answer B. Non-woody stem
Which soil is best suited to growing cotton?
Correct answer C. Clay loam soil
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What are crops grown for their grain called?
Correct answer D. Cereal crops
What is the condition in which green plants become unhealthy and pale yellow in colour called?
Correct answer C. Chlorosis
What is it called when more than one crop is grown on the same land in a season?
Correct answer A. Intensive cropping
How is wheat predominantly pollinated?
Correct answer C. Self-pollinated crop
By how much can weed infestation reduce rice yields?
Correct answer A. 20-60%
Dwarf wheat varieties show greater resistance to what?
Correct answer B. Lodging
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What is the main cause of heavy fruit shedding in cotton plants?
Correct answer A. Higher temperature
What are organisms called that cannot make their own food and feed on dead organic matter?
Correct answer B. Saprophytes
What is it called when crop plants adapt to a new environment?
Correct answer A. Acclimatisation
What are plants called that switch from vegetative growth to flowering and fruiting when days become longer?
Correct answer B. Long day plants
What is the process by which plants produce carbohydrates called?
Correct answer C. Photosynthesis