Annual ryegrass releases a chemical through its roots that suppresses the germination of which seeds?
Correct answer C. Both A and B
Subject / 2,686 questions
Agriculture MCQs
Page 133 of Agriculture multiple-choice questions with answers. Tap an option to check yourself.
Page 133 of 135
Allelopathic compounds released by plants mainly inhibit which stage of the plant life cycle?
Correct answer C. Seed germination
What is growing only one crop a year, where water is available only seasonally, called?
Correct answer A. Monocropping
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What type of disease is root rot of cotton?
Correct answer B. Fungal disease
What is the main cause of flower shedding in cotton?
Correct answer C. High temperature
The Indus is one of Asia’s longest rivers. Roughly how long is it?
Correct answer A. 2900 km
What is the prescribed germination percentage for foundation seed of groundnut?
Correct answer A. 85
What are seeds called that can be dried to low moisture and stored at low temperature without losing viability?
Correct answer D. Orthodox seeds
For which class of seed is certification not required?
Correct answer A. Breeder seed
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Where is the Barani Agricultural Research Institute located?
Correct answer C. Chakwal
Which statement gives the best definition of a fruit?
Correct answer B. A fruit is a mature ovary that contains seeds
What term describes the harmful effect of one living plant on another through the release of toxic chemicals?
Correct answer C. Allelopathy
What is the wearing away of the land surface by wind, water, ice or other geological agents called?
Correct answer C. Erosion
What is the ratio of the area actually cultivated in a year to the total farm area called?
Correct answer B. Cropping intensity
What is the removal of off-type plants from a crop field called?
Correct answer C. Roguing
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What is the term for two or more species living together in a long-lasting, intimate ecological relationship?
Correct answer A. Symbiosis
Which weedicide kills the foliage of weeds by direct contact?
Correct answer A. Paraquat
What is the soil water called that exceeds hygroscopic and capillary water and drains downwards under gravity?
Correct answer A. Gravitational water
What is the application of fertiliser nutrients in proportions best suited to a crop’s needs called?
Correct answer D. Balanced fertilisation
What is the total dry matter a plant produces through photosynthesis called?
Correct answer B. Biological yield