Agronomy MCQ Question and Answer | Agriculture MCQ Question

Answer: Option B

Downy mildew which is also known as 'Green Ear' is one of the destructive diseases of foliage like Bajra which is caused by fungus. The specific fungal organism responsible for its cause is Sclerospora graminicola. It is a soil-borne disease but spread through airborne spores of the fungus. Wet leaves in humid weather act as the most favorable spot for its infection.

Answer: Option B

Essential nutrients are those that any organism is unable to produce within itself and need from outer environmental sources for its proper functioning of biochemical pathways. But there are some basic criteria to make any element essential for any plant type and these criteria were proposed by Arnon and Stout in 1939. And according to them, there are 16 elements essential for the proper growth and development of the plant.

Answer: Option A

ICRISAT is the intergovernmental organization that stands for International Crop Research Institute for the Semi-Arid Tropics and was formed in the year 1972. It is headquartered in Patancheru, Hyderabad (Telangana), and works under the parent organization CGAIR (Consultative Group for International Agricultural Research). Its mission is to reduce poverty, hunger, malnutrition, and environmental degradation in the drylands.

Answer: Option B

Plants produce carbohydrates i.e. their food and energy in green leaves by the process of photosynthesis which is transported by the phloem tissues to all parts of the plant but the main element which is essential for its translocation is Boron. Boron plays a vital role in plant metabolic activities.

Answer: Option C

Trichoderma viridiae is a type of fungus that can block the life cycle of many pathogens and most specifically various other fungi that is the reason which makes it an amazing biological control agent against various pathogens that leads to its exploitation on a commercial level. It is a free-living fungus that grows mainly on the roots area of the plant present in the soil, it enhances the fertility of the soil, boosts plant growth and protects the plants from various pathogens.