Agronomy - Study Mode
[#746] Soil structure is improved by application of
Correct Answer
(B) Super phosphate
Explanation
Solution: Soil structure is the way of assembling different particles of soil like soil, sand, clay and other particles. Adding compost and nutrient fertilizers can add texture and improves the structure of the soil. Super phosphate is a fertilizer that helps in the maintenance of soil structure by providing an insoluble matrix on which complexion assists to hold the soluble fertilizer constituents in place.
[#747] Mimosine is present in
Correct Answer
(A) Leucaena ssp.
Explanation
Solution: Mimosine is an amitotic agent and toxin present in Leguminous crops. It has a major effect on stopping hair growth. Leucaena is a multipurpose, ideal tree for growing on wastelands for fencing, soil fertility, firewood, fiber and livestock fodder. Its seeds are found to have a high content of mimosine toxin.
[#748] Potato belongs to the family
Correct Answer
(A) Solanaceae
Explanation
Solution: The potato belongs to the family Solanaceae. It is a family of flowering plants that range from annual and perennial herbs to vines, epiphytes, shrubs and trees. The name Solanaceae derives from the genus Solanum and it is also termed as Nightshade family.
[#749] The primary carboxylation in C4 plant takes place in
Correct Answer
(A) Mesophyll cells
Explanation
Solution: C4 plants show a higher efficiency of photosynthesis. The primary carboxylation in C4 plants takes place in the Chloroplast of mesophyll cells. PEP is the primary acceptor of carbon dioxide which combines with carbon dioxide which combines with carbon dioxide in the presence of PEPCase enzyme to form Oxaloacetate.
[#750] The recommended dose of N, P 2 O 5 and K 2 O kg/ha for wheat are
Correct Answer
(B) 120 - 40 - 0
Explanation
Solution: Every fertilizer is applied in a specified dose and specific interval of time duration or the stage of crop cultivation. The dose of Nitrogen (N), Super phosphate (P 2 O 5 ), and muriate of potash (K 2 O) is recommended to be around 140 - 40 - 0 respectively for wheat cultivation. Nitrogen is required in the maximum amount, it serves to promote tillering, enable photosynthesis, and build protein in the grain.