Agronomy - Study Mode

[#726] In the following, . . . . . . . . protein has highest Biological Value.
Correct Answer

(A) Rice

Explanation

Solution: Rice proteins have higher levels of amino acid methionine than most other plant sources like wheat, maize, etc. Brown rice is also rich in leucine with sufficient levels to promote hypertrophy. A biological value of a food refers to a high supply of essential amino acids.

[#727] Hybrid rice for commercial production was first evolved in
Correct Answer

(B) China

Explanation

Solution: Chinese scientist Yuan Longping is renowned as the 'Father of Hybrid Rice. He made his seminal discovery of the genetic basis of heterosis in rice. The first hybrid rice was released for commercial cultivation in 1974 AD. This is the first time hybrid rice varieties were used for large scale plating.

[#728] Chemical formulae of Thiourea is
Correct Answer

(A) NH 2 -CS-NH 2

Explanation

Solution: Thiourea is an Organic Sulphur compound similar to urea where the oxygen atom is replaced by a Sulphur atom. It can also be called a Sulphur analog of Urea, chemically also known as thiocarbamide. Its chemical formula is NH 2 -CS-NH 2 . It acts as an important bioregulator for the growth and development of crop plants. Exogenous application boosts the growth and productivity of plants under normal as well as stressful conditions.

[#729] Deficiency symptoms on lower leaves are due to
Correct Answer

(D) P 2 O 5

Explanation

Solution: Deficiency symptoms on lower leaves are due to deficiency of phosphate i.e. P 2 O 5 . P 2 O 5 is triple superphosphate, a concentrated form of superphosphate and it contains 46% of P 2 O 5 . The deficiency of phosphorus tends to inhibit or prevent shoot growth. Leaves turn dark, dull, blue-green and may become pale in severe deficiency. At first, the old leaves from the lower parts are affected but they may be translocated to the younger leaves also.

[#730] Among the oil seed crops mostly used food oil in India is
Correct Answer

(B) Groundnut

Explanation

Solution: Groundnut oil is the most used food oil in India. It is the naturally processed oil made from extracting groundnuts through a cold squeezing process. It promotes a healthier lifestyle and improves the flavours of the food with a multitude of benefits and is rich in required nutrients.