Horticulture - Study Mode

[#681] Which of the following crops is produced maximum in the world?
Correct Answer

(C) Potato

Explanation

Solution: Potato is the crop from the given options that are produced the maximum in the world. The potato is the third most important food crop in the world after rice and wheat in terms of human consumption. The estimated total world production for potatoes in 2020 was 35,90,71,403 metric tonnes, up 1.2% from 35,48,12,093 tonnes in 2019. China was the largest producer, accounting for 21.8% of world production, followed by India at 14.3%.

[#682] Separation of fermented wines from the residual solids is termed as
Correct Answer

(C) Racking

Explanation

Solution: The separation of fermented wines from the residual solids is termed Racking . The term racking means moving wine from one vessel to another. This can be from tank to barrel, barrel to barrel and barrel to the tank. Racking can be done to serve several different purposes. It is done for filtering or fining, which is the process of moving wine or beer from one container to another using gravity rather than a pump, which can be disruptive to the beverage.

[#683] Durian belong to the botanical family:
Correct Answer

(C) Bombaceae

Explanation

Solution: Durian belongs to the botanical family Bombaceae . It is the edible fruit of several tree species belonging to the genus Durio . Durian (Durio zibethinus), locally referred to as the “king of fruits” is a dicotyledonous tropical seasonal plant species belonging to the member of family Bombacaceae and the genus of Durio. Durio is often included in Bombacaceae because of the presence of monothecate anthers, as opposed to the bithecate anthers common to the rest of the mallows.

[#684] Predominant sex form in Cucumis melo is
Correct Answer

(A) Andromonoecious

Explanation

Solution: The predominant sex form in Cucumis melo is Andromonoecious . Cucumis melo is described as andromonoecious, producing two blossom types, namely, perfect (Hermaphrodite) and male (Staminate) flowers. It means having perfect and staminate flowers on the same plant. It is a breeding system in which individual plants produce both staminate (male) and perfect (hermaphrodite) flowers. It exists in both wind-pollinated and animal-pollinated taxa and is found in 1.7% of angiosperms.

[#685] 1 st transgenic crop plant was . . . . . . . . , developed in 1983.
Correct Answer

(D) Tobacco

Explanation

Solution: 1 st transgenic crop plant was tobacco developed in 1983. The first transgenic plants were produced in tobacco plants (Nicotiana tabacum) which expressed antibiotic resistance. L-phosphinothricin, a gene resistant to PPT, Basta (the active ingredient of herbicide) was isolated in Medicago sativa. In a transgenic plant, a segment of its DNA into the plant's nuclear DNA using a plasmid-integration system - one of the earliest discoveries of a natural DNA-transfer mechanism. In May 1983, the Van Montagu and Schell lab deployed this system as a gene-expression vector and the first transgenic plants.