Horticulture - Study Mode

[#821] The botanical name of radish is
Correct Answer

(B) Raphanus sativus

Explanation

Solution: The botanical name of radish is Raphanus sativus . Radishes are annual or biennial brassicaceous crops grown for their swollen tap roots which can be globular, tapering or cylindrical. The root skin colour ranges from white through pink, red, purple, yellow and green to black, but the flesh is usually white. Radishes are a fast-growing, annual, cool-season crop. The seed germinates in three to four days in moist conditions with soil temperatures between 18 and 29°C. Radishes grow best in full sun in light, sandy loams, with a soil pH of 6.5 to 7.0, but for late-season crops, a clayey loam is ideal.

[#822] Tentruier variety of grape in India is
Correct Answer

(C) Pusa Navrang

Explanation

Solution: Tentruier variety of grape in India is Pusa Navrang . This hybrid is a cross between Madeleine Angevine and Rubired and was released in 1996. It is an early ripening (1 st week of June), basal bearer and teinturier variety containing red pigment both in peel and pulp. The bunch is loose, medium in size with round and medium-sized berries with TSS ranging from 18 - 20%. It is ideally suited for coloured juice and winemaking and is resistant to anthracnose disease.

[#823] Which of the following preservative is used for preparation of tomato ketchup?
Correct Answer

(B) Sodium benzoate

Explanation

Solution: Sodium benzoate is the preservative is used for the preparation of tomato ketchup. Sodium benzoate is a preservative added to packaged foods and personal care products to prolong shelf life. It is an odourless, crystalline powder made by combining benzoic acid and sodium hydroxide. Benzoic acid is a good preservative on its own, and combining it with sodium hydroxide helps it dissolve in products.

[#824] Harvesting stage for watermelon is
Correct Answer

(D) Full slip stage

Explanation

Solution: The harvesting stage for watermelon is the full slip stage. The fruits when mature slip out easily from the vine with little pressure or jerk or if not they will remain separated from the vine the next day. This is called the full slip stage. In some Indian cultivars, green stripes on the skin begin to turn yellow which makes it easy to be harvested.

[#825] Hormone used for degreening of citrus fruits is
Correct Answer

(A) Ethylene

Explanation

Solution: The hormone used for degreening of citrus fruits is Ethylene . It accelerates fruit senescence and spoilage. Prolonged exposure of fruit to ethylene or its exposure to high doses during degreening induces physiological disorders and browning of the fruit peel. Citrus fruits are exposed from 1 - 3 days (depending on the degree of greening) to an atmosphere containing ethylene (5 - 10 ppm) under controlled ventilation, 20 - 26°C and 90 - 95% RH. Conditions for degreening are specific to the production area.