Horticulture - Study Mode

[#766] Dwarfing rootstock in mango is
Correct Answer

(A) Totapuri red small

Explanation

Solution: Dwarfing rootstock in mango is Totapuri red small . Dwarfing rootstocks produce the smallest trees and range from 6 feet tall to 12 to 14 feet tall. Mango is commonly propagated with unselected seedling rootstocks, which might be responsible for the variation in the performance of trees of the same clone in the orchard. The investigations were carried out with 31 different rootstocks comprising of own-rooted varieties-Dashehari, Langra, Chausa, Totapari Red Small, Neelum, Bombay Green, and the seedlings raised from open-pollinated seeds of the above varieties.

[#767] Copper sulphate is sprayed in roses for
Correct Answer

(B) Defoliation

Explanation

Solution: Copper sulphate is sprayed in roses for Defoliation. Defoliation is to deprive leaves especially prematurely by the attack of black spot fungus in roses. Thus copper sulphate antifungal is sprayed on the infected plants. The effect of such a copper sulphate fungicide is preventing fungal infections on healthy plant tissue or the reduction of active fungal infections that can disease or destroy the plant.

[#768] Allopolyploid variety reported in mango is
Correct Answer

(B) Vellai kolamban

Explanation

Solution: The allopolyploid variety reported in mango is Vellai kolamban . The tree of this variety is large and evergreen growing up to 45 m in height and 120 cm in bole diameter. The canopy is umbrella-shaped and spreading. The seeds are sources of starch and edible fat. Young leaves are cooked as a vegetable. An allopolyploid is an individual having two or more complete sets of chromosomes derived from different species.

[#769] Monoembryonic variety of lemon is
Correct Answer

(B) Meyer

Explanation

Solution: The monoembryonic variety of lemon is Meyer . Monoembryony is the emergence of one and only one seedling from a seed. Meyer lemon is a hybrid citrus fruit native to China. It is a cross between a citron and a mandarin/pomelo hybrid. The fruit is rounder than a true lemon, deep yellow with a slight orange tint when ripe and has a sweeter, less acidic flavour. The lemons contain a highly acidic pH of between 2 - 3. This acidity level allows for these lemons to be used as antibacterial and antiseptic cleaners.

[#770] Which one of the following fruits belongs to family Anacardiaceae
Correct Answer

(C) Cashewnut

Explanation

Solution: Cashewnut is the fruit among the given options that belongs to the family Anacardiaceae. The Anacardiaceae, commonly known as the cashew family or sumac family, is a family of flowering plants, including about 83 genera with about 860 known species. Members of the Anacardiaceae bear fruits that are drupes and in some cases produce urushiol, an irritant.