Horticulture - Study Mode

[#566] Plants which become dormant during summer are known as
Correct Answer

(C) Caducous

Explanation

Solution: Plants that become dormant during summer are known as Caducous . The caduceus is dropping off or shedding at an early stage of development, like the gills of most amphibians or the sepals or stipules of certain plants. Detaching or dropping off at an early stage of development. The gills of most amphibians and the sepals or stipules of certain plants are caducous.

[#567] Optimum seed rate of garlic (kg/ha) in terms of clove
Correct Answer

(C) 400 - 500

Explanation

Solution: The optimum seed rate of garlic (kg/ha) in terms of clove is 400 - 500 . Seed rate may be defined as the amount of seed required for a unit area of land to grow any crop successfully. In other words, the amount of seed required to raise a crop successfully on a given land is called the optimum seed rate for that crop of the land. Dip cloves in carbendazim solution (0.1%) just before planting to reduce the incidence of fungal diseases during establishment. The seed rate for garlic is 400 - 500 kg/ha. Selected cloves should be planted vertically 2 cm below the soil surface with a plant-to-plant spacing of 10 cm and row-to-row spacing of 15 cm.

[#568] Ploidy level in case of Persimmon is
Correct Answer

(C) Hexaploid

Explanation

Solution: Ploidy level in case of Persimmon is Hexaploid . The persimmon is the edible fruit of several species of trees in the genus Diospyros . Persimmon trees are typically dioecious, meaning male and female flowers are produced on separate trees. There are two races of persimmon: the tetraploid (60-chromosome) race is centered in the southern Appalachian region, while the hexaploid (90-chromosome) race generally occupies a range north and west of the tetraploid range.

[#569] In which crop the adventitious roots are present?
Correct Answer

(A) Sweet potato

Explanation

Solution: Sweet potato is the crop among the given options in which adventitious roots are present. Adventitious roots include those formed on stem and leaf cuttings and those produced by air layering. Adventitious aerial roots of many tropical trees are common. Adventitious roots are the ones that are modified to store food and water. They are also called root tubers. Sweet potato is a dicot plant from the family Convolvulaceae. It is an example of an adventitious root and is a modified form of the tuberous root.

[#570] Whip tail of cauliflower is caused by deficiency of
Correct Answer

(A) Mo

Explanation

Solution: The whip tail of cauliflower is caused by a deficiency of molybdenum. In this condition, the leaf blades do not develop properly and become strap-like. The growing point is severely deformed and no marketable curd is formed. This condition in cauliflower results because of the deficiency of molybdenum which occurs in acidic soils below 4 - 5 pH. It may be controlled by liming the soil which reduces the acidity and increases the soil pH up to 6.5. It may also be controlled by the application of 1 - 2 kg/ac of sodium or ammonium molybdate.