Horticulture MCQ Question and Answer | Agriculture MCQ Question

Sel No. 29 is a tropical type carrot cultivar.
Based on temperature requirements, carrots are classified as temperate or European and tropical or Asiatic. The tropical cultivars do not require any low-temperature treatment for flowering. They produce flowers and seeds on plains of high temperature.
Sel no. 29 is developed by PAU, Ludhiana. This is one of the quick-growing varieties. Carrots of this variety are light red in colour with long tapering roots. An average yield of 80 to 100 quintals of the crop is obtained per acre of land.

Gibberellin is the growth regulator which is the substitute for low chilling treatment.
Gibberellin is a hormone that replaces vernalization. Vernalisation is the process by which plants use a prolonged cold period in winter to promote flowering.
Gibberellin (GA) is the key plant hormone involved in regulating plant development. Thus, it is critical to elucidate the mechanism of the molecular regulation of vernalization and floral bud initiation to prevent premature bolting by the application of this hormone.

Running water, high protection wall, terminal building and Baradari are important parts of the Mughal Garden.
Mughal gardens are a type of garden built by the Mughals. This style was influenced by the Persian gardens. Fountain and running water was key feature of Mughal garden design. The garden might include a raised hillock at the centre, reminiscent of the mountain at the centre of the universe in cosmological descriptions and often surmounted by a pavilion or palace.
Important examples of this architecture are the Taj Mahal, Charbagh, etc.

Black corianth is a parthenocarpic variety of grapes used for making jams.
Black Corinth is one of the varieties of grapes, in this pollination and fertilization take place but the embryo gets aborted subsequently resulting in seedlessness. This phenomenon of development of seedless fruits is referred to as ‘parthenocarpy’.
The seedlessness or parthenocarpic fruits are advantageous since there is a greater preference among the consumers for seedless fruits and especially for making jams.

Slaughter tapping is done in rubber before replacing the plantation.
Slaughter tapping is an obsolete method of extracting large quantities of natural latex from rubber trees in a forest environment.
The term slaughter tapping is used to indicate all-out bleeding of rubber trees to obtain maximum yield without regard to the health or longevity of trees. It is done one or two years before replanting or replacing the crop.

Stenospermocarpy is the type of parthenocarpy in the Sindhu variety of mangoes.
Stenospermocarpy is the production of abortive incompletely developed seeds and is caused when the trees of mango are exposed to low temperatures during the flowering period, interfering with the pollination and fertilization of the fruit.
Sindhu is a parthenocarpic seedless variety, that possesses a very thin stone and good quality fruit.

Onion bulbs are stored well at 0° to 1°C.
In cold storage onions are stored in the temperature range between 0° to 1°C. under this low-temperature condition onions will not respire, thus there will be the least loss of water, keeping them fresh for a long period.
On top of this, between 0° and 4° Celsius, onions can be kept healthy and suitable for storage for up to 12 months.

Central Temperate Horticulture Research Institute is situated in Srinagar.
It is a premier institute with the main campus at Srinagar and one regional station at Mukteshwar for carrying out basic strategic and applied research on major temperate horticultural crops.
The institute is involved in the generation of basic information and identification of high-yielding varieties and hybrids. The institute was established to act as the national repository of germplasm and scientific information on temperate horticultural crops.
A major objective of the institute is to develop eco-friendly disease/pest management techniques including mitigation of post-harvest spoilage to increase foreign exchange earnings through export and to reduce the import of items.

The best method of vegetative propagation in Aonla is Patch budding. Patch budding is an easy grafting technique that can be used to either replace or add a new fruit variety to an existing tree.
A budding operation is performed on one-year-old aonla rootstock. In this method, a rectangular patch of bark is removed completely from the rootstock (25 mm long and 10 - 15 mm wide) and replaced with a patch of the bark of the same size containing a bud of the desired cultivar (scion).

The commonly used preservative in tomato ketchup is Benzoic acid.
Benzoic acid, the simplest benzene-based carboxylic acid, has been known since the 16^th century. Its most common natural source is gum benzoin, a resin found in the bark of trees of the genus Styrax.
It is a commonly used antimicrobial preservative in food and beverages, especially in carbonated beverages, as it presents its strongest antibacterial activity at pH 2.5 - 4.0. BA has inhibitory effects on the proliferation of bacteria and yeasts, a major cause of food spoilage.
The concentration of benzoic acid in ketchup varied from 98.5 to 1284 mg kg^-1, with a mean value of 482 mg kg^-1.