Horticulture MCQ Question and Answer | Agriculture MCQ Question

Grape, jack fruit, and Pomegranate are fruit plants that bear fruits twice a year.
In North India, grape orchards bear two crops in a year resulting in exceptionally high yield, however, the fruit quality is not so good.
Jackfruit bears fruit during summer as well as during November-December. A mature jack tree produces some 200 fruits per year, with older trees bearing up to 500 fruits in a year.
The pomegranate produces fruit at the end of new growth. Judicious pruning annually for the first three years will produce bushy plants with abundant new growth each year.

The chilling requirement for cabbage is 4° - 10°C for 6 - 8 weeks.
The chilling requirement of a fruit is the minimum period of cold weather after which a fruit-bearing tree will blossom. A chilling unit in agriculture is a metric of a plant's exposure to chilling temperatures.
The seed production of cabbage is only possible under temperate conditions of Jammu where chilling requirements range from 4 - 10°C for 8 - 10 weeks after head formation prevails.

Pre-emergence of seed stalks before the time of their formation at the cost of bulb formation and development in onion is known as Bolting.
It is a serious disorder of onion. It refers to the emergence of seed stalks before the time of their formation and adversely affects the formation and development of bulbs. Bolting is an undesirable character because it directly affects the bulb yield of onion.

A hedge row planting system is best suited for mechanized fruit cultivation.
Hedgerow intercropping, also known as alley cropping, consists of growing one/two rows of perennials trees or shrubs (preferably leguminous) at a close spacing in the form of hedges. These hedges are spaced 4 - 8 m, and crops are grown simultaneously in between the hedgerows.
Hedgerows are useful to prevent animals from straying, protect crops from wind and prevent soil erosion, also define the visual boundaries of the farm property. And at the same time, it is best suited for mechanized fruit cultivation.

There is a total of six national Bureau in India, and these are:
1. ICAR- National Bureau of plant genetics Resources, New Delhi.
2. ICAR- National Bureau of Agriculturally Important Micro-organisms, Mau, Uttar Pradesh.
3. ICAR- National Bureau of Agricultural Insect Resources, Bengaluru.
4. ICAR- National Bureau of Soil Survey and Land use planning, Nagpur
5. ICAR- National Bureau of Animal Genetic Resources, Karnal.
6. ICAR- National Bureau of Fish Genetic Resources, Lucknow.

The plant growth hormone which helps in enlarging the grapefruit is Gibberellic acid. In grapes, gibberellins are produced in the developing embryos and cause the berries to enlarge.
Gibberellic acid is a synthetic plant growth regulator. It is often used to obtain enlarged table grape berries and induce seedlessness in them. However, the effects of GA₃ on rachis elongation and bunch compactness in wine-grape production.

The best-suited variety for green ginger is Himgiri.
Ginger is always propagated vegetatively and the number of clones is limited. The clones differ in their size, the fibre and moisture content of the rhizomes and also in yield. The cultivars are usually named after the areas where they are cultivated.
Himgiri variety is the best for green ginger, it is less susceptible to rhizome-rot disease. It is suitable for rain-fed conditions. And is mostly cultivated in Himachal Pradesh.

Vitamin K is called a coagulating vitamin.
"Vitamin K," the generic name for a family of compounds with a common chemical structure of 2-methyl-1,4-naphthoquinone, is a fat-soluble vitamin that is naturally present in some foods and is available as a dietary supplement.
The name vitamin K comes from the German word "Koagulations vitamin".
Vitamin K is an essential vitamin needed by the body for blood clotting, bone-building, and other important processes. It's found in leafy green vegetables, broccoli and Brussels sprouts.

According to ISI, the tomato has been specialized into 4 grades.
Grading in tomatoes is referred to as the categorization of the fruits based on the colour, size, stage of maturity/degree of ripening, etc. it can be done manually or mechanically by machines. Retailers normally do size grading for the local market.
However, based on the size of the fruits three grades are formed: small (< 100 g), medium (100 - 255 g) and large (> 255 g).
BIS has specified 4 grades that are Super A, Super, Fancy and commercial.

The cold hardy citrus rootstock is Trifoliate orange.
The trifoliate orange, also known as trifoliate lemon and Poncirus, is extremely hardy, surviving in areas colder than USDA Zone 6. It can tolerate moderate frost and snow, making a large shrub or small tree 4 - 8 m tall. It is a common rootstock. This small fruit is very seedy and bitter.