Horticulture MCQ Question and Answer | Agriculture MCQ Question

Apricot is a sweet and delicious fruit. Apricots are one of those kinds which are self-fruitful, meaning they don't need any pollination partner. Apricot trees require 600 to 900 cool hours every year at a temperature of 0 to 8 degree celcius.
Low chilling variety of apricot is New Castle.
"New castle" produces a rounded, medium to large yellow-orange fruit with light green shoulders. Its flesh is orange, soft and juicy. It is an early harvest, freestone variety that is self-fertile.

Shoot and fruit borer of okra belongs to Earias vitella.
Larva bores into tender terminal shoots in the vegetative stage and flower buds, flowers and young fruits in the fruit formation stage. The damaged shoots droop, wither and dry up. The infested fruits present a deformed appearance and become unfit for consumption. Bore holes - plugged with excreta.
Okra shoot and fruit borer (OSFB) is considered to be the major insect pest of the crop, which interferes with its economic production in almost all okra growing countries.

Protogynous diuranally synchronous dichogamy is observed in Avocado.
The avocado flower has a unique flowering behaviour, in addition, the avocado flower has a very interesting bisexual quality in which the flower opens twice. First opening in the female stage, then closing and opening the next day in the male stage. This phenomenon is called protogynous, diurnally synchronous dichogamy.
The dichogamy is protogynous, as the pistil matures before the stamens in both types and all flowers of type A are synchronous to be functionally female at one time of the day and functionally male at anther time. The combination of protogynous dichogamy and the flowering behaviour of the avocado prevents self-pollination promoting outcrossing.

Pre-canning treatment of fruits and vegetables with boiling water for a short time is called Blanching.
Blanching is a cooking process in which a food, usually a vegetable or fruit, is scalded in boiling water, removed after a brief, timed interval and finally plunged into iced water or placed under cold running water (known as shocking or refreshing) to halt the cooking process. It increases the shelf life of the fruits and vegetables.

Cabbage is generally grown for its densely leaved heads, produced during the first year of its biennial cycle. Plants perform best when grown in well-drained soil in a location that receives full sun.
The native place of cabbage is Western Europe.
Cabbages and kale were probably the first to be domesticated, before 1000 BC, perhaps by the Celts of central and Western Europe although recent linguistic and genetic evidence enforces a Mediterranean origin of cultivated brassicas.

Isolation distance is the minimum separation required between two or more varieties of the same species for the purpose of keeping seed pure.
As a general rule, plants that primarily self-pollinate require less isolation distance, while plants that primarily cross-pollinate require greater distances.
Therefore None of the above options given is wrong as per the rule, that is the extent of natural cross-pollination is decreasing with decrease in distance.
When isolation distance is more that is 500 - 1000 meter, the extent of natural cross-pollination is maximum i.e. 50 - 75%.

Exhausting temperature of canned fruits and vegetables is 80 - 82°C.
Exhausting is the process of removal of air from the cans. It is very essential as it avoids the corrosion of tinplate and pinholing during the storage. Exhausting is done to minimize discoloration, to reduce chemical reaction between the container and the contents.
The fruit cans are exhausted at 80 - 82°C for 7 - 10 minutes or until temperature at the centre of the can reaches 74°C.

The book HORTISCIENCE is written by Jules Jennick.
This book is designed for the beginning horticultural student, Janick's book examines the scientific concepts upon which horticulture is based, viewing horticulture from the standpoints of biology, environment, technology and industry.

Most commonly used sugar in flower preservation solution is Sucrose.
Sugar mixed with water is an important component of cut flower preservation. Cut flowers require a certain amount of acidity in their water, as well as bacterial control if they are to thrive.
It has been concluded that 200 ppm 8-HQS combined with 2% sucrose solution has the potential to be used as a commercial cut flower preservative.

Blue lake is the cultivar of French bean.
Blue lake bean is botanically classified as Phaseolus vulgaris, belonging to Fabaceae family.
Blue Lake Bean is an heirloom variety that is one of the most-popular bush bean varieties grown by backyard gardeners. 5 - 6″ round pods that are excellent for eating fresh or canning.