Horticulture MCQ Question and Answer | Agriculture MCQ Question

Climacteric fruits and vegetables are the fruits that will be ripe after being picked up. It can also be defined as the stage of fruit ripening with increased ethylene production as the increase of respiration in cells.
Some examples of such fruits and vegetables are Apples, bananas, melons, apricots and tomatoes.
Muskmelon is also a climacteric vegetable among the given options.

Aonla is the fruit from the following options that contain the highest amount of ascorbic acid.
The Vitamin C content of its expressed juice is 921 mg/100 cc, twenty times more than that of other citrus fruits. 100 grams of fresh fruit contains 470 to 680 mg of vitamin C.
The fruit is a good source of vitamin C. The fruit is having medicinal value. Aonla is used in indigenous medicines like trifla and chavanprash. Fruits are commonly used for preserving, pickles, candy, jelly and jam. Besides fruits, leaves, bark and even seeds are being used for various purposes.

Ideal conditions for storing onions are 0°C and 70% RH.
Storage of onion bulbs in a cold store with optimum relative humidity extends the shelf life of onion bulbs and reduces post-harvest storage losses. The optimal storage temperature in cold storage is 0°C with 65 - 70% relative humidity. Under these conditions, the storage losses after six months are only about 5% which is mainly due to moisture loss. Regular monitoring of both temperature and relative humidity in the store is necessary to avoid significant fluctuations in environmental conditions.

For getting the optimum plant population of chili, the seeds required will be 1.5 - 2.0 kg/ha.
Chilli is a plant of tropical and subtropical regions. It grows well in warm and humid climates and has a temperature of 20 - 30 QC. As a rainfed crop, it is grown in areas receiving an annual rainfall of 75 - 100 cm.
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 a seed rate for that crop of the land.
It also depends on the quality of seed, soil and climate of that area.

A dwarf rootstock of apples is M-9 (Malus).
Dwarfing rootstocks produce the smallest trees and range from 6 feet tall to 12 to 14 feet tall.
The malus M-9 are widely used rootstocks for high-density orchards on fertile grounds. Trees grown on this very important dwarf apple rootstock are relatively small in height. A support system, and stakes, are required. First apple production from fruit trees on M-9 can be expected in the second year after planting.

First earthing in potatoes should be done 30 - 35 days after planting to provide optimum space for tuberization.
The main object of earthing up is to keep the soil loose and destroy weeds. Two or three earthing up should be done at an interval of 15 - 20 days. The first earthing-up should be done when the plants are about 15 - 25 cm high. The second earthing up is often done to cover up the tubers properly.

The harvesting stage for date palm grown in India is DOKA.
Four to five years after plantation, date palm trees are ready for the first harvest. Fruits are harvested at three stages, Khalal or Doka stage (fresh fruits), soft or ripen stage (pind or Tamar), and dry stage (chuhhara).
The Doka stage is 13 - 17 weeks after pollination. The fruit is Hard, yellow pink or red and may be sweet or astringent.

Commonly used refrigerant in India is Ammonia.
Ammonia has become the obvious choice for India as a natural refrigerant as it is the most energy efficient having zero global warming potential and zeroes ozone depletion potential.
Ammonia is the most environmentally friendly refrigerant. It belongs to the group of so-called "natural" refrigerants, and it has both GWP (Global Warming Potential) and ODP (Ozone Depletion Potential) equal to zero.

Tijarti is a F₁ hybrid of Bittergourd.
Bitter gourd (Momordica charantia) is an important vegetable crop and is grown for its immature tuberculate fruits which have a unique bitter taste. Fruits are considered a rich source of vitamins and minerals and 88 mg of vitamin C per 100 g.
Tijarti is a hybrid that has an excellent combination of good vigor and earliness. Fruits are medium long with moderate but rather thick spines, which result in less damage during transport. The Colour is attractive dark green. Because of its enormously high yield potential.

Immature pods of criollo cocoa are Red coloured. The unripe pod is usually red.
Criollo is a very rare and precious variety of cacao that was at risk of extinction for many years. It is the cocoa of the Mayas and the Aztecs, the cultivation of which has been progressively abandoned owing to its low yield. It is delicate cocoa and makes up just 0.01% of global cocoa production.
Cocoa beans are the almond-shaped seeds inside the fruit of the cacao tree, which is called a pod. As we'll see, it's an essential raw ingredient in the chocolate production chain.