Horticulture MCQ Question and Answer | Agriculture MCQ Question

Chandra Shankara is a cross between COD × WCT.
Chandrasankara (COD × WCT) is a hybrid coconut variety. Hybrids are the intervarietal crosses of two morphological forms of coconut. They show earliness in flowering and give increased yield, higher quantity and better quality of copra and oil when compared to the parents.

Fruit follows a double sigmoid curve in Fig.
A double-sigmoidal curve will generally need at least six parameters, two midpoints and slopes parameters each, a maximum value and an asymptotic final value after decay.
An S-shaped or sigmoid curve is obtained upon plotting the total growth of a plant against a particular time interval.
The double sigmoid growth curve of the fig shows the progression in fruit diameter and ethylene evolution during the three phases of fruit growth.

Among the given crops, sugarcane is produced in the largest quantity worldwide. It is one of the most important commercial crops and is cultivated extensively in tropical and subtropical regions.

Sugarcane is primarily grown for the production of sugar, jaggery, ethanol, and other by-products. Due to its high yield per hectare and widespread cultivation, its annual global production is much higher than that of crops such as potato, brinjal, and orange.

Countries like Brazil, India, and China are among the leading producers of sugarcane, contributing significantly to global output.

While potato, brinjal, and orange are also important agricultural and horticultural crops, their total worldwide production is considerably lower than that of sugarcane.

Exam Tip: In terms of total production quantity (by weight), sugarcane is the most produced crop in the world, making it a frequently asked fact in agriculture and general knowledge examinations.

Therefore, Option A (Sugarcane) is the correct answer.

The separation of fermented wines from the residual solids is termed Racking.
The term racking means moving wine from one vessel to another. This can be from tank to barrel, barrel to barrel and barrel to the tank. Racking can be done to serve several different purposes.
It is done for filtering or fining, which is the process of moving wine or beer from one container to another using gravity rather than a pump, which can be disruptive to the beverage.

Durian belongs to the botanical family Bombaceae.
It is the edible fruit of several tree species belonging to the genus Durio. Durian (Durio zibethinus), locally referred to as the “king of fruits” is a dicotyledonous tropical seasonal plant species belonging to the member of family Bombacaceae and the genus of Durio.
Durio is often included in Bombacaceae because of the presence of monothecate anthers, as opposed to the bithecate anthers common to the rest of the mallows.

The predominant sex form in Cucumis melo is Andromonoecious.
Cucumis melo is described as andromonoecious, producing two blossom types, namely, perfect (Hermaphrodite) and male (Staminate) flowers.
It means having perfect and staminate flowers on the same plant. It is a breeding system in which individual plants produce both staminate (male) and perfect (hermaphrodite) flowers. It exists in both wind-pollinated and animal-pollinated taxa and is found in 1.7% of angiosperms.

1^st transgenic crop plant was tobacco developed in 1983.
The first transgenic plants were produced in tobacco plants (Nicotiana tabacum) which expressed antibiotic resistance. L-phosphinothricin, a gene resistant to PPT, Basta (the active ingredient of herbicide) was isolated in Medicago sativa.
In a transgenic plant, a segment of its DNA into the plant's nuclear DNA using a plasmid-integration system - one of the earliest discoveries of a natural DNA-transfer mechanism. In May 1983, the Van Montagu and Schell lab deployed this system as a gene-expression vector and the first transgenic plants.

Overripe bananas emit a compound called isopentanol, also known as isoamyl alcohol, which contributes to their characteristic strong and sometimes unpleasant odor when they become very ripe.

Isopentanol is a volatile organic compound that is released due to the breakdown of amino acids and fermentation processes occurring in the fruit as it overripens. This compound is also found in small quantities in alcoholic beverages and is associated with a fruity, pungent smell.

Option A: Allyl dipropyl This is incorrect. Allyl dipropyl disulfide is associated with the smell of garlic, not bananas.

Option B: Sugar This is incorrect. Although sugars increase as bananas ripen, they are not responsible for the aronia (odor) released during overripening.

Option D: Acid This is incorrect. While acids are involved in fruit metabolism, they do not produce the characteristic aronia smell of overripe bananas.

Therefore, the correct answer is Option C: Isopentanol, as it is the primary compound responsible for the strong smell associated with overripe bananas.

Vegetables are canned in brine.
In the canning process, vegetables are often cut into pieces, packed in cans and put through severe heat treatment to ensure the destruction of bacteria spores. The containers are sealed while hot to create a vacuum inside when they are cooled to room temperature.
Canned vegetables are soaked in brine made predominantly of water and salt.

Potato is an SDP (Short day plant) plant for tuberization.
Tuberization in potatoes (Solanum tuberosum L.) is a complex biological phenomenon that is affected by several environmental cues, genetic factors and plant nutrition.
In the case of potatoes, it requires more photoperiod to induce flowering. Whereas the formation of a tuber requires very less photoperiod. Thus, it is told that potato is LDP (Long day plant) for inducing flowering; but SDP for tuber formation.