Horticulture MCQ Question and Answer | Agriculture MCQ Question

Carrot roots become longer below 10°C temperature.
The carrot is a root vegetable and biennial plant in the umbellifer family, Apiaceae. It grows a rosette of leaves while building up the enlarged taproot.
The shape and size of carrot roots are influenced by soil type, temperature, etc. branching in carrots due to hereditary and the presence of under-composted organic matter or injury to the tap root system or check in heavy soil at a lower temperature.

Sporophytic Self-incompatibility is reported in Beetroot, Radish and Brussels Sprout.
Sporophytic self-incompatibility (SSI) is a self-pollen recognition system that enforces outcrossing in plants. It is a mechanism that prevents pollen from one flower from fertilizing other flowers of the same plant.
Recognition in SSI systems is typically controlled by a complex locus (S-locus) with separate genes that determine pollen and stigma specificity.

Fern leaf disorder in potatoes is associated with a deficiency of Zinc.
Zinc deficiency symptoms of potatoes, also known as "fern leaf" or "little leaf", appear on young developing leaves as chlorosis, followed by the formation of narrow upwardly cupped leaf blades, often with tip burn.
As the deficiency progress, these symptoms develop into intense interveinal necrosis but the main veins remain green, as in the symptoms of recovering iron deficiency.

Among the following fruits in the options, avocado is the one that contains more fat than the rest.
A whole avocado provides roughly 30 grams of fat, 4.2 grams of saturated fat, almost 20 grams of monounsaturated fat, and 3.6 grams of polyunsaturated fat. So, while most of the calories in an avocado come from fat, they are mostly in the form of healthier monounsaturated fat.
Mango and grapes contain 0.4 g of fat in 100 gms, whereas ber contains 0.2 g in 100 gms.

Pectin content is a predetermining factor in the manufacture of Jellies.
Pectin is produced commercially as a white to light brown powder, mainly extracted from citrus fruits and is used in food as a gelling agent, particularly in jams and jellies.
It is also used in dessert fillings, medicines and sweets, as a stabilizer in fruit juices and milk drinks and as a source of dietary fibre.

The antisterility vitamin is Vitamin E.
Vitamin E was first discovered by Evans and Bishop in 1922 and it was initially denoted as an “anti-sterility factor X” that was necessary for reproduction.
Vitamin E (also known as tocopherol or alpha-tocopherol) is a nutrient that is important for many body processes. It helps your nerves and muscles work well, prevents blood clots, and boosts the immune system. Vitamin E is a type of antioxidant, a substance that protects cells from damage.

Larger ice crystals are formed in the frozen produce when the freezing method followed is sharp freezing.
Sharp freezing means the reduction of every portion of food placed in a sharp freezer facility to a temperature of ten degrees Fahrenheit or less in five hours or less.
It produces large ice crystals that punch through cell membranes. As a result, when foods with large ice crystals thaw, there is more dripping and loss of liquid. Small crystals are unstable and over time grow to form larger crystals.

Commercially tissue culture is adopted for the propagation of Banana.
Tissue culture means cloning and micro-propagation of tissues of the selected Elite plants and daughter suckers. It is widely used to produce clones of a plant in a method known as micropropagation.
The process consists of five important steps: Initiation, Multiplication, Shooting & rooting Primary Hardening in greenhouses and Secondary Hardening in shade houses.

The aroma containing the compound in cucumber is Nonadienal.
It is an organic compound that is classified as a doubly unsaturated derivative of nonanal. The molecule consists of α, β-unsaturated aldehyde with an isolated alkene group.
The compound has attracted attention as the essence of cucumbers, but it is also found in bread crust and freshly cut watermelon.

The seed (tuber) rate per hectare of potato (quintal) is 10.
Potato is mostly cultivated by planting tubers. The purity of the cultivars and healthy seed tubers are the primary requirements for a successful crop.
The tuber seed should be disease free, well-sprouted and 30 - 40 g each in weight. It is advisable to use the entire seed tuber for planting. The seed rate of potatoes depends upon the season of planting, duration, seed size, spacing, etc.