Horticulture MCQ Question and Answer | Agriculture MCQ Question

Polyembryony in the case of mango is seen in Vellai Columban from the following cultivars.
The phenomenon of polyembryony, characterized by the formation of more than one embryo in the seed, is known to occur in several mango varieties growing under different conditions of climate and soil.
Vellai Columban cultivar of mango is tetraploid (2n = 4x = 80) which is a polyembryonic type.

The inflorescence of onion is called Umbel.
An umbel is an inflorescence that consists of several short flower stalks (called pedicels) that spread from a common point, somewhat like umbrella ribs. The word was coined in botanical usage in the 1590s, from Latin umbella "parasol, sunshade".
The inflorescence in onion is umbel, in which the outside flowers bloom first and flowering progress to the inside. Some species produce bulbils within the umbels, and in some species, such as Allium paradoxum, the bulbils replace some or all the flowers.

Seeds lacking endosperm are seen in the Orchid.
Orchid seeds usually have no endosperm; the seed coat embraces like a balloon the air-filled space between embryo and testa.
The endosperm is a nourishing tissue present in the seed which nourishes the developing embryo. In orchids, seed endosperm is absent because it is used up during the time of seed development.

Food Safety and Quality Control Act were passed in the 2001 year.
The purpose of this Act is to ensure the quality and safety of food, agricultural or aquatic commodities and agricultural inputs, the management of food safety risks; and the control and regulation of relatable activities.
The text consists of 55 sections divided into 6 Parts as follows:
Purposes, definitions and administration (I);
Licensing (II);
Quality and safety standards (III);
Inspections and orders (IV);
Enforcement (V);
General (VI).

Plants preferred for xeriscaping are cacti.
The term “xeriscape” comes from the Greek root word “xeros”, meaning dry.
Xeriscaping is the process of landscaping or gardening, that reduces or eliminates the need for irrigation.
It is promoted in regions that do not have accessible, plentiful, or reliable supplies of fresh water and has gained acceptance in other regions as access to irrigation water has become limited, though it is not limited to such climates. This method of low-water or no-water landscaping is used to reduce the need for irrigation.
Cactus grows on rocky hillsides in its native habitat, Turk's cap cactus will grow well both on slopes and in rock gardens, as well as in xeriscapes with native shrubs, perennials and wildflowers.

The most acidic citrus fruit is Citrus megalaxycarpa.
Citrus has had a significant role in dietary and medicinal purposes from time immemorial and is widely acknowledged for its therapeutic properties. Citric acid is found naturally in citrus fruits, especially lemons and limes.
Citrus megaloxycarpa Lush. is a little-known sibling of the genus Citrus and family Rutaceae with an unknown origin. Large, vigorous, open-growing trees. Leaves are large, citron-like in appearance. Fruits look like medium to medium/large citron. Rind yellow, rough, medium thick.

The ideal storage temperature for Anthuriums is 13°C.
All species of anthurium are native tropical plants, and mimicking those conditions will give you the best chances for success. This plant prefers high humidity.
Anthurium is stored in water at 13°C for 3 - 5 weeks. Flowers are very sensitive to low temperatures. Storage below 13°C causes darkening of the spathe. Red-coloured cultivars are more susceptible to chilling injury.

Tiger lily is Triploid.
Lilium lancifolium is an Asian species of lily, native to China, Japan, Korea, and the Russian Far East. It has the English name tiger lily. It is widely planted as an ornamental because of its showy orange-and-black flowers.
Lilies appear which have more chromosomes than normal. Those with 36 chromosomes in each cell instead of 24 are referred to as triploids.

The common name of Lentinus edodes is Shiitake mushroom.
The shiitake is an edible mushroom native to East Asia, which is now cultivated and consumed around the globe. It is considered a medicinal mushroom in some forms of traditional medicine.
In a 100-gram reference serving, raw shiitake mushrooms provide 141 kilojoules (34 kilocalories) of food energy and are 90% water, 7% carbohydrates, 2% protein and less than 1% fat.

A commonly used carbon energy source in plant tissue culture media is Sucrose.
Sucrose has been frequently used as a carbon source in plant tissue culture for energy supply and induction of osmotic stress, but its optimal concentration required for each stage of in vitro culture depends mainly on the plant species.
The most preferred carbon or energy source is sucrose at a concentration of 20 - 60 g/L. But the levels of sucrose that are normally used to support the growth of tissue cultures are often inhibitory to chlorophyll synthesis.