Horticulture MCQ Question and Answer | Agriculture MCQ Question

Major alkaloid in coleus is Forskholin.
Coleus forskohlii is an important medicinal plant which has a great role in Indian Ayurvedic medicine. It is the only source of the alkaloid forskolin the plant kingdom.
It has excellent potential in the drug trade. It is used as a stomach aid and in treating intestinal disorders.

Resistance breeding is done by Back crossing.
Resistance breeding is an important strategy for reducing crop losses caused by disease.
Backcrossing is a crossing of a hybrid with one of its parents or an individual genetically similar to its parent, to achieve offspring with a genetic identity closer to that of the parent. It is used in horticulture, animal breeding and production of gene knockout organisms.

Kinnow is basically a Mandarin.
It is a high yield mandarin hybrid cultivated extensively in the wider Punjab region of India.
It is a hybrid of two citrus cultivars – ‘king’ (Citrus nobilis) × ‘Willow Leaf’ (Citrus deliciosa), developed by Howard B. Frost at the University of California Citrus Experimentation Station.

The palmyrah palm belongs to the family Palmae. There are two kinds of the palmyrah- the male and the female.
The male and female flowers are held by two different trees, never in one tree. Both male and female trees produce spikes of flowers but only the female plant bears fruits. However, both trees are used to tap toddy. The flowers are small and appear in densely clustered spikes, developing into large, brown, roundish fruits. The male flowers are smaller than the female flowers.
The tapping of young female inflorescence in Palmyrah is called Kaivetty.

Almond is originated from Asia minor.
The almond tree is a native of southwest Asia basically Iran. The domesticated form can ripen fruit as far north as the British Isles.
It is a small tree, growing to 4 - 9 meters tall. The leaves are lanceolate, 6 - 12 centimeters long, and serrated at the edges. The flowers are white or pale pink, 3 - 5 cm diameter with five petals, produced before the leaves in early spring.

Seed plantation for production of naturally crossed dwarf seedling of coconut is located at Kidu. This centre is located in the Kidu Reserve Forest, Bilinele Village, Kadaba Taluk, Dakshina Kannada District of Karnataka State.
The dwarf variety is very shorter in stature and its life span is short as compared to the tall. Tall × Dwarf (T×D), Dwarf × Tall (D×T) are the two important hybrid coconut varieties.

The restricting temperature for growth of broad leaved evergreen trees is 5°C.
The temperature below this will restrict the growth of broad leaved evergreen trees. The trees will just save energy to survive the harsh winters.
The cold temperature inhibit root expansion into the deepen and colder soil layers and thus reported zero growth rate.

Celery belongs to the botanical family Apiaceae.
Apiaceae or Umbelliferae is a family of mostly aromatic flowering plants named after the type genus Apium and commonly known as the celery, carrot or parsley family, or simply as umbellifers.
Celery is a marshland plant that has been cultivated as a vegetable. It has a long fibrous stalk tapering into leaves. Depending on location and cultivar, either its stalks, leaves or hypocotyl are eaten and used in cooking. Celery seed powder is used as a spice.

Colour of Pusa sweti variety of turnip is White.
It is developed at IARI, New Delhi and released in 1976. Selection from an indigenous germplasm collection from Punjab.
This variety is suitable for early sowing. It is sown in the month of August-September. The tubers of this variety are white in colour and shiny. The crop is ready after about 40 to 45 days of sowing.