Horticulture MCQ Question and Answer | Agriculture MCQ Question

Central Agmark Laboratory is situated at Nagpur.
AGMARK is a certification mark employed on agricultural products in India, assuring that they conform to a set of standards approved by the Directorate of Marketing and Inspection.
The Agmark certification is employed through fully state-owned Agmark laboratories located across the nation which act as testing and certifying centres. In addition to the Central AGMARK Laboratory (CAL) in Nagpur.
There are Regional AGMARK Laboratories (RALs) in 11 nodal cities (Mumbai, New Delhi, Chennai, Kolkata, Kanpur, Kochi, Guntur, Amritsar, Jaipur, Rajkot, Bhopal).

Selenium among the following acts as an antioxidant.
As to their biological action mechanism selenium and its compounds are antioxidants.
Selenium is an active immunomodulator, a much more potent anti-oxidant than vitamins E, C and A, beta-carotene, but much more toxic.

Manilkara hexandra (Khirni) is used as root stock for Sapota. A rootstock is part of a plant, often an underground part, from which new above-ground growth can be produced.
Manilkara hexandra is a tree species in the tribe Sapoteae, in the family Sapotaceae. It is locally known as the Khirni tree in parts of Bangladesh and India. It is a slow-growing but fairly large evergreen species. It grows in tropical and temperate forests.

Pusa Red is a variety of Onion.
Pusa Red is a variety of onions and in this type, the bulb is medium in size, purple-red and flattish round, each bulb weighs 70 - 90 g, has less bolting and with poor pungency. The variety requires short to intermediate day length. It matures in 123 - 140 days after transplanting. It is commonly grown in India.

The primary objective of greenhouse cultivation of vegetables is to get off season yield.
It maintains the yield by providing favourable growing conditions and protecting crops from un-favourable weather and various pests.
They offer a suitable microclimate for plants and make possible growth and fruiting, which is not possible in open fields. This is why a greenhouse is also known as a "controlled environment greenhouse".

The centre of Origin of Tomato is Peru and Mexico.
The wild species originated in the Andes Mountains of South America, probably mainly in Peru and Ecuador, and is thought to have been domesticated in pre-Columbian Mexico; its name is derived from the Náhuatl (Aztec) word tomatl, which meant simply 'Plump fruit'.
The tomato is the edible berry of the plant Solanum Lycopersicum.

Out of the given options, the calcium carbide chemical not used for artificial ripening in a banana is wrong as it is used in the ripening of a banana. While all the other three statements are correct.
Ethylene gas, acetylene gas liberated from calcium carbide and ethephon are some of the commercial ripening agents used successfully in the trade and they have been widely studied for their effectiveness in initiating and accelerating the ripening process and their effect on fruit quality and health-related issues.

The best time for budding in Ber is July - August.
Ber belongs to the family Phamnaceae and is indigenous to India.
Seeds of any locally adapted and vigorous ber trees can be used for raising rootstocks in the field during July - August for in-situ budding or can be budded in the nursery beds. Budding is done during May - June on Zizyphus mauritiana rootstock.

Ginger is a rhizome that grows at, or just under, the surface of the soil. The rhizome sprouts green foliage upward, to about three feet above the ground, while producing roots from its undersurface.
Garlic is a bulbous herb - which means that it grows with individual pieces packed together. Each of these lobes is called a clove of garlic.
Potatoes are stem tubers - enlarged stolons thicken to develop into storage organs. The tuber has all the parts of a normal stem, including nodes and internodes.
Sweetpotato is the storage root of the plant; an enlarged lateral root. It is not a type of stolon. Thus it is wrongly matched.

Polyembryony is the occurrence of more than one embryo in a seed which consequently results in the emergence of multiple seedlings.
The mango tree grown from poly-embryonic seed does not need to be grafted. It is observed that the mango tree can produce fruits in 2 to 4 years if they have been grown from a polyembryonic seed.
Chandrakaran, Olour and Salem all three are polyembryonic varieties of mango.