Agronomy MCQ Question and Answer | Agriculture MCQ Question

Osmotic potential is the potential of water molecules to move from a hypotonic solution to a hypertonic solution across a semi-permeable membrane.
In stress condition, the Osmotic Potential in Plants Decrease.

Apatite is a phosphate-containing mineral, usually hydroxyapatite, fluorapatite, and chlorapatite. It is the association of the calcium ions that is responsible for the characteristic hexagonal crystal structure and morphology.
The primary use of apatite is a source of phosphate in the manufacture of fertilizer and other industrial uses. It is occasionally used as a gemstone.

True density is the quotient of mass over the volume of a sample, without considering pores in the material. The true density of normal mineral soil is 2.65 grams per cubic centimeter. However, it can be as high as 3 g/cm³ for very dense particles and as low as 0.9 g/cm³ for organic particles.

The revolution brought in developing countries for farm land to enhance the production of food grains by incorporating high yield varieties of seeds and developed technology.
The main crops were wheat and rice to be developed as these are the staple crop worldwide.

Out of the given options only the third one Rice and Jowar are the major crops of Odisha is incorrect whereas all others are correct.
The major crops of Odisha are Rice, Pulses, Jute, Coconut, and Turmeric, not Jowar.
Odisha contributes one-tenth of the total rice produced in the country.

Shifting cultivation is the practice of ‘slash and burn’ also known as ‘Jhum kheti'. It is practiced in the northeastern region of India, including Assam, Manipur, Mizoram and the Naga hills of Nagaland.
Subsistence farming is the form in which nearly all the crops or livestock raised are used to maintain the farmer and his family. It is practiced in the Ganga delta region.
Commercial farming uses higher doses of modern inputs to achieve higher productivity. It is mostly practiced in American Prairies.
Plantation agriculture is a type of commercial farming in which a single crop is grown for the entire year. It is practiced for the plantation of tea, coffee, etc in the gardens of Assam.

A zero energy cool chamber is a type of evaporative cooler, and an inexpensive way to keep vegetables fresh without the use of electricity.
This was originally developed in India by Susanta K. Roy and D. S. Khuridiya in the early 1980s to address fruit and vegetable post-harvest losses, especially in rural areas.

Chenopodium album is one of the weeds which is not a Kharif season weed.
It is a fast growing weedy annual plant belonging to the genus chenopodium. It tends to grow upright at first, reaching heights of 10 - 150 cm, but typically becomes recumbent after flowering unless supported after flowering.

Brown rice is the whole and dehulled rice grain.
Dehulling is the process of separation of the hull from the rice grain. Intensive peeling and scouring of the grain to increase its value of the grain. In this process, the outer pericarp and testa are removed.

Irrigation is the main source of water in the semi-arid areas, hence it is not irrigated at scheduled stages it may lead to great loss. The critical stages for irrigation of sugarcane are the formative or vegetative stages. The formative stage is 60 - 130 days after planting and a heavy quantity of water is required at this stage in the northern part of India.