Environmental Science In Agricultural MCQ Question and Answer | Agriculture MCQ Question

Nucleic acids have important genetic materials, these are Genes and Chromosomes.
Genes are segments of deoxyribonucleic acid (DNA) that contain the code for a specific protein that functions in one or more types of cells in the body.
Chromosomes are structures within cells that contain a person's genes. Genes are contained in chromosomes, which are in the cell nucleus.

Minamata disease is due to pollution of industrial waste mercury into fishing water.
Minamata disease is a neurological disease caused by severe mercury poisoning. Signs and symptoms include ataxia, numbness in the hands and feet, general muscle weakness, loss of peripheral vision, and damage to hearing and speech.
Minamata disease was first discovered in the city of Minamata, Kumamoto Prefecture, Japan, in 1956, hence its name. It was caused by the release of methylmercury in the industrial wastewater from a chemical factory.

Breeding place of Flamingo (Hansawar) in India is Rann of Kutch.
Flamingos are a type of wading bird in the family Phoenicopteridae, which is the only extant family in the order of Phoenicopteriformes.
Before breeding, flamingo colonies split into breeding groups of about 15 to 50 birds. Both males and females in these groups perform synchronized ritual displays. These displays stimulate "synchronous nesting" and help pair up those birds that do not already have mates.

Overgrazing causes Soil erosion.
Overgrazing occurs when plants are exposed to intensive grazing for extended periods, or without sufficient recovery periods. It can be caused by either livestock in poorly managed agricultural applications, game reserves, or nature reserves.
Overgrazing reduces the usefulness, productivity and biodiversity of the land and is one cause of desertification and erosion. Overgrazing is also seen as a cause of the spread of invasive species of non-native plants and weeds.

The soil near the surface is usually darker than about one meter down, it is because the top soil is drier than sub-soil.
Subsoil is the layer of soil under the topsoil on the surface of the ground. Like topsoil, it is composed of a variable mixture of small particles such as sand, silt and clay, but with a much lower percentage of organic matter and humus, and it has a small number of rocks that are smaller mixed with it.
Topsoil is drier as it is in direct contact with the air and sunlight which makes it drier and darker.

Anastas and Warner formulated the twelve principles of "Green Chemistry".
The Twelve Principles of Green Chemistry were introduced in 1998 by Paul Anastas and John Warner. The 12 Principles of Green Chemistry outlined within this work declared a philosophy that motivated academic and industrial scientists at the time and continues to guide the green chemistry movement.
These principles can be grouped into "Reducing Risk" and "Minimizing the Environmental Footprint".

The pH of fertile soil is usually around 6 - 7.
Soil is a mixture of organic matter, minerals, gases, liquids, and organisms that together support life. Soils which contain high levels of particular clays with high swelling properties, such as smectites, are often very fertile.
The correct balance is where the soil pH is between 5.5 and 7.5. Plants can excrete H⁺ into the soil through the synthesis of organic acids and by that means, change the pH of the soil near the root and push cations off the colloids, thus making those available to the plant.

Biosphere like a balanced aquarium is partly open and partly closed system.
The biosphere also known as the ecosphere is the worldwide sum of all ecosystems. It can also be termed the zone of life on Earth.
The biosphere is virtually a closed system of matter, with minimal inputs and outputs. It is an open system, with photosynthesis capturing solar energy at a rate of around 130 terawatts per year in terms of energy.

The sphere of living matter found on the surface of the earth comprises Biosphere.
It can also be termed the zone of life on Earth. The biosphere is virtually a closed system of matter, with minimal inputs and outputs.
The term "biosphere" was coined by geologist Eduard Suess in 1875, and he defined it as the place on Earth's surface where life dwells.

The words trash, garbage, rubbish, refuse etc. are synonyms with Waste.
Waste is unwanted or unusable materials. Waste is any substance discarded after primary use, or is worthless, defective and of no use. A by-product, by contrast is a joint product of relatively minor economic value.
A waste product may become a by-product, joint product or resource through an invention that raises a waste product's value above zero.