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

The typical composition of management of solid wastes does not depend on anyone from the given options.
Waste composition analysis is a process of physically separating, weighing and categorizing waste. It can be used both to determine total amounts of FLW and to categorize the different types of foods that have been discarded or to distinguish between food and inedible parts.
The composition of MSW varies significantly from one municipality to another and from country to country. Such variation depends mainly on the life style, economic situation, waste management regulations and industrial structure.

An organochlorine insecticide is DDT/aldrin.
Organochlorine pesticides are chlorinated hydrocarbons used extensively from the 1940s through the 1960s in agriculture and mosquito control.
Organochlorines contain organic carbon, hydrogen, and chlorine. They include compounds such as Diphenyl aliphatics, Compounds like DDT (dichlorodiphenyl trichloro ethane) and hexchlorocyclohexane.
Representative compounds in this group include DDT, methoxychlor, dieldrin, chlordane, toxaphene, mirex, kepone, lindane and benzene hexachloride.

Hydrogen is not a greenhouse gas.
A greenhouse gas (GHG or GhG) is a gas that absorbs and emits radiant energy within the thermal infrared range, causing the greenhouse effect. The primary greenhouse gases in Earth's atmosphere are water vapor (H₂O), carbon dioxide (CO₂), methane (CH₄), nitrous oxide (N₂O) and ozone (O₃).
Hydrogen does not have a direct effect on climate. Instead, it affects other pollutants like methane which is a prominent greenhouse gas.

With respect to energy, earth is regarded as Open system.
Earth's atmosphere has no definite boundary, gradually becoming thinner and fading into outer space.
Any system within the Earth system is considered an open system. Because energy flows freely into and out of systems, all systems respond to inputs and, as a result, have outputs.

The ground water reserve of India is 0.93%.
Dynamic Ground Water Resources of India, 2022. As per the 2022 assessment report, the total annual ground water recharge for the entire country is 437.60 billion cubic meters (BCM) and annual ground water extraction for the entire country is 239.16 BCM.
Groundwater resources are primarily consumed by the agricultural sector. Irrigation accounts for around 87% of the total annual groundwater extraction or 208.49 BCM.

a. The rate at which organic molecules are formed in green plants is Gross primary productivity. This is measure of total assimilation of light energy into living matter of the plant (biomass).

b. The ultraviolet rays are absorbed by ozone layer. Ozone is a particularly effective absorber of UV radiation. As the ozone layer gets thinner, the protective filter activity of the atmosphere is progressively reduced.

c. The rate of increase in the biomass of heterotrophs is Secondary productivity. The productivity of heterotrophs, such as animals, is called secondary productivity.

d, Ten percent law is Lindemann's law. In the transfer of organic matter/energy from one trophic level to the next, only about 10% of the energy is transferred. The remaining is lost during transfer or broken down in respiration.

e. The exchange of materials between the living of non-living worlds is cycle of matter. Cycles of matter are called biogeochemical cycles, because they include both biotic and abiotic components and processes. Components that hold matter for short periods are called exchange pools.

Total water in hydrosphere is 1.4 billion km³.
It is the combined mass of water found on, under, and above the surface of a planet, minor planet, or natural satellite.
It has been estimated that there are 1.386 billion cubic kilometres of water on Earth. This includes water in gaseous, liquid and frozen forms as groundwater in the Earth's crust, oceans and seas, lakes, rivers and streams, wetlands, glaciers, ice and snow cover on Earth's surface; vapour, droplets and crystals in the air; and part of living plants, animals and unicellular organisms of the biosphere.

Sampling in stratified elements is grouped because they share certain features.
Stratified random sampling is a method of sampling that involves the division of a population into smaller groups known as strata.
In stratified sampling, researchers divide subjects into subgroups called strata based on characteristics that they share.

Guano deposits of birds consist of Phosphorus.
Seabird guano is the fecal excrement from marine birds and has an organic matter content greater than 40%, is a source of nitrogen (N) and available phosphate (P₂O₅).
Seabird guano contains plant nutrients including nitrogen, phosphorus, calcium and potassium.

The source of methane pollution is rice fields, marshes and cattle and other herbivores.
Methane is the primary contributor to the formation of ground-level ozone, a hazardous air pollutant and greenhouse gas, exposure to which causes 1 million premature deaths every year.
Methane is emitted from a variety of anthropogenic and natural sources. Anthropogenic emission sources include landfills, oil and natural gas systems, agricultural activities, coal mining, stationary and mobile combustion, wastewater treatment, and certain industrial processes.