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

Common indicator organism of water pollution is Escherichia coli.
Escherichia coli also known as E. coli is a Gram-negative, facultatively anaerobic, rod-shaped, coliform bacterium of the genus Escherichia that is commonly found in the lower intestine of warm-blooded organisms.
The bacteria, typically transmitted through contaminated food or drinking water, adheres to the intestinal lining, where it secretes either of two types of enterotoxins, leading to watery diarrhea.

The percentage of solar energy/radiation used in photosynthesis is 10%.
Photosynthesis is a process used by plants and other organisms to convert light energy into chemical energy that, through cellular respiration, can later be released to fuel the organism's activities.
Plants absorb sunlight, light energy from the sun is used to split water molecules (photolysis). The sunlight hits chloroplasts in the plant to produce food. This causes an enzyme to split the water. Water, when split, gives oxygen, hydrogen and electrons.

Environmental studies are very important for Getting clean drinking water, hygenic living conditions and Clean and fresh air.
Environmental study is a multidisciplinary academic field that systematically studies human interaction with the environment.
It is a broad field of study that includes the natural environment, the built environment, and the relationship between them. Environmental education's main goal is to instil in all members of society a pro-environmental thinking and attitude. This will help to create environmental ethics and raise people's awareness of the importance of environmental protection and biodiversity.

Increased asthmatic attacks in certain seasons are related to Inhalation of seasonal pollen.
The same substances that trigger allergic rhinitis with symptoms, such as pollen, dust mites and pet dander, may also cause asthma signs and symptoms.
Asthma symptoms like shortness of breath are often closely linked to allergies and exposure to allergic triggers, such as ragweed, pollen, and animal dander or dust mites. Irritants in the air like smoke, chemical fumes, strong odours or extreme weather conditions can also be triggers.

The circulation or cycling of elements in an ecosystem is known as Bio-geochemical cycling.
A biogeochemical cycle is a pathway by which a chemical substance cycles the biotic and abiotic compartments of Earth. The biotic compartment is the biosphere and the abiotic compartments are the atmosphere, hydrosphere and lithosphere.
Biogeochemical cycles always involve active equilibrium states: a balance in the cycling of the element between compartments. However, overall balance may involve compartments distributed on a global scale.

Organisms ⟶ Populations ⟶ Communities ⟶ Ecosystems ⟶ Ecosphere.
Ecology is the study of the relationships among living organisms, including humans, and their physical environment.
Ecology considers organisms at the individual, population, community, ecosystem and biosphere levels.

Gir - Lion is matching sanctuary.
Gir National Park and Wildlife Sanctuary, also known as Sasan Gir, is a forest, national park, and wildlife sanctuary near Talala Gir in Gujarat, India. It is located 43 km north-east of Somnath, 65 km south-east of Junagadh and 60 km south-west of Amreli.
The 14^th Asiatic Lion Census 2015 was conducted in May 2015. In 2015, the population was 523. The population was 411 in 2010 and 359 in 2005. The lion population in Junagadh District was 268 individuals, 44 in Gir Somnath District, 174 in Amreli District and 37 in Bhavangar District. There are 109 males, 201 females and 213 cubs.

Major source of biologically significant sulphur is inorganic sulphates.
Significant levels of sulphate are found in foods and various sources of drinking water, the major source of inorganic sulphate for humans is biodegradation due to body protein turnover of the sulphur amino acids methionine and cysteine.

Animals and plants are best protected in national parks.
A national park is a natural park in use for conservation purposes, created and protected by national governments. Often it is a reserve of natural, semi-natural, or developed land that a sovereign state declares or owns.
In national parks, plant and animal species, geomorphological sites and habitats are of special scientific, educational, and recreational interest or contain a natural landscape of great beauty.

Product moment coefficient of correlation measures Circular type of relationship between two variables.
It is a measure of linear correlation between two sets of data. It is the ratio between the covariance of two variables and the product of their standard deviations; thus, it is essentially a normalized measurement of the covariance, such that the result always has a value between -1 and 1.
For variables X = {x₁,...,x_n} and Y = {y₁,...,y_n} that are defined on the unit circle [0, 2π), it is possible to define a circular analog of Pearson's coefficient. This measure can be useful in fields like meteorology where the angular direction of data is important.