We can easily distinguish a living animal from a living plant in our surroundings. So, to keep it as simple as it was, Carolus Linnaeus classified all the organisms of the world into two Kingdoms i.e. Plantae and Animalia. But the grouping of such diverse organisms into only two kingdoms was not satisfactory to many biologists of that time.
A sudden increase in the organic and inorganic nutrient supply in an aquatic environment is termed as Eutrophication. Sewage and waste water from industries and agriculture serve as primary source of these nutrients. Eutrophication results in the death of fishes, and other marine animals.
Cell Specification is a process of distributing roles among different cells of an embryo. This process starts when cells are capable of differentiating autonomously in a neutral environment. Among, three basic modes of cell specification, most of the organisms prefer an amalgam of the two or three modes.
Antitranspirants are the materials or chemicals which are capable of reducing the water loss from plant leaves. Almost 99 per cent of the water absorbed by the plant is lost in transpiration. Since water loss normally occurs through the stomatal pores in the leaves, anti-transpirants are usually foliar sprays.
A most common and important source of genetic variability is known to be present uniformly throughout the genome is termed Single Nucleotide Polymorphisms or SNPs. Interest in SNPs lies in the fact that these polymorphisms may be responsible for the differences in disease susceptibility, drug metabolism and response to environmental factors between individuals. Even, if they are not directly responsible for the disease, they serve as genetic markers for a nearby locus that might be responsible.