The International Code of Nomenclature is the rule that is accepted internationally for naming new plants and animals.
For naming animals the rule is named as International Code of Zoological Nomenclature (ICZN) and for naming plants, algae and fungi the rule is named as the International Code of Nomenclature (ICN).
The basic rule for International Code of Nomenclature involves that, the first part of the name helps in identifying genus to which the species belongs which is the generic name and the second part which is the specific name helps in identifying the species in the genus.
for example animal nomenclature - Homo sapiens (Human) and plant nomenclature - Pisum sativum (Pea).
Gas exchange between tissues and the blood is an essential function of the circulatory. The air contains oxygen that crosses the lung tissue, enters the bloodstream, and the alveoli are in direct contact with capillaries of the circulatory system. As water flows over the gills, oxygen is transferred to blood via the veins.
Chromosomal DNA is packaged inside microscopic nuclei with the help of histones. These are positively-charged proteins that strongly adhere to negatively-charged DNA and form complexes called nucleosomes. ... Nucleosomes fold up to form a 30-nanometer chromatin fiber, which forms loops averaging 300 nanometers in length.
