Opsin three domains of life: Archaea, Bacteria, and Eukaryota. In Eukaryota, type I opsins are found mainly in unicellular organisms such as green algae, and in fungi. In most complex multicellular eukaryotes, type I opsins have been replaced with other light-sensitive molecules such as cryptochrome and phytochrome in plants, and type II opsins in Metazoa (animals). Microbial opsins are often known by the rhodopsin form of the molecule, i.e., rhodopsin (in the broad sense) = opsin + chromophore. Among the many kinds of microbial opsins are the proton pumps bacteriorhodopsin (BR) and xanthorhodopsin (xR), the chloride pump halorhodopsin (HR) the photosensors
Flora and fauna of Karachi plants is "flora". Flora, fauna and other forms of life such as fungi are collectively referred to as biota. Also crows, pigeons, doves, sparrows, parrots, hawks, eagles and seagulls. Flora and fauna of Karachi The flora and fauna of Karachi, Sindh, Pakistan. Flora is the plant life occurring in a particular region or time, generally the naturally occurring or indigenous—native plant life. The corresponding term for animal life is fauna. "Flora", "fauna" and other forms of life such as fungi are collectively referred to as biota. Bacterial organisms, algae, and other organisms are sometimes referred to as flora, so that