Once in the mesophyll cells, CO 2 diffuses into the stroma of the chloroplast, the site of light-independent reactions of photosynthesis. These reactions actually have several names associated with them. Other names for light-independent reactions include the Calvin cycle, the Calvin-Benson cycle, and dark reactions.
What is Vellus Hair. Vellus hairs are a type of human hair that are fine, short, light-colored or transluscent, and non-pigmented that develop from childhood and are found on most areas of the body. Their growth is not, in contrast to terminal hairs, affected or dictated by hormones.
On the entire surface of the human body, there are about 5 million hairs; but many of them are difficult to see. Types of Hairs While some areas of our skin appear to lack hair (e.g., on the forehead and nose), they actually have tiny, colorless hairs called vellus hairs. We have about as many hairs per square inch on our nose and forehead as we do on the top of our headâwe just donât notice them. The long and often pigmented hairs (e.g., those of our scalp or beard) are called terminal hairs. Several other types of hair, such as eyelashes, form during the course of our life.