So, really, lichens are effectively photosynthetic in the same sense plants are. But are a composite organism composed of a fungus (nonphotosynthetic) and cyanobacteria (photosynthetic), instead of a single organism.n fungi we can find mushrooms, toadstools, yeasts, molds and more. â¦ According to the newest classification, fungi are eukaryotic (genetic material surrounded by a membrane, i.e nucleus), haploid (only one set of cromosomes) or diploid (two sets of cromosomes) that make zygotic meiosis.
A tough white covering called the sclera protects the eye. Part of the white sclera can be seen in the front of the eye. A clear, delicate membrane called the conjunctiva covers the sclera. At the front of the eye is the cornea. The cornea is the clear part of the eyeâs protective covering. It allows light to enter the eye. The iris is the colored part of the eye that contracts and expands so the pupil can let just the right amount of light into the eye. The light is directed by the pupil to the lens. The lens focuses the light onto the retina (lining the back of the eye).
Sclera. The sclera is the part of the eye commonly known as the âwhite.â It forms the supporting wall of the eyeball, and is continuous with the clear cornea.The sclera is covered by the conjunctiva, a clear mucus membrane that helps lubricate the eye.It is thickest in the area surrounding the optic nerve.he sclera is the part of the eye commonly known as the âwhite.â It forms the supporting wall of the eyeball, and is continuous with the clear cornea.