Biology

The term cancer relates to a group of diseases in which cells grow abnormally. It might be specified as a “malignant tumor.” Neoplasm suggests new growth.

The oral cavity is lined with different essential glands called oral glands. The most important oral glands are the salivary glands of mammals and poison glands of snakes.

Rhizome Root The elongated, horizontal thick, and the fleshly underground stem is called a rhizome. The cylindrical plant organ without chlorophyll, growing towards gravity is called root. Rhizomes mostly grow parallel or horizontal to the ground. Roots grow downward to the ground. Rhizomes are always underground. Roots are underground as well as aerial. In some … Read more Comparison of Rhizome and Root

The second layer of the skin that lies below the epidermis is called the dermis. Dermis includes blood vessels, small nerves, and pigment cells.

The arrangement of plants into different groups and sub-groups and classes is called classification. These are classified on the basis of similarities.

Phloem Xylem Transportation of food and nutrients from leaves to storage organs and growing parts of plants. This movement of substances is called translocation. Xylem are the vascular tissues for the absorption and transportation of minerals and water from roots to aerial parts of plants. Bidirectional: Moves up or doe nth plant stem from “source … Read more Comparison of Phloem and Xylem

The classification system of Carolus Linnaeus was the artificial system. The system based on one or two morphological characters for the identification of plants is called an artificial system. This is based on observable characters and does not show affinities among different groups.

Cheek teeth are premolars and molars are ridged multiple-rooted teeth. They lie just behind the canine and are generally used for grinding food. Structurally premolars and molars are quite similar.

Molecular scissors that cut double-stranded DNA molecules at specific sites. These are a unique class of enzymes that cleave (cut) DNA at a particular distinct interior place along with its size.

George Bentham and Joseph Dalton Hooker proposed this classification system. This was a natural system.