Primary growth

primary growth
Growth initiated by the apical meristems of a plant root or shoot.
primary immune response ...

primary growth Cells produced by an apical meristem. The growth a plant by the actions of apical meristems on the shoot and root apices in producing plant primary tisues.

primary growth Growth originating in the apical meristems of shoots and roots resulting in an increase in length of the axis.
primary immune response The initial immune response following antigen exposure.

All roots have primary growth or growth in length. Roots of many vascular plants, especially dicots and gymnosperms, often undergo secondary growth, which is an increase in diameter.

A small group of tumour cells is called a primary growth. It may be
Benign - does not spread from its origin
Malignant - spread throughout the body invading other tissues and destroying them ...

See also: Tissue, Cells, Plant, Species, Phloem