★➢ Tissue – group of cells having a common origin and usually | Dr. Anand Mani Updates and news

★➢ Tissue – group of cells having a common origin and usually performing a common function

☆➢ Two groups of plant tissue
- meristematic
- permanent

★➢ meristems – Growth in plants is largely restricted to specialised regions of active cell division
☆- apical meristems – occur at the tips of roots and shoots and produce primary tissues
★➔ shoot apical – meristem occupies the distant most region of the stem axis
★➔ root apical – occupies the tip of a root
- intercalary meristem – occurs between mature tissues
☆➔ occur in grasses and regenerate parts removed by the grazing herbivores
☆- secondary or lateral meristem ☆– occurs in the mature regions of roots and shoots
☆➔ appear later than primary meristem
☆➔ cylindrical meristems
☆➔ responsible for producing the secondary tissues
☆➔ examples of later meristem ☆– Fascicular vascular cambium, interfascicular cambium
and cork-cambium

★➢ permanent or mature cells – newly formed cells become structurally and functionally
specialised and lose the ability to divide, constitute Primary tissue