Tissue: Meristematic & Simple Permanent
Tissue : Meristematic & Simple Permanent ( For class IX) Q1 What is tissue? A tissue can be defined as a group of cells having common origin, structure and function. Q2 Types of tissue? Tissues are of two types – (i) Meristematic tissue and (ii) Permanent tissue. Q3 Meristematic tissue? Meristematic tissues are a group of young living cells that remain in a state of continuous division to form new and newer cells. Animals don't have Meristematic tissue. Q4 Properties of Meristematic tissue? (i) The cells of meristem are isodiametric in shape. (ii) They are tightly packed with negligible intercellular spaces. (iii) All cells of meristem are living. (iv) The cell wall is thin and composed of cellulose only. (v) Cells have large nuclei. (vi) Generally vacuoles are absent, if present are very small and scattered. (vii) Plastid and mitochondria underdeveloped. (viii) They are located in the growing regions only. Q5 Classify meristems on the basis of position. According ...