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What is meristematic tissue? Write its types. Explain the function of each.❌No spam❌✔Answer briefly✔plz let @ItzZiddiSehzaadi55526 answer :p |
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Answer» On the basis of location, meristems are of THREE TYPES, apical, intercalary and LATERAL. (i) Apical: It is present at the apices of stem, root and their branches. Functions: It helps in growth in length and formation of primary tissues. (ii) Intercalary: It is found above or below stem nodes and leaf bases. Functions: It helps in growth of internodes, growth in leaves and correction of POSITION in lodged stems. (iii) Lateral: (a) Phellogen (Cork cambium): It develops from HYPODERMIS in stems and pericycle in roots. Function: Formation of protective cork (phellem) and aerating lenticles on the outside and secondary cortex (phelloderm) on the inner side. (b) Vascular Cambium: In stem it is formed from intra-fascicular cambial strips and interfascicular strips. In root it develops from conjuctive parenchyma and pericycle. Function: Formation of secondary phloem on the outer side and secondary xylem on the inner side. Vascular rays are formed at intervals for radial conduction. |
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