Question

what is meristematic tissue? Write its types. Explain the function of each.
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Answer 1

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.

Answer 2

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.

Explanation:

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