Question

1. Meristematic tissues and flow chart​

Answer 1

Hey dear mates!!

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Meristematic tissue is the plant tissue that has the ability to divide actively throughout its life..

More to know :-

Types of meristematic tissue :-

Meristematic Tissue On the basis of Origin :-

✪ Promeristem :-

❥︎ The earliest and youngest meristematic tissue.

❥︎ It originates from the embryo.

❥︎ The primary meristem arises from the promeristem.

❥︎ It is found in the root and the shoot tips.

✪ Primary Meristem :-

☯︎ It arises from the promeristem.

☯︎ Cells divide actively.

☯︎ It is present below the promeristem and forms the permanent tissue.

✪ Secondary Meristem :-

➪ It originates from the primary meristem.

➪ The permanent tissue forms from the secondary meristem.

Meristematic Tissue On the Basis of Position :-

✪ Apical Meristem :-

❥︎ These are present at the tips of the roots and shoots and helps in the increase of the height of the plants.

❥︎ Various cell divisions facilitate the growth of the cells in the roots and shoots and help in cellular enlargement.

❥︎ Apical meristem is divided into-promeristem zone, which contains actively dividing cells, and the meristematic zone, which contains protoderm, procambium and ground meristem.

✪ Intercalary Meristem :-

➪ It is located in the leaves and internodes at the intercalary position.

➪These help to increase the length of the internode.

➪It is found in grass, monocots and pines.

➪It is a part of apical meristem and adds to the height of the plant.

✪ Lateral Meristem :-

☯︎It is located in the stems and roots on the lateral side.

☯︎It increases the thickness of the plant.

☯︎Vascular cambium and cork cambium are the two lateral meristems.

☯︎These divide preclinically or radially and give rise to secondary permanent tissues.

Meristematic Tissue On the Basis of Function :-

✪ Protoderm :-

✰ It is the outermost plant tissue and forms the epidermis.

✰ It protects the plants from any mechanical shocks.

✪ Procambium :-

❥︎ It is the innermost tissue and gives rise to xylem and phloem.

❥︎ It helps in the transport of water and nutrients to different parts of the plant.

✪ Ground Meristem :-

⌨︎ The cells are large with thick walls.

⌨︎ It forms the cortex, pericycle and pith.

Hope it helps uh!!

happy learning!!

Answer 2

Meristematic tissue : which are capable of continuous division of cells