Question

What are simple tissues? Describe salient features and functions of meristematic tissue ?

Answer 1

Explanation:

Simple tissues are tissues composed of cells that are structurally and functionally similar i.e. they are made up of only one type of cell. Features of meristematic tissues:

(i) Cells divide repeatedly.

(ii) Cell walls are thin.

(iii) Vacuoles are not found.

(iv) Metabolically very active.

(v) They have dense cytoplasm.

(vi) They have prominent nucleus.

Answer 2

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SIMPLE TISSUES ::

➡Simple tissues are made up of one one type of cells.

➡Here only one type of cell means that they are structurally and functionally similar to one another.

➡There are three types of simple tissues.

✴Parenchyma

✴collenchyma

✴sclerenchyma.

➡Parenchyma ::

✴This tissue forms major part of the plant body.

✴Made of cellulosic cell walls.

✴Helps in storage,, photosynthesis,, secretion.

➡Collenchyma :

✴It is a living,, mechanical tissue.

✴Cell wall made up of cellulose,, hemicellulose,, pectin

✴It's main function is to provide mechanical support to the growing parts of plant such as young stems.

➡sclerenchyma :

✴It is a hard and dead tissue.

✴the cell wall is made up of lignin.

✴This also provide mechanical support.

FEATURES AND FUNCTIONS OF MERISTEMATIC TISSUES ::

✴These tissues consists of cells having power of division.

✴The protoplasm within the cell is dense, the vacuoles are smaller or absent.

✴The nucleus are larger in size.

✴Ergastic substances are absent.

✴The cell wall are thin cellulosic type.

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