Archive | Plant Tissues

Fibre in Plants: Distribution and Types | Simple Tissue

In this article we will discuss about:- 1. Distribution and Arrangement of Fibre 2. Shape, Structure and Content of Fibre 3. Types 4. Functions 5. Sources and Uses. Fibre is narrow, elongated cell with thick lignified wall and narrow lumen tapering to a wedge-shape at both ends. Distribution and Arrangement of Fibre: Fibre occurs in the ground and vascular tissues [...]

By |2016-12-12T06:55:52+00:00December 12, 2016|Simple Tissue|Comments Off on Fibre in Plants: Distribution and Types | Simple Tissue

Differentiation of Sclereids Cells in Plants | Simple Tissue

The following points highlight the top six factors influencing differentiation of sclereids cells in plants. The factors are: 1. Ageing 2. Wounding 3. Position 4. Osmotic Pressure 5. Enzyme 6. Hormone.  Factor # 1. Ageing: In the barks many parenchyma cells change to brachysclereids. It is regarded that the sclereid differentiation is due to ageing of the tissues. Factor # [...]

By |2016-12-12T06:55:52+00:00December 12, 2016|Simple Tissue|Comments Off on Differentiation of Sclereids Cells in Plants | Simple Tissue

Phloem: Ontogeny and Phylogeny | Plants

Phloem consists of sieve cell, sieve tube, companion cell, phloem parenchyma and fibre. 1. Sieve Cell-Origin: The mother cells of sieve cells vary in shape. They are slender, short cylindrical to elongate with both ends tapering. Numerous primary pit fields occur on lateral walls. During differentiation the mother cells elongate. Vacuole appears in the cytoplasm that streams actively. The cell [...]

By |2016-12-12T06:55:51+00:00December 12, 2016|Complex Tissues|Comments Off on Phloem: Ontogeny and Phylogeny | Plants
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