Archive | Plant Tissues

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

Vessel: Origin and Phylogeny | Plants

In this article we will discuss about:- 1. Origin and Development of Vessel 2. Phylogeny of Vessel. Origin and Development of Vessel: Trachea (or vessel) originates from meristematic cells (Fig. 10.4) that are grouped together in a longitudinal file. The meristematic cells are known as xylem mother cell that develops from procambial cells in the primary xylem. In secondary xylem [...]

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

Mechanical Tissue in Plants (With Diagram) | Botany

In this article we will discuss about the mechanical tissue in plants. This will also help you to draw the structure and diagram of mechanical tissues in plants. The tissue that supports a plant and their growing organs against any deformation and provides mechanical strength is termed as mechanical tissue. Haberlandt (1914) called the mechanical tissue as stereome. Schwendener in [...]

By |2016-12-12T06:55:50+00:00December 12, 2016|Mechanical Tissues|Comments Off on Mechanical Tissue in Plants (With Diagram) | Botany
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