Parenchyma Tissue: Parenchyma is a simple permanent tissue among three types of ground tissues in plants. It is a living, polygonal cell with a large central vacuole, and intercellular spaces between them. Parenchyma Tissue also known as mesenchymal tissue is spongy tissue….

Plants have two transport systems – xylem and phloem . Xylem transports water and minerals. Phloem transports sugars and amino acids dissolved in water.

Phloem forms a conductive or vascular system in the plant body. It conducts the food made in the leaves by photosynthesis to the storage and growing regions. It is made of four components sieve tubes, companion cells, phloem fibers and phloem parenchyma.

Xylem is the complex tissue of plants, responsible for transporting water and other nutrients to the plants. Phloem is living tissue, responsible for transporting food and other organic materials. Phloem transports food materials that are prepared by the green parts of the plants to other parts of the plant.

Phloem, also called bast, tissues in plants that conduct foods made in the leaves to all other parts of the plant. Phloem is composed of various specialized cells called sieve tubes, companion cells, phloem fibres, and phloem parenchyma cells.

Such a parenchyma type is called aerenchyma. Parenchyma servers as a packing tissue, to fill the spaces between other tissues. Parenchyma acts as a primary support to the stem….3 Simple Permanent Tissues.

The fibres are the dead sclerenchymatous cells in the phloem responsible for mechanical support. These cells are considered as non-living component of phloem.

Phloem tissue consists of conducting cells, generally called sieve elements, parenchyma cells, including both specialized companion cells or albuminous cells and unspecialized cells and supportive cells, such as fibres and sclereids.

The elements of phloem tissue are:

• Sieve elements.
• Sieve plates.
• Companion cells.
• Phloem parenchyma.
• Phloem sclerenchyma.

In trees, the phloem is the innermost layer of the bark. It derived from the word “phloios” meaning bark. Phloem includes both living and dead components. Living elements of phloem are sieve tubes, companion cells and phloem parenchyma.

Phloem fibers