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Difference between primary and secondary phloem?
Primary phloem is formed during the primary growth of a plant and consists of sieve tubes, companion cells, parenchyma, and fibers. Secondary phloem is produced during secondary growth and consists of sieve tubes, companion cells, axial and ray parenchyma, and fibers. Secondary phloem is typically thicker and contributes to the increase in girth of the plant.
Example of phloem?
Phloem is a type of plant tissue responsible for transporting organic nutrients, mainly sugars, produced during photosynthesis, from the leaves to other parts of the plant, such as the roots and fruits. It consists of sieve tubes, companion cells, fibers, and parenchyma cells. One common example of phloem in plants is the phloem bundles found in vascular bundles within the stems of plants like trees.
Function of phloem parenchyma?
Phloem parenchyma cells provide structural support to the phloem tissue and help in the storage of starch, lipids, and proteins. They also facilitate the transport of organic compounds such as sugars and hormones within the plant.
What is the function of the cambium?
The cambium is a layer of cells in plants that is responsible for lateral growth, producing new xylem and phloem cells. It plays a key role in secondary growth, increasing the width of stems and roots.
What two cell types make up xylem amd phloem?
Xylem is composed of tracheary elements (such as vessels and tracheids) and fibers. Phloem is composed of sieve tube elements and companion cells.
