A lenticel is a specialized pore found in the periderm that allows for gas exchange in woody stems and roots. The remainder of the periderm includes the cork cambium and cork cells, which form the protective outer layer of the plant. Lenticels are distinct in their role of facilitating gas exchange, while the rest of the periderm acts as a barrier to protect underlying tissues.
In older woody plants, the epidermis of the stem is replaced by periderm, which includes tissues such as cork cambium, cork cells, and phelloderm. Periderm helps protect the stem and replaces the functions of the epidermis as the plant matures and its stems thicken.
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Cork cambium is the layer of tissue that produces cork cells, which accumulate to form the protective cork layer. This cork layer functions to protect the stem or trunk of a plant from physical damage, pathogens, and water loss. Cork is a natural insulator and has properties that make it resistant to fire and decay, providing additional protection to the plant.
Xylem is a one way flow
due to their structure and function they are differ from each other
lenticel
Periderm, also known as bark is the outermost layer of stems and roots of woody plants.
The periderm is composed of three layers: cork (phellem) on the outside, cork cambium (phellogen) in the middle, and phelloderm on the inside. The periderm serves as a protective layer in woody plants to replace the epidermis as the plant matures.
Secondary growth in cortical region forms secondary cortex inside and periderm outside the cortical cambium
Lenticel
What role does the periderms play in
The epidermis is the outermost layer of cells in plants, responsible for protection and gas exchange. Periderm is a secondary tissue that replaces the epidermis in woody plants for protection and healing.
In older woody plants, the epidermis of the stem is replaced by periderm, which includes tissues such as cork cambium, cork cells, and phelloderm. Periderm helps protect the stem and replaces the functions of the epidermis as the plant matures and its stems thicken.
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The protective outer layers of a plant are composed of dermal tissue, which includes the epidermis and periderm. The epidermis is the outermost layer of cells that covers young plant parts, while the periderm replaces the epidermis in older, woody plant parts. Dermal tissue provides a protective barrier against physical damage, pests, and pathogens.
The skin of a plant is called dermal tissue. This tissue is made up of epidermis and periderm which together cover and protect the plant.
Periderm is another term for tree bark. It comprises tissue surrounding cork cambium.