Parenchyma, collenchyma, sclerenchyma

What do transfer cells include?

Glandular cells that secrete nectar, fragrances, mucilage, resins, and oils.

What is the role of sclerenchyma cells?

Important for strengthening and supporting plant parts that have ceased elongating.

What are the functions of parenchyma cells?

Involved in photosynthesis, storage, secretion, and water & food movement.

Why are parenchyma cells relatively inexpensive to build?

Little glucose is expended in constructing thin walls.

What is the structure of fibers?

Long and flexible.

What is chlorenchyma?

Photosynthetic parenchyma cells.

What is the role of parenchyma in regeneration and wound healing?

Plays an important role in regeneration and wound healing.

What is the function of sclereids?

Provide protection, e.g. shells.

What is the function of fibers?

Provide strength and flexibility, e.g. hemp.

What are the two types of sclerenchyma cells?

Sclereids and fibers.

What is the structure of sclereids?

Short, cuboidal, inflexible, and brittle.

What are transfer cells?

Specialized parenchyma cells that mediate short distance transport of material.

What happens to the protoplast in sclerenchyma cells?

The protoplast usually dies after the secondary wall has been deposited.

How do sclerenchyma cells prevent protoplast expansion?

The thick secondary wall prevents the protoplast from expanding when water is absorbed.

What is sclerenchyma?

Tissue characterized by thick, often lignified secondary walls.

What is parenchyma?

Tissue found in cortex, pith, leaf mesophyll, and fruit flesh.

What is collenchyma?

Tissue found in discrete strands or continuous cylinders beneath the epidermis.

What is the structure of parenchyma cells?

Usually have thin primary walls and some function by dying at maturity.

What is the function of collenchyma cells?

Well-adapted for the support of young, growing organs.