Plant Form: Cells, Tissues, Organs

Flashcards covering key terms and definitions related to plant cell types, structures, and functions.

Parenchyma cells

Most abundant type of plant cell, performing metabolic functions and capable of division.

Collenchyma cells

Lack a secondary cell wall and provide flexible support in growing plant parts.

Sclerenchyma cells

Have thick secondary cell walls, usually dead at maturity, acting as a rigid support skeleton.

Xylem

Water-conducting tissue made of tracheids and vessel elements, dead at maturity.

Phloem

Food-conducting tissue made of sieve-tube elements and companion cells, alive at maturity.

Plasmodesmata

Openings in cell walls allowing communication and material exchange between adjacent plant cells.

Primary cell wall

The outermost layer of a plant cell wall, flexible and provides initial support.

Secondary cell wall

A tough layer inside the primary cell wall, usually strengthened with lignin.

Middle lamella

A sticky layer between adjacent plant cells.

Stomata

Openings on plant surfaces that allow gas exchange, regulated by guard cells.

What are the main parts of a plant's structure?

The main parts of a plant's structure include the roots, stem, leaves, flowers, and fruit.