Plant Permanent Tissues

These flashcards cover the key concepts of permanent tissues in plants, their classifications, types, structures and functions.

What are permanent tissues in plants?

Permanent tissues are types of plant tissues composed of mature, differentiated cells that have lost the ability to divide and have specific functions.

What are the two main classifications of permanent tissues?

Simple permanent tissues and complex permanent tissues.

What are the three types of simple permanent tissues?

Parenchyma, Collenchyma, and Sclerenchyma.

What is the main function of parenchyma cells?

Parenchyma cells are primarily involved in storage, photosynthesis, and transport of water.

Describe the structure of parenchyma cells.

Parenchyma cells have thin cell walls, prominent protoplasts, and can have large central vacuoles for storage.

What type of parenchyma cell is responsible for photosynthesis?

Chlorenchyma, which contains chloroplasts.

What is the role of aerenchyma in aquatic plants?

Aerenchyma provides buoyancy and facilitates the diffusion of gases.

What distinguishes collenchyma cells from other types of permanent tissues?

Collenchyma cells have irregularly thickened cell walls that provide flexibility and support.

What are the four types of collenchyma based on cell wall thickness and arrangement?

Angular collenchyma, Annular collenchyma, Tangential collenchyma, Lacunar collenchyma.

What is the main function of sclerenchyma cells?

Sclerenchyma cells provide rigid support and protection to plant tissues.

How are sclerenchyma cells structurally different from other cell types?

Sclerenchyma cells have thick, lignified walls and are usually dead at maturity.

What are the two types of sclerenchyma cells?

Sclereids and Fibers.

What are the five types of fibers found in sclerenchyma?

Wood Fibres, Bast Fibres, Surface Fibres, Mesocarp Fibres, Leaf Fibres.

How do collenchyma cells contribute to plant structure?

They provide flexibility and support to young growing parts of the plant.

What is the significance of chloroplasts in parenchyma cells?

Chloroplasts allow parenchyma cells to perform photosynthesis.

What is the primary role of vascular parenchyma?

Vascular parenchyma provides nutrients to the vascular tissues.

What role do vacuoles play in parenchyma cells?

Vacuoles store water, ions, and other substances for plant survival.