Parenchyma
Living, thin-walled cells involved in storage, photosynthesis, and secretion.
What is Parenchyma?
A type of simple permanent plant tissue composed of living, thin-walled cells that perform various functions including storage, photosynthesis, and secretion.
Key points
- Identify the characteristic features of parenchyma cells.
- Describe the distribution of parenchyma in different plant organs.
- Explain the various functions performed by parenchyma tissue.
- Differentiate parenchyma from other simple permanent tissues.
Common exam trap
Confusing parenchyma with other simple permanent tissues like collenchyma and sclerenchyma based solely on cell wall thickness.
Definitions
- Term
Parenchyma
- Meaning
A type of simple permanent plant tissue composed of living, thin-walled cells that perform various functions including storage, photosynthesis, and secretion.
- Term
Chlorenchyma
- Meaning
A specialized type of parenchyma tissue containing chloroplasts, primarily involved in photosynthesis.
- Term
Aerenchyma
- Meaning
A modified parenchyma tissue characterized by large intercellular air spaces, found in aquatic plants to aid in buoyancy and gas exchange.
- Term
Intercellular spaces
- Meaning
Gaps or spaces between adjacent cells, which can be filled with air or water.
Learning objectives
Identify the characteristic features of parenchyma cells.
Describe the distribution of parenchyma in different plant organs.
Explain the various functions performed by parenchyma tissue.
Differentiate parenchyma from other simple permanent tissues.
Understand the role of specialized parenchyma like chlorenchyma and aerenchyma.
Prerequisites
Plant Cell Structure (Cell wall, cytoplasm, nucleus, vacuole)
Plant Tissues (Simple vs. Complex tissues)
Basic Photosynthesis
Plant Anatomy (Stem, Root, Leaf structure)
Common mistakes
Confusing parenchyma with other simple permanent tissues like collenchyma and sclerenchyma based solely on cell wall thickness.
Overlooking the diverse secretory and regenerative functions of parenchyma.
Assuming parenchyma cells are always isodiametric; they can be oval, spherical, or even polygonal.
Keywords
Parenchyma
Plant Tissues
Simple Permanent Tissue
Storage
Photosynthesis
Secretion
Chlorenchyma
Aerenchyma
Plant Anatomy
Living Cells
Practice preview
When parenchyma cells contain chloroplasts, they are specifically referred to as:…
easy
Which of the following is a primary function of parenchyma cells?…
easy
Parenchyma cells are characterized by:…
easy