Sclerenchyma
Definition
A plant tissue composed of thick-walled, lignified cells including fibres and stone cells (sclereids). Sclerenchyma cells are physically resistant to digestion and retain their distinctive shapes in gastric contents; they are characteristic of specific foods, such as the gritty sclereids in pear flesh or the fibrous bundles in celery.
- Cell types
- Two forms: elongated fibres (in bundles) and irregular sclereids (scattered)
- Key characteristic
- Thick, lignified secondary walls that resist digestion and decay
- Forensic use
- Identifies specific foods in gastric contents and archaeological plant remains
Common questions
What are the two types of sclerenchyma cells?+
Fibres and sclereids (also called stone cells). Fibres are elongated and clustered together, while sclereids are more irregular and scattered throughout plant tissue. Both have thick, lignified walls that give them structural support.
Why is sclerenchyma important in stomach content analysis?+
Sclerenchyma cells resist digestion and keep their distinctive shapes in gastric contents. This makes them useful markers for identifying specific foods. For example, pears contain gritty sclereids and celery has fibrous bundles that remain recognizable even after stomach acid exposure.
How does sclerenchyma survive in archaeological or degraded material?+
The thick, lignified cell walls are physically resistant to decay and environmental breakdown. This persistence makes sclerenchyma useful for studying ancient diets and plant use, even in poorly preserved remains.
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Explained in these topics
- Gastric Plant Matter and Stomach Content AnalysisA plant tissue composed of thick-walled, lignified cells including fibres and stone cells (sclereids). Sclerenchyma cells are physically resistant to digestion...
- Plant Anatomy and Morphology for IdentificationCells with thick, lignified secondary walls that provide mechanical support. Fibres and sclereids are the two forms. Fibres are elongated and appear in bundles...