Botany lecture notes

Collenchyma Cells in Plants: Structure, Classification and Functions with PPT

Functions of collechyma

Collenchyma
(Structure, Types and Functions of Collenchymatous Cells in Plants)

What is collenchyma?

Ø  Collenchyma is a simple permanent tissue in plants.

Ø  They are living cells with prominent nucleus and all the cell organelles.

Ø  Each collenchymatous cell is with a large and prominent vacuole in the centre.

Ø  The vacuole is filled with many secondary metabolites.

Ø  Unlike parenchyma, the collenchyma cells possess thick primary cell wall.

Ø  Thick walls are NOT lignified.

Ø  The thick wall is due to the deposition of hemicellulose and pectin along with cellulose.

Ø  Wall thickening in collenchyma is greatly affected by the extent of mechanical stress.

Ø  A plant part which in severe stress or motion due to high wind are more likely to possess more thickened collenchyma.

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Botany lecture notes

Difference between Parenchyma and Collenchyma: A Comparison Table


collenchyma vs parenchyma

Parenchyma vs Collenchyma
(Similarities and Differences between Parenchyma and Collenchyma)

Parenchyma and Collenchyma are the Simple tissue System in Plants. The present post describes the similarities and differences between PARENCHYMA and COLLENCHYMA.

Similarities between Parenchyma and Collenchyma

Ø  Both parenchyma and collenchyma are simple permanent tissues in the plants.

Ø  Both are differentiated cells.

Ø  Both are living cells with primary cell wall.

Ø  Both cells possess cytoplasm and cell organelles including the nucleus.

Ø  Both are the components of ground tissue system in plants.

Ø  Both cells can do photosynthesis if chloroplasts are present in them.

Ø  Both can store food materials as starch grains.

Ø  Pits are absent in the cell wall of both parenchyma and collenchyma.

Ø  Plasmodesmatal connections between cells occur in both cells.

Differences between Parenchyma and Collenchyma

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