1.

Write some difference between Parenchyma and collenchyma tissues.

Answer»

Difference Between Parenchyma and Collenchyma Cells :

Parenchyma Cells

Collenchyma Cells
What it means
Originate from ground and protoderm meristemsOriginate from pro-cambium. Epidermal layer of plants are composed of collenchyma cells
Location
Found in every delicate plant partSpecifically found in leaves, stems and petioles
Cell type
Living and unspecialized cellsLiving and specialized cells
Shape of the cell
Isodiametric generally, may vary in shapeElongated cells
Cell wall
  • Present and thin-walled
  • Made of cellulose 
  • Present, uneven cell wall
  • Made of pectin and hemicellulose
Intercellular spaces
Present between cellsLess space present
Function
  • Food storage
  • Gaseous exchange
  • Photosynthesis
  • Renders mechanical support
  • Elasticity


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