Question

Differentiate between sclerenchymatous and parenchymatous tissues.

Answer 1

$\begin{array}{cc}\text{Parenchyma}& \text{Sclerenchyma}\\ \text{(1) Cells are thin walled and unspecialised.}& \text{(1) Cells are thick walled and lignified.}\\ \text{(2) These are living cells.}& \text{(2) Tissues are made up of dead cells.}\\ \text{(3) Cells are usually loosely packed with large}& \text{(3) No intercellular spaces between the cells are}\\ \text{intercellular space.}& \text{found.}\\ \text{(4) Stores nutrient and water in stem and roots.}& \text{(4) Provides strength to the plant parts.}\\ \text{(5) Some cells contain chlorophyll called}& \text{(5)The cells are long and narrow, make the plant}\\ \text{chlorenchyma and perform photosynthesis. Other}& \text{hard and stiff. The tissue is present in the stem}\\ \text{cells have large air cavities called aerenchyma}& \text{around vascular bundles, in veines of leaves and}\\ \text{which provide buoyancy to the hydrophytic plants.}& \text{hard covering of seeds and nuts.}\end{array}$