Question

Cells of parenchymatous tissues are characterized by

• A. Uniform thickening
• B. Thickening at the corners
• C. Lignified walls
• D. Inter-cellular spaces

Answer 1

The correct option is D Inter-cellular spaces

Parenchyma is a simple tissue which is composed of thin-walled polyhedral, isodiametric living cells with sufficient cytoplasm and one or more nuclei. These tissues serve the purpose of storage, photosynthesis gaseous exchange and much more but do not provide mechanical support to the plant and hence, lack cell wall thickening or lignin deposition which is a characteristic feature of mechanical tissues. They have cellulosic cell wall without any thickening or lignin deposition. Parenchymatous cells are characterized by the presence of well-developed intercellular spaces, as in the case of aerenchyma.
Therefore, the correct answer is option D.