Question

Which of the following is not a feature or function of epidermis?

• A. Thick walled cells
• B. Protection from mechanical injury
• C. Gaseous exchange through stomatal pores
• D. Trichomes and glandular hairs

Answer 1

The correct option is A Thick walled cells

• The epidermis is the outermost covering and acts as a protective layer. it is formed initially from the protoderm.
• These are thin-walled as they are generally made up of parenchymatous cells.
• The epidermis serves several functions- it protects against mechanical injury water loss, regulates gas exchange, secretes metabolic compounds, and (especially in roots) absorbs water and mineral nutrients.
• The epidermal tissue includes several differentiated cell types - guard cells, subsidiary cells, and epidermal hairs (trichomes). They have thin-walled cells.

Therefore, the correct answer is option A.