Question

Which structure out of (i), (ii), (iii) and (iv) marked in the given figure should be labelled as stoma?

• A. (i)
• B. (ii)
• C. (iii)
• D. (iv)

Answer 1

The correct option is C (iii)

• (i) - cytoplasm; (ii) nucleus; (iii) stoma; (iv) chloroplast.
• A stoma is a pore, found in the epidermis of leaves, stems and other organs and are used to control gaseous exchange.
• The pore is surrounded by a pair of specialized parenchyma cells known as guard cells that are responsible for regulating the size of the opening.
• Hence the correct option is C.