Question

The number of stomatal pores per $c{m}^2$ of leaf surface are in the range of

• A. 1000 - 60,000
• B. 10 - 1000
• C. 50,000 - 100,000
• D. 50 - 100

Answer 1

The correct option is A 1000 - 60,000

The stoma is the tiny pores can be seen on the epidermal layer of the leaves which is meant to be a gaseous exchange. Each stoma is guarded by a pair of specialized cells called guard cells. These are the guard cells which regulates the opening and closing of stomata. The size of the stoma pores ranges from 3-12 μm in width and 10-14 μm in length. The number of such stomatal tiny pores varies from 1000 - 60,000 per cm${}^2$ of leaf surface. The total area of the pore is approximately 1-2% of total leaf area of the leaf.

So, the correct answer is option A.