Epidermal Tissue · Botany

What is a stomatal apparatus?

  1. A stomatal pore with its guard cells and often subsidiary cells
  2. A group of xylem vessels arranged in a circular ring around the stem
  3. A layer of cork cells outside the stem
  4. A cluster of root hairs around the root cap
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Correct answer: A stomatal pore with its guard cells and often subsidiary cells

The stomatal apparatus includes the stomatal pore and the guard cells that surround it. In many plants, subsidiary cells are also associated with the guard cells.

Difficulty: Medium Question 16 of 20

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