[Campbell Biology P.830] Based on the leaf cross-section diagram and accompanying text in Co... | Practice Question

Based on the leaf cross-section diagram and accompanying text in Concept 35.3, which structure is primarily responsible for regulating gaseous exchange in the leaf?

  • A: Palisade mesophyll
  • B: Spongy mesophyll
  • C: Stoma, formed by guard cells
  • D: Xylem

Explanation

Concept 35.3 states: 'Stomata, epidermal pores formed by pairs of guard cells, allow for gaseous exchange and are major avenues for water loss.' The diagram clearly labels stomata and guard cells.