Which plant structures function as gateways for gas exchange?

General Science ·Previously asked in JKSSB Laboratory Attendant 2026

View the full solved paper: JKSSB Laboratory Attendant – 10 May 2026

Question

Which plant structures function as gateways for gas exchange?

  1. A. Lenticels
  2. B. Stomata (Correct answer)
  3. C. Xylem
  4. D. Phloem

Correct Answer

Option B — Stomata

Detailed Solution & Explanation

The correct answer is Stomata.

Key Points

  • Stomata are the primary openings in leaves for gas exchange (CO2 and O2).
  • Lenticels allow gas exchange in woody stems but are secondary.

Topics covered: Biology Plant Physiology