General Science • BiologyEasy
What is the primary function of stomata located predominantly on the epidermis of plant leaves?
A. Absorption of mineral salts from soil water
B. Exchange of gases like carbon dioxide and oxygen for photosynthesis and respiration✓ Correct Answer
C. Storage of excess starch reserves during nighttime
D. Anchoring the plant shoot firmly to atmospheric structures
💡 Solution & Explanation
Stomata are microscopic pores bordered by guard cells that facilitate gaseous exchange between the internal leaf tissues and the atmosphere, allowing carbon dioxide intake and oxygen release, alongside transpiration. Guard cells regulate pore opening and closing by changing turgor pressure. Transpiration creates a suction pull that draws water upward through xylem vessels.
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