which of these cells of the dermal tissue of plants prevent water loss and control gas exchange?\nphloem…
which of these cells of the dermal tissue of plants prevent water loss and control gas exchange?\nphloem cells\ncompanion cells\nparenchyma cells\nguard cells
Answer
Brief Explanations:
Guard cells surround stomata. They regulate stomatal opening and closing, controlling gas - exchange (like intake of CO₂ and release of O₂) and preventing excessive water loss through transpiration. Phloem cells are involved in transporting organic nutrients, companion cells assist sieve - tube elements in phloem, and parenchyma cells have various functions like storage but not specific to water loss prevention and gas - exchange control like guard cells.
Answer:
D. guard cells