Question

........... have guard cells.

• A. Lenticel
• B. Parenchyma
• C. Stomata
• D. Chloroplast

Answer 1

The correct option is C Stomata

• Stomata are guarded by guard cells. Stomata are minute pore-like structures present on the underside of the leaves. They are involved in gaseous exchange and transpiration.
• Transpiration is a process in which the moisture is carried from roots to the leaves and then evaporation occurs from the stomata. Stomatal pores are largest when water is freely available.
• Guard cells become turgid keeping the stomatal pore wide open when water is freely available. Guard cells become flaccid closing the stomatal pore when water is scarcely available. This way, guard cells check for water loss from the plant body.
  Therefore, option C is correct.