How Stomata are blocked?

Stomata are small pores present in the leaf. They are surrounded by guard cells which help in closening and opening of stomata. In low light the guard cells lose water and become flaccid, causing the stomata to close. The leaves of plants die when stomata are blocked and also the photosynthesis will stop because the CO₂ level will decline within the leaf, stopping the reactions that are light-independent.

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