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Which of the following statements is not true for stomatal apparatus?
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- Inner walls of guard cells are thick
- Guard cells invariably possess chloroplasts and mitochondria
- Guard cells are always surrounded by subsidiary cells
- Stomata are involved in gaseous exchange
Correct Option: C
Sometimes, a few epidermal cells in the vicinity of the guard cells become specialised in their shape and size and are known as subsidiary cells or accessory cells.
