MCQ
Stomata open and close due to:
- APressure of gases inside the leaves.
- BGenetic clock.
- CIrcadian rhythm.
- ✓Turgor pressure of guard cells.
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$(i)$ Provides shape to the cell.
$(ii)$ Protects the cell from mechanical damage and infection.
$(iii)$ Helps in cell to cell interaction.
$(iv)$ Provides barrier to undesirable macromolecules.