In C₃ Plants, the ____ Are Typically Closed at Night

question 78

Multiple Choice

In C₃ plants, the ____ are typically closed at night and open during the daytime to allow for gas exchange.

• A) grana
• B) stomata
• C) cuticles
• D) epidermis
• E) spongy mesophyll

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Definitions:

Gap Junctions

Specialized intercellular connections that facilitate the direct transfer of ions and small molecules between the cytoplasms of adjacent cells.

Tight Junctions

Specialized connections between neighboring cells that create a barrier to prevent the leakage of molecules across cell layers.

Plasmodesmata

Microscopic channels allowing transport and communication between plant cells, enabling the sharing of water, nutrients, and biochemical signals.