AP BIOLOGY

Detailed explanation-1: -Statement 2: Tiny pores called stomata facilitate the gaseous exchange.

Detailed explanation-2: -Lenticels permit the exchange of gases between the environment and the internal tissue spaces of the organs (stems and some fruits) (Fig. 6.2). They permit the entrance of oxygen and simultaneously the output of carbon dioxide and water vapor.

Detailed explanation-3: -Stomata (noun, “STO-mah-tah”, singular “stoma”) These are the small pores in plant stems or leaves that allow carbon dioxide in and oxygen and water vapor out. Each tiny hole is surrounded by a pair of cells called guard cells. These cells control whether a stoma is open or closed.

Detailed explanation-4: -Lenticels are small pores on the surface of the stems and roots of plants. The exchange of gases like carbon dioxide and oxygen takes place in the stems and roots through the cells of lenticels by diffusion.

Detailed explanation-5: -A lenticel is a porous tissue made up of vast intercellular gaps between cells. On stems and roots, lenticels appear as elevated circular, oval, or elongated patches. Lenticels allow gases to pass between the atmosphere and the organs’ interior tissues.