Problemas
6. Which structure allows for the diffusion of important gases (carbon dioxide and oxygen) into and out of leaves? A. upper epidermis B. phloem C. stomata D. guard cells
Roztwór
Eulalia
maestro · Tutor durante 5 años
4.7
(215 Votos)
Respuesta
'C'
Explicación
## Step 1The question is asking about the structure in leaves that allows for the diffusion of gases, specifically carbon dioxide and oxygen. ## Step 2The upper epidermis is the outermost layer of cells in the leaf, which primarily serves as a protective layer. It does not facilitate the diffusion of gases.## Step 3Phloem is a type of tissue in vascular plants that conducts sugars and other metabolic products downward from the leaves. It is not involved in the diffusion of gases.## Step 4Stomata are small openings or pores, primarily found on the epidermis of leaves and stems. They are surrounded by a pair of guard cells that control the opening and closing of the stomata. Stomata are the main sites for gas exchange in plants, allowing for the diffusion of gases like carbon dioxide and oxygen.## Step 5Guard cells are specialized cells in the epidermis of leaves, stems, and other organs that are used to control the opening and closing of stomata. While they play a role in gas exchange, they are not the primary structure that allows for the diffusion of gases.## Step 6Based on the above analysis, the correct answer is C. stomata, as they are the primary structure that allows for the diffusion of gases into and out of leaves.