describe strycture and function of stomata on leaves kept in saline.
Added by Jason H.
Step 1
Each stoma is surrounded by a pair of specialized cells called guard cells. These guard cells control the opening and closing of the stomatal pore. The structure of stomata includes: - **Stomatal pore**: The actual opening that allows gas exchange. - **Guard Show more…
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Examine this image taken from a leaf surface. Which one of the following statements is true? Increased turgidity allows the guard cells to expand and increase the width of the pore, because the guard cells are not contacted by parenchyma cells of palisade mesophyll beneath them. In floating hydrophytes like water lilies, the structure shown here occurs only on the abaxial epidermis of leaves. This image shows a stomate comprised of two subsidiary cells that line a central pore, which is called a stoma. In submerged leaves of hydrophytes like waterweed (Elodea), the structure shown here is abundant. With the guard cells being kidney-shaped, this image was likely taken from the leaf of a grass plant rather than from a dicot leaf.
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Predict: How will your tonicity affect the stomata of your leaf? Hypotonic Solution Isotonic Solution Hypertonic Solution 1. Describe the main function of guard cells, stomata, and chloroplasts. 2. Describe and draw the leaf venation for the Brassica rapa and corn leaf. How are they different?
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On a plant, stomata are small openings that regulate the passage of air and water vapor to and from the plant. Generally, the stomata open during sunlight and exchange gases with the atmosphere. The stomata of a few specialized desert plants can only open at night. The best explanation for the pattern of stomata opening and closing is that the desert plants are adapted to protect against (1) harmful insects (2) dust particles (3) destructive plant diseases (4) excess water loss (5) total energy loss.
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