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Living Environment Regents June 2003 Question 57 |
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Diagram A
Structure X is a stoma (plural stomata).
Stomata are microscopic pores surrounded by guard cells in the epidermis of leaves and stems. If these malfunction, the gas exchange between the environment and the interior of the plant will be impeded, which can further lead to withering of the plant.
Diagram B
Structure X is the pancreas.
Pancreas is soft, flattened gland that secretes digestive enzymes and hormones. One of the most important hormones secreted by the pancreas is insulin, which aids in the balance of blood glucose levels. Malfunction of the pancreas may lead to pancreatitis or diabetes mellitus.
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