★ Life Processes Quiz
Which structures open and close stomata to allow gas exchange but prevent water loss in leaves?
A. Epidermis
B. Vascular tissue
C. Guard cells
D. Spongy mesophyll
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What is digestion?
A. Breaking down food into molecules usable by cells
B. Taking in food or drink
C. Maintaining a stable internal environment
D. Taking in or releasing of oxygen or carbon dioxide
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