Algonquin College Health Program Assessment (AC-HPAT) Practice Exam

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What is the primary function of leaves in plants?

  1. Support and structure

  2. Reproduction

  3. Photosynthesis

  4. Water storage

The correct answer is: Photosynthesis

The primary function of leaves in plants is photosynthesis, which is the process by which green plants, algae, and some bacteria convert light energy into chemical energy. During this process, leaves utilize sunlight, carbon dioxide from the air, and water absorbed by the roots to produce glucose and oxygen. Chlorophyll, the pigment found in leaf cells, plays a crucial role by capturing sunlight, making leaves essential for energy production and growth in plants. The evolutionary adaptation of leaves to perform photosynthesis makes them vital for the survival of the plant and contributes significantly to the ecosystem by generating oxygen and serving as the base of the food chain.

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