Kaplan Nursing Entrance Exam Practice 2026 – Comprehensive Prep

Question: 1 / 2700

In which part of the plant does photosynthesis predominantly occur?

Root

Stem

Chloroplast

Photosynthesis predominantly occurs in the chloroplasts, which are specialized organelles found mainly in the cells of green plant tissues. Chloroplasts contain chlorophyll, the pigment that captures light energy from the sun, which is essential for converting carbon dioxide and water into glucose and oxygen. This process is crucial for the plant's energy production and growth.

While roots and stems play important roles in water and nutrient uptake and support, respectively, they do not primarily carry out photosynthesis. The leaf epidermis, which is the outer layer of leaf tissue, may facilitate gas exchange through structures known as stomata but does not conduct photosynthesis itself. Therefore, understanding the specific function of chloroplasts within the context of the plant structure clarifies why this is the correct answer.

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Leaf epidermis

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