Kaplan Nursing Entrance Exam Practice 2026 – Comprehensive Prep

Question: 1 / 2700

Which part of the plant is primarily responsible for photosynthesis?

Roots

Stems

Leaves

The part of the plant primarily responsible for photosynthesis is the leaves. Leaves contain a high concentration of chlorophyll, the green pigment that captures sunlight. During photosynthesis, chlorophyll absorbs light energy, which is then used to convert carbon dioxide from the air and water from the soil into glucose and oxygen. This process is crucial as it not only provides food for the plant but also produces oxygen, which is essential for the survival of most living organisms.

While roots, stems, and flowers play important roles in the plant’s overall growth and reproduction, they are not the primary sites of photosynthesis. Roots primarily absorb water and nutrients from the soil, stems support the plant and transport water and nutrients between roots and leaves, and flowers are involved in reproduction but do not contribute to the photosynthetic process.

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