Plants, roots and photosynthesis

Explore how plants take in water and make food.

Understand the idea

Roots absorb water and mineral nutrients from the soil. In green parts, plants use light energy to make sugars from carbon dioxide and water. This process is called photosynthesis and releases oxygen. Plants also respire, including at night.

See a worked example

A leaf receives sunlight and carbon dioxide. Water travels from the roots to support photosynthesis.

A useful check

Soil supplies water and minerals, not ready-made sugar food. Plants make sugars through photosynthesis.

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