As the sun moves throughout the day, some plants can follow it. this is called solar flexing solar tracking solar watching

Solar tracking

Explanation:

Many plants have the ability to move during the day and stay oriented towards the sun's rays. This phenomenon is called solar tracking.

One of the best known plants for solar tracking is the sunflower, which while the sun moves, so does the sunflower so that its petals remain perpendicular to the sun's rays.

Solar tracking is also used in different systems, such as solar cells  to get greater efficiency.

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