🦊 In this GCSE Biology video, we explain phototropism, which is a growth response where plant shoots and roots grow towards or away from light using hormones like auxin. Specifically, plant stems display positive phototropism by growing towards light sources because auxin accumulates on the shaded side of the stem, promoting faster cell elongation there and causing the stem to bend towards the light. Conversely, roots exhibit negative phototropism, growing away from light as auxin accumulation on the shaded side inhibits cell elongation, causing the roots to bend downwards into the soil.

👋 Hi, we’re Launchpad Learning. We’re the same team behind SnapRevise, the UK’s leading A-level revision platform. For the last 2 years, we’ve been working behind the scenes on creating the UK’s smartest and most fun GCSE revision platform which will be available soon.

👉 Subscribe to our channel to stay in the loop about our launch date    / @snaprevise