Biology · KS3 Y8 · Reproduction & Genetics
Seed dispersal
Seed dispersalFree2:18Heddy Score 3 of 7, below the standard
What you need to know
- A plant has to get its seeds away from the parent if the seedlings are to survive.
- A sea heart floats because the pod traps air, so water can carry it.
- A coco de mer is so heavy that it stays under the parent and lives on a large food store until a gap of light opens.
- Orchid seeds are light enough for air currents to carry them, and some start life on branches rather than in soil.
In this clip
Runs 2:18, from 0:00 to 2:18 of the full video.
Heddy ScoreSeven checks every clip must pass before students see it: trusted, on the map, accurate, focused, accessible, safe, and proven by students.3/7, Below the standard
See the seven stars
- Trusted source · passed. The creator's own upload, live and playable here.
- On the map · not judged yet. A teacher watched it: it mainly teaches this map topic.
- Spec-true · not judged yet. Accurate, and right for the current UK specification.
- Focused · passed. One idea, short enough to watch in one go.
- Accessible · passed. Good captions, clear sound and pictures.
- Safe for children · not judged yet. Right for 11 to 16 year olds, with no sales pitch.
- Proven · not judged yet. Earned from our students: they learn from it, find it helpful and watch it to the end.
Our students
Not enough students yet
Our own students' answers. These are what move ★7 Proven.On YouTube
How the Heddy Score works1.6M views · 38.8K likes · BBC Earth 14.6M subscribers
As reported by YouTube on 2026-11-02. Not part of the Heddy Score.Why we picked it
Three real seeds show water dispersal, staying put with a food store, and wind dispersal.
BBC Earth on YouTubechecked 2026-10-20
Plays from youtube-nocookie.com. No YouTube cookies until you press play.