British Science Week

Primary 5 were learning about seed dispersal. Seed dispersal is the movement of seeds away from the parent plant and, like pollination, is a process that is vital to the survival of plant species.

We focussed on 3 main methods of dispersal; wind, water and by animals. We watched 3 videos and discussed and shared our reason as to why each dispersal method was successful. It was noticed that dandelions are light and have  parachute like qualities, which make them fly in the wind. Burdocks have hooks which cling to animals and sea beans have a waxy, waterproof layer that survives in water.

Each group were given a small pom pom and were challenged to design their very own seed which would disperse in either, wind, water or by animals. Firstly they had to work as a group and design their seed, keeping in mind what they had previously learned about successful dispersal methods. They then created their design by using a variety of arts and crafts resources.

We tested the prototypes at the end and discussed which seeds were successful and why.

‘We used tin foil to make it water proof and we wanted to add spikes so that any animal in the water wouldn’t want to eat it so that it would get further.’ Ella.

‘We used tissue paper to create a parachute, similar to the dandelion so that it would fly in the wind.’ Hannah P.

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