We have been learning about plants in Science in Pearl Class. We know that seeds can grow into lots of exciting things such as fruit, vegetables and flowers. Seeds come in all different shapes and sizes.
We wanted to know what the different parts of a plant are called as it stars to grow.
Then we though about what plants need to grow in. We learnt that all plants need air, water and sunlight to grow. But do all plants need soil to grow in? We set up lots of different seeds to investigate what would happen to the seeds without any soil. Would they grow? Take a look below to find out our findings…
Finally we though about what might happen if we took away just one of things that plants need to grow and investigate what happened. We set up different pots and planted both seeds and bulbs inside to see what would happen in the different circumstances. We made predictions as to what we thought might happen to each pot. Here is what we did:
Pot 1 – Sand instead of soil
Pot 2 – No air (water, soil and light)
Pot 3 – No water (air, light and soil)
Pot 4 – No light (soil, water and air)
Pot 5 – Control (air, light and water)
Every week, we kept a seed and bulb diary so we could see what happened to the seeds and bulbs on a weekly basis. Here is what we found out.
Pot 1 – Neither the seed or bulb grew in the sand.
Pot 2 – Neither the seed or bulb grew with no air.
Pot 3 – Surprisingly both the seed and bulb grew in the soil with no water. (We discussed that the soil might have had water in it already to help the seed and bulb grow)
Pot 4 – Both the seed and bulb grew in the dark but they were both yellow.
Pot 5 – Both the seed and bulb grew as predicted.
We found out:
- If you put a plant in the dark, it will grow but it will turn yellow. Plants need sunlight to help it to make food in its leaves and keep it green. Once we completed our investigation, we left it out in the sunlight and it started to turn green again!
- If you put a lid on a plant and into a container, it won’t grow however it will go mouldy. When we took the lid off to check, the smell was really gross!
- We were surprised that the seed and bulb didn’t grow in the sand. If we were to do this again, we would try it out again or try plant it in different things like custard or pebbles.