Plants Absorbing water
Materials
Glass jars x 4
Celery
Cabbage leaves
4 different colours of food colouring
Water
Scissors/knife/chopping board to cut the celery
Method-
Fill up 4 glass jars up to around half way
Put approximately 10 drops of different coloured food colouring into each jar
Place a celery stick or a cabbage leaf into each jar
Aim-
To colour celery or cabbage leaves
Explanation
Part 1 - Explain why plants need water
Plants, like all living things, need water to survive. They use water to maintain their shape and save energy through photosynthesis, they also collect dissolved nutrients from the soil, their body needs to stay hydrated with water,It helps them stay strong,flexible and helps their body stand and on warm days water helps the plants stay cool.
Part 2 - How they absorb water-
Plants obtain water from the soil. The roots are the transportation system to get the water from the soil to the parts of the plant where it is needed the most. Then the roots branch off into smaller and smaller and the tiniest roots are called root hairs. These root hairs consume the water into the system, which then carries the water to the rest of the plant. Once a water molecule escapes out into the atmosphere. It pulls the next molecule below it to take its place. Then it pulls the one under it to take its place that continues on forever and ever. This job of attracting molecules to the others place is called cohesion. Due to this cohesion, water molecules stick to each other forming a continuous chain.
