cabbage,food colouring and water experiment why plants need water

Plants Absorbing Water 

Aim:

To colour celery or cabbage leaves - Try and see how plants absorb water

Materials 

Glass jars x4 

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

Explanation 

Part 1 - Explain why plants need water

Plants need water because otherwise they will die of dehydration because water makes up 95% of the body. Water helps plants keep hydrated,healthy and alive. If water wasn’t a thing nothing would live and it wouldn’t grow at all. They would have nothing to drink. And the bees would have no pollen to collect they wouldn’t even be alive.   

Part 2 - How they absorb water

They absorb water through their roots,stems and leaves. The root hair is the main source of how plants absorb water. The root hair absorbs the water by cell membranes in the soil. Then the root hair cells become turgid (swollen).