The following experiment is a fun and easy way to see the effects of gravitropism on a plant
These are the materials needed to make your own upside down plant:
-Two sponges
-Small bean plant
-String
-Scissors
-Water
-Thumbtack
Methods:
Pour water over
sponges until they are moist.
Take
small potted plant out of pot and remove much of the soil.
(We used a small bean plant that we planted in a plastic
cup.)
Sandwich the root
ball of the plant between two sponges.
Tie the
string around the sponges lengthwise and widthwise. Then
hang the plant upside down in a sunny window with a tray
under it to catch excess water.
Keep the sponges
watered and in a couple of days the plant will begin to
turn around and grow upright!!
To see gravitropism
in action press play and watch the plant grow
upwards.