T h e I m p o r t a n c e o f w a t e r t o p l a n t s ( C a p i l l a r y a c t i o n ) Basic needs of Plants P l a n t s n e e d s u n l i g h t t o m a k e t h e i r o w n f o o d . S u n l i g h t g i v e s t h e m w a r m t h a n d e n e r g y t o s u r v i v e . W i t h o u t s u n l i g h t , p l a n t s w i l l n o t g r o w p r o p e r l y , a n d t h e y w i l l b e y e l l o w i s h . P l a n t s n e e d w a t e r t o g r o w . P l a n t s a l s o n e e d w a t e r t o m a k e t h e i r o w n f o o d . W i t h o u t w a t e r , p l a n t s w i l l d r y u p a n d d i e . P l a n t s n e e d c a r b o n d i o x i d e t o m a k e t h e i r o w n f o o d a n d t o b r e a t h e ; t h e y t a k e i n c a r b o n d i o x i d e , a n d r e l e a s e s o x y g e n i n t o t h e a i r . W i t h o u t c a r b o n d i o x i d e , p l a n t s w i l l d i e . E x p e r i m e n t 1 W a l k i n g w a t e r Steps of experiment Set your two identical glasses about 2 inches apart. Pour water into one of the cups until it’s halfway full. Add a few drops of your favorite food coloring to the water. Stir the food coloring until the water is one color. Take a strip of paper towel and fold it until it’s 1 to 2 inches wide. Place one end of the paper towel strip into the colored water and the other end into the empty glas s . L e t t h e m s i t f o r o n e h o u r . R e t u r n t o t h e g l a s s a n d o b s e r v e w h a t h a p p e n e d . present by
Experment 2 Steps of experiment Trim down the stems of the flower so they fit your cups or glasses. Add water to each cup. Then put about 10-15 drops of food coloring in the water and stir around a bit. Add at least one carnation to each glass of colored water. Check in on the flowers every couple of hours and observe any changes Results of experiment How do plants absorb water ? Colour changing flower The coloured water travels up the paper towel by a process called capillary action. The capillary action is the ability of liquid to flow upward, against gravity, in narrow spaces. This is the same thing that helps water climb from a plant roots to the leaves in the tops. Plants absorb water from the soil through capillary action. Plant roots absorb water and minerals from the soil. The water and minerals get transported by Xylem vessels. Xylem will transport water and minerals from the root to the leaves. Without this process, plants can’t make their own food, and their cells will dry up and die. We hope you all enjoy our experiment DON’T FORGET TO WATER YOUR PLANTS