PLANTS-OUR GREEN FRIENDS UDITI SHARMA

​IT IS A FLAT PART OF THE LEAF. SOME LEAVES HAVE A BROAD LEAF BLADE WHILE OTHERS HAVE A NARROW ONE

MOST LEAVES USUALLY HAVE A MAIN VEIN AND MANY SIDE VEINS. THESE VEINS ARE INVOLVED IN TRANSPORT OF SUBSTANCES. THEY CARY -

• WATER AND MINERALS TO THE PLANT

• PREPARED FOOD FROM THE LEAF TO THE OTHER PARTS OF THE PLANT

​THE STALK ATTACHES THE LEAF TO THE SYSTEM

​THE LOWER SURFACE OF THE LEAF USUALLY CONTAINS TINY OPENINGS CALLED STOMATA. THE STOMATA HELPS THE LEAF TO TAKE IN AIR

​LEAVES ARE GREEN IN COLOUR BECAUSE THEY CONTAIN A SUBSTANCE CALLED CHLOROPHYLL . LEAVES REQUIRES WATER , CARBONDIOXIDE AND SUNLIGHT TO PREPARE FOOD

• WATER IS ABSORBED BY THE ROOTS. THE STEM CARRIES WATER FROM THE ROOTS TO LEAVES

• CARBONDIOXIDE IS PRSENT IN THE AIR. IT ENTERS THE LEAF THROUGH THE STOMATA

• CHLOROPHYLL PRESENT IN THE LEAVES HELPS THEM TO TRAP SUNLIGHT.

​PLANTS PREPARE FOOD IN THE FORM OF SUGAR WHICH IS USED BY THE PLANTS IN A NUMBER OF WAYS LIKE

• SOME OF THE FOOD IS BURNT FOR THE ENERGY

• SOME OF THE FOOD IS USED FOR GROWTH

• THE EXTRA FOOD IS STORED IN THE FORM OF STARCH IN VARIOUS PARTS OF PLANT