PLANTS-OUR GREEN FRIENDS UDITI SHARMA

CHAPTER - 1 PLANTS OUR GREEN FRIENDS

​All animal including human beings are depended on plants Plants not only gives us food they gives many more things such as tea ,cooking oil, perfume and etc.

​LEAF AND ITS PART

​Different plants have different leaves. green leaves help to prepare for plant,that's why they are known as kitchen of the plant

​A leaf has some parts like......

​LEAF AND ITS PART

​LEAF BLADE

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

​VEINS

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

​LEAF AND ITS PART

​STALK

​THE STALK ATTACHES THE LEAF TO THE SYSTEM

​STOMATA

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

​LEAF AND ITS PART

​DIAGRAM OF A LEAF

​LEAF -THE FOOD FACTORY

​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.

​LEAF -THE FOOD FACTORY

​PHOTOSYNTHESIS

​THE PROCESS BY WHICH LEAVES PREPARE FOOD USING WATER FROM THE SOIL AND CARBONDIOXIDE FROM AIR IN THE PRESENCE OF SUNLIGHT AND CHLOROPHYLL IS CALLED PHOTOSYNTHESIS

​DURING PHOTOSYNTHESIS,FOOD IS PREPARED IN THE FORM OF SUGAR WHILE OXYGEN IS GIVEN OUT BY LEAVES.

​PHOTO=LIGHT//SYNTHESIS=TO PREPARE

​LEAF -THE FOOD FACTORY

​WHAT HAPPEN TO FOOD PREAPARED BY PLANTS

​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

​LEAVES CONTAINS STARCH

​FUN TIME