29LeavesLeaves are the food factory of the plant producing all food that is used by the plant and stored for later use by the plant or by an animal.Leaves vary in shape and size; with most of them being flatThe arrangement of the leaves differ alternate, opposite, whorled,
30External Leaf Structures The petiole is the stalk that attaches the leaf to the stemThe blade which is the flat part of the leafThe midrib which is the large center vein from which all veins extendThe margins which are the edges of the leaf
31Internal Leaf Structures The skin of the leaf is called the epidermis which is a single layer of cells. The epidermis provides protection from water loss.The guard cells open and close a small space or pore on the underside of the leaf called the stomaThe stoma allows the plant to transpire. This gives off moisture and exchange of gases.
32In the inner part of the leaf are the chloroplast In the inner part of the leaf are the chloroplast. The chloroplast are filled with chlorophyll which give the leaf it’s green color.With the use of chlorophyll , minerals, sugars sunlight and carbon dioxide the plant goes through photosynthesis
33The formula for photosynthesis is the following: 6CO2 + 6 H2O Kcals (light energy) = C6H12O6 (Glucose) + O2
34FlowerThe purpose of the flower is the reproduction of the plant. This can be done through fruits and seed.The reason flowers are colorful is to attract insects for pollination
35Parts of the FlowerThe sepals are the green leaflike part of the flower located at the base and are used to protect the flower bud.The petals are actually leaves and are the most striking part of the flowerThe stamen makes up the male reproductive part of the plant. This includes the anther which holds the pollen. The filament is the slender stalk that holds the anther
36The pistil is the female reproductive part of the flower The pistil is the female reproductive part of the flower. This includes the stigma which is sticky and catches the pollen, the style which is a long tube that carries to the ovary, the ovary is where the egg is produced.
37A complete flower has both male and female parts An incomplete flower contains only one of the parts