1. Parts of a Plant and Their Function

2. Plants Primary source of energy Carbon cycle
Sun -> grass -> deer -> humans
Carbon cycle
Take in carbon dioxide, produce glucose and oxygen
Keep us cool, wind breaks, holds soil in place, provide habitat, building materials, fuel

4. Parts of a Plant Four basic parts Leaves Stems Roots
Flowers (fruit/seeds)

5. Leaves “Food Factory” through photosynthesis
Vary in shape, size, and arrangement
Help identify plants
Simple, compound
Toothed, pointed, smooth
Lobed, ovate, lanceolate
Whorled, alternate, opposite

7. Parts of a leaf Petiole – leaf stalk Blade – flat part of the leaf
Midrib – large center vein
Veins – branch of the midrib and form network
Margins – edges of the plant leaves

9. Leaf is made of specialized cells Epidermis
Outer, protect the leaf from loss of moisture
Guard cells responsible for opening and closing stomata
All the plant to breathe
Center, food making
Chloroplast has chlorophyll
Photosynthesis
Process by which carbon dioxide and water in the presence of light are converted to sugar and oxygen

11. Food manufactured in leaf moves down through the stem to the roots
Used or stored in stem or root
Sometimes cells in roots, stems, and leaves
Respiration
Oxygen used to produce energy for cells
Too much water can affect efficiency