Diversity in the Plant World
http://www.uky.edu/Projects/SeedBiology/images/corn.jpg
http://entomology.wisc.edu/~cullen/research/Soybean-
Aphid_Hayes.jpg
http://cropandsoil.oregonstate.edu/crops/seeds/ogscr/sowhwh/head.jpg
Tap Root Systems
• CHARACTERISTICS:
• 1 Main root
• Small roots develop from main root
• ex: Carrot
http://www.greencastle.k12.in.us/HS/Botany/root_structure_files/slide0014_image028.jpg
Fibrous Root Systems
• CHARACTERISTICS:
• Numerous slender roots
• Shallow root system
• Ex: grass
http://www.cactus-art.biz/note-book/Dictionary/aaa_Dictionary_pictures/Fibrous_root_system.jpg
Root Functions
• Absorb water and nutrients from the soil
• Anchor the plant to allow upright growth
• Store food that is processed in the leaves
Plants and Animals, Biology and Production Lee/Biondo/Hutter/Westrom/Patrick
Root Structure
• Root Hairs• Primary Root• Root Cap• Zone of Elongation
http://www.cactus-art.biz/note-book/Dictionary/aaa_Dictionary_pictures/Fibrous_root_system.jpg
Root Structures and Functions
• Root Hairs: increase water and mineral absorbance by the plant
• Primary Root: the initial root that anchors the seedling
• Root Cap: protects the root as it pushes through the soil
• Zone of Elongation: region of new root growth
Plants and Animals, Biology and Production Lee/Biondo/Hutter/Westrom/Patrick
Leaf Structure
• Epidermis
• Stoma
• Guard Cells
http://www.bbc.co.uk/scotland/education/bitesize/standard/img/biology/leaf_structure_al.gif
Leaf Structure and Function
• Epidermis: skin-like protective layer of cells
• Stoma: openings in the leaf that allow exchange of: oxygen, carbon dioxide,& water vapor
• Guard Cells: control the opening and closing of the stoma
Plants and Animals, Biology and Production Lee/Biondo/Hutter/Westrom/Patrick
Flower Structure
• Sepal• Petal• Stamen• Pistil• Ovary
http://extension.oregonstate.edu/mg/botany/images/fig19.gif
Flower Structure and Function
• Sepal: protects the flower before it opens
• Petal: brightly colored to attract pollinators
• Stamen: male reproductive part of the flower
• Pistil: female reproductive part of the flower
• Ovary: contains eggs and is the site of seed development
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