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Plant Parts and Their Functions agriscience msu edu by MikeJenny

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									Plant Parts and Their
      Functions
       Joel Berry
    Topic # 2014 A/B
         Diversity in the Plant World


http://www.uky.edu/Projects/SeedBiol
         ogy/images/corn.jpg


                                                                                                   http://entomology.wisc.edu/~cullen
                                                                                                           /research/Soybean-
                                                                                                             Aphid_Hayes.jpg




                                       http://cropandsoil.oregonstate.edu/crops/seeds/ogscr/sowh
                                                               wh/head.jpg
          •Key Focus Points
•   Structures of a plant
•   Root
•   Leaf
•   Flower
•   Functions of those structures
                    Tap Root Systems
                                                       • CHARACTERISTICS:

                                                       • 1 Main root

                                                       • Small roots develop
                                                         from main root

                                                       • ex: Carrot

http://www.greencastle.k12.in.us/HS/Botany/root_stru
         cture_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_syst
                          em.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.j
                             pg
       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/bio
                    logy/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
                Conclusion
•   Quiz hints
•   Focus on:
•   Functions of each part of a plant
•   Be able to label the structure of a plant

								
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