Define a plant hormone. Compare plant hormones to human hormones according to their definition. List the functions and characteristics of hormones, their chemistry and attachment to target cell receptors. Discuss how hormones affect growth, metabolic activity, and cell/tissue development. Describe how receptors must be specific for hormones, chemically they must "fit" together in order for a reaction to occur. Begin plant hormones by discussing auxins, the first plant hormones discovered. Discuss that they function as growth stimulants.
From a diagram , discuss the structure and function of the blade, petiole, veins, venues, and cuticle. Examine a diagram of the internal cell structure of the cell. View and discuss the upper and lower epidermal cells, the palisade layer, the spongy layer, the vascular bundle, the tomato and the guard cells Discuss the function of each.
Lab which examines a plant seed. Dicot liana bean seeds were used, some were soaked in water prior. The external parts were named along with the embryo and internal part of the seed.
Finish the anatomy and functions of the root system, and view images of the various types of roots. Outline the main functions of the stem, and outline the various types of stems from herbaceous to woody. Discuss the apical growth upward by the stem apical meristem and the growth downward by the root apical meristem. View cross sectional diagrams of the stem and discuss the epidermis, vascular bundles, cortex, pith and cambium layer.
Using a diagram of a typical root, discuss the structure and function of each layer of tissue and cells. Start from the root cap and work up to the epidermal covering. Discuss the general function of roots which involves absorption of water and minerals, along with transport of these to the vascular tissue in the root. Discuss why each root may be different depending on the habitat.
Define root structure and function. Discuss uptake of water and dissolved minerals and the anchoring of the plant to soil and other objects.
describe how some roots grow downward as much as 50 m. View and discuss the root structure and growth using images and photos. Define types of roots and adaptations. Introduce types of stems
Define, discuss and view images of Meristematic, Dermal, Vascular, and Ground tissue. Discuss each with regard to location and main functions in a plant. Stress meristematic involved in growth of roots and stems. Epidermis involved with outer covering and production of the cuticle. Vascular involving the xylem and phloem concerned with movement of water and nutrients throughout the plant.
Ground tissue used for storage of sugars and starch.
Discuss the 3 categories of plant cells, Parenchyma, Collenchyma, and Sollenchyma. For each type, describe the main characteristics, shapes and functions and plant locations. View diagrams and images of each type.
Complete the diversity of seedless non vascular plants. Introduce seeded vascular plants, the most widely distributed plants on Earth. View and define a seed. Discuss the cotyledon, angeosperms and glymnosperms. Define and discuss the biology of a fruit. Discuss the adaptations which have allowed seeds to become important.
Discuss physiology of the seed parts.
View and discuss images and photos of non vascular plants. Determine why they are small and most grow in moist regions. Determine that they have evolved from a common ancestor. Discuss and view some of the organisms. Discuss the Bryophytes, Anthocerophq, and Herpaticophytes. Discuss the major characteristics of each division, . Introduce the seedless vascular plants. View a strobilus phots, present a variety of characteristics and begin to discuss the Lycophytes.
