Louisiana Horticulture Test Study Guide, Exams of Agricultural economics

Download Louisiana Horticulture Test Study Guide and more Exams Agricultural economics in PDF only on Docsity! Louisiana Horticulture Test Study Guide Exam- with 100% verified solutions Tutor verified   What is the difference between a cultivar and variety? Cultivar- A plant or grouping of plants selected for desirable characteristics that can be maintained by propagation Variety- A naturally occurring subgroup of a species which has some distinguishing characters Who is Linnaeus? What system of naming plants did he create? Linnaeus is a Swedish Botanist who developed the Binomial System of Nomenclature(Genus + Species) Why is it important to know common and scientific names of plants? So that you can communicate with others without confusion about the identity of a plant What are some origins of botanical names? Country of origin, Names of Explorers, and Descriptive Latin Terms What are some typical groupings for plants when they are classified by growth characteristics? Life Span, Leaf Retention, Growth Habits, Light, Size List the functions of a root system. Absorption, Anchorage, Conduction, Storage What are two kinds of root systems? Fibrous and Taproot List the functions of the stem of a plant. Support; Conduction; Storage Define xylem and phloem. xylem- the transport vessel for water and minerals from root to leaf phloem- the transport vessel for manufactured food from leaf to stem What is the difference between monocots and dicots? monocots- plants that have a single seed leaf(corn; grass; lilly) dicots- plants that have two seed leaves(trees; shrubs; annuals) What are nodes and internodes? nodes- the area on stems where leaves emerge internodes- the area on stems in between where leaves emerge List the types of specialized stems and roots commonly found in plants. Bulbs; Corms; Rhizomes; Tubers; Tuberous Roots What are the two main functions of leaves? Photosynthesis and Transpiration Define angiosperms and gymnosperms. Angiosperms- plants that bloom and develop fruit which encloses the seed 2. Convention 3. Radiation Define soil texture. determined by the relative proportion of its mineral particles and is classified as sand, silt, and clay Define soil structure. the way various particles are arranged determine soil structures(sandy or clay soils) Soils can be classified as ________ or ________. fine or coarse ________ is commonly added to acid soils to raise pH. Lime ________ is commonly added to alkaline soils to lower pH. Sulpher Most ornamental plants prefer a soil pH of ________. 5.5 - 7.0 Acid loving ornamental plants prefer a soil pH of _________. 5.0 - 5.5 True or False. Nutrient availability is regulated by soil. True List the four physiological changes in the reproductive phase of sexual propagation. 1. Cone Bud Induction 2. Flower and Bud Initiation and Development 3. Flower 4. Fruit and Seed Production What is the main disadvantage of sexual propagation? Produces offspring that are not uniform What are the two most critical environmental requirements pertaining to seed germination? Water and Temperature Vegetative propagation is also referred to as ____________ propagation. Asexual List some examples of ways to vegetatively propagate a plant. Layering; division; separation Strawberry runners are commonly propagated by ________. Layering Define grafting. What steps should be followed when accepting an order at a retail garden center? 1. Check the order to be correct 2. Inspect the product to be healthy 3. Examine for pests What are three indicators of a plant needing irrigation. 1. Root ball is not wet 2. Media has shrunk away from the pot 3. Weight of the pot is light and foliage is wilted Why is cold damage common on container-growth ornamental plants at temperatures of 20-25 degrees. Because these plants are grown above ground where the root systems are not insulated