Unit 13A - Plant Systems On the following slides, the green sections are the most important Underlined words = vocabulary! Hyperlinks are shown in purple. Background Image o The Texas Bluebonnet (Lupinus texensis) is our state flower and a plant native to Texas. o Remember that plants are NOT dead, but very much alive and composed of eukaryotic cells! o In this unit we will discuss the systems in plants, specifically transport, reproduction, and response. Introduction Image o Plants have cell differentiation (different cell types perform specific functions). o EX Root cells, stem cells, and flower petal cells all have specific functions (jobs) that they carry out for the plant. o AKA Cell Specialization Cell DifferentiationDifferentiationPlant.png o Pick up one sheet of colored paper and the foldable direction sheet. Setting Up the FoldableOcypJ_SmoLo/Tjgu979aWiI/AAAAAAAAAkw/SUBn76m3xgs/s1600/classr oom%2Bideas%2B001.JPG o Step 1 - Glue in the Root diagram! o Roots are specialized underground organs that absorb water and minerals necessary for the plant and anchor [hold] the plant in the soil and help to prevent soil erosion. o tap root (ex: carrot) single large central root o fibrous root (ex: grasses) clump of short threadlike divisions Absorption via Roots o Stems are specialized tissues that support leaves to hold them up to sun, and transport water, sugars, and nutrients through the plant. o Some stems are also modified for glucose [sugar] storage areas. o Video Video Transportion via Stems o Just like in animals, vascular tissues transport materials for plants. o Xylem transports H 2 0 (L sound for liquid) via hydrogen bonding in stacked cells to form straw-like drinking tubes; movement is up from roots to leaves o Phloem transports glucose; movement can be up and down Transport Cont.AAF0/BmCafNOYe6A/s400/xylem1%5B1%5D.gif o Step 1 - Glue in the stoma diagram! o Leaves are the tissues where most photosynthesis, and transpiration [evaporation from plants] occurs. o Veins run through the leaves, transport water, glucose, minerals, etc. to the plant cells Photosynthesis via Leaves o Stomata are openings in leaf tissue, much like the pores in our skin, used for gas exchange. o Guard cells control the opening and closing of stoma; the cells surround the opening contain numerous mitochondria for energy conversion Photosynthesis Cont.rviews/stoma_diagram.gif muenchen.de/plant/static/images/blumeninschwabenArabidopsisTha liana.jpg Stomata in Arabidopsis thaliana. Image o Step 1 - Glue in the flower diagram! o Flowers are a reproductive organ (not all plants have flowers) with male and female parts. o pollination transporting pollen (male sperm) to female part (ovule) o fertilization union of sperm with egg (creates a development of a plant embryo [seed] which grows into a mature plant). Reproduction via Flowers o Male o Stamen consist of the anther (produces pollen) and filament (supports anther) o Pollen contains sperm o Female o Pistil consists of the stigma, (where pollen lands), style, (connects stigma to ovary), and the ovule (develops into the fruit) o Ovule develops into an egg, eventually becomes the seed when fertilized o Non-sexual o Petals colored parts, attract pollinators (EX bees) o Sepals green parts, protect flower parts Flowers Cont. Flower Flower Cont. Flower o Step 1 - Glue in the fruit diagram in your physical notebook or embed in your digital notebook! o Fruits develop from a flowers female reproductive structure(s), and contain the seed(s) o provide a means to spread and disperse the seed(s) and/or as a food source [rich in nutrients] for the germinating seed. o EX fleshy fruit like strawberries, apples, tomato, o EX dry fruit AKA drupes like almonds Reproductive Tissues - Fruitkitchen/food/fruits/tropical-fruits_4.jpg o Seed Plants form seeds (a plant embryo surrounded by a food supply) in order to reproduce. o Seeds are encased in a protective covering called a seed coat. o Video Video Reproductive Tissues Seedsseeds/seed.gifes_rev/seed-pics.jpg