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Download Plant Notes- Kingdom Plantae
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Plant NotesKingdom Plantae Characteristics of Plants • Multicellular ( many-celled) • Autotrophic ( make their own food) • Primary producers in most ecosystems and provide the nutritional basis in terrestrial ecosystems • Release oxygen to atmosphere • Do you remember the equation for Photosynthesis? Write it below. 6 CO2 + 6 H2O C6H12O6 + 6 O2 • Cell walls are composed of cellulose • Cannot move from place to place 4 Basic Kinds of Plants: • 1. Nonvascular Plants-Usually small and lack tissue to transport water and nutrients. They lack roots stems and leaves. Example: mosses. • 2. Seedless Vascular Plants-Have roots stems and leaves; reproduce with spores instead of seeds. Examples: Ferns • 3. Nonflowering Seed Plants (Gymnosperms)-vascular plants that reproduce using seeds but do not produce flowers-they produce seeds in a CONE. • Example: Pines and Spruces. • Usually have needle like leaves and live in cold dry (arid) environments. • Leaves falling to the ground make the soil very acidic and many plants cannot survive so there is not a lot of diversity. • What does acidic mean? • What does diversity mean? • 4. Flowering Seed Plants (Angiosperms)• Plants that produce flowers. Seeds are produced in a fruit. Examples: roses, grasses and oaks. 2 groups of Angiosperms: • Monocots• • • • • • one cotyledons(seed leaf) flower parts in 3’s leaves with parallel veins vascular tissue is scattered fibrous root systems. Examples: Grains (such as wheat, corn, rice and grasses) • 2. Dicots • • • • two cotyledons(seed leaf) flower parts in 2’s,4’s or 5’s leaves with branching veins vascular tissue is in circular bunches • tap root • Examples: Daisies, roses, apples, peaches, potatoes, tomatoes • A Flower contains the reproductive organs of the plant. Parts of a Flower and Their Functions • Sterile parts: (not used in reproduction) – Petals-usually colorful to attract pollinators – Sepals- often green and cover the bud of a flower and protects it as it develops. Female parts: • Pistil- includes all female parts; • located at the center of the flower – Stigma- sticky part on which pollen lands – Style-connects the stigma to the ovary – Ovary-contains ovules & develops into a fruit – Ovule- structure in which an egg develops and eventually become seeds Male parts: • Stamen-includes all male parts – Anther- produces pollen – Filamentssupports the anther Major Parts of A Plant • Major Structures of VASCULAR PLANTS include: • ROOTS, STEMS AND LEAVES. Roots • Take in nutrients from the ground • Anchor plants into the ground • Tap root- one central root with tiny roots branching off • Fibrous roots-highly branched made up of many roots that are the same size Fibrous root Tap Root Stems • Made up of several types of tissue • Supports the leaves and houses vascular tissue • Phloem-tissue that transports nutrients • Xylem- tissue that transports water Leaves • Site of food production –photosynthesis • Parts of leaf: • Cuticle- waxy covering on the leaf that prevents water loss • Stomata- pores on the leaf that prevent water loss (p503, 561) • Guard cells- border each stoma. • Stomata open and close as the guard cells change shape. Guard cells Stomata Stomata Opened Stomata Closed • Epidermis-outer layer of tissue • Mesophyll- packed with chloroplasts; where photosynthesis occurs • 2 Layers of mesophyll: • 1.Palisade layer-columnar cells that are right below the upper epidermis • 2. Spongy layer-loosely packed spherical cells between palisade and lower epidermis Upper epidermis Palisade Vascular tissue Spongy mesophyll Lower epidermis Guard cells Stomata Transpiration- loss of water from a plant (THROUGH THE STOMATA) cotyledon cotyledon 3’s 4’s or 5’s parallel netlike Scattered vascular tissue Vascular tissue in bundles Fibrous roots Tap root