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Plant Science Agscience I Stalder. Human Needs Direct Plant Source: plants or products used by humans Indirect Plant Source: Plants used as animal feed.

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Presentation on theme: "Plant Science Agscience I Stalder. Human Needs Direct Plant Source: plants or products used by humans Indirect Plant Source: Plants used as animal feed."— Presentation transcript:

1 Plant Science Agscience I Stalder

2 Human Needs Direct Plant Source: plants or products used by humans Indirect Plant Source: Plants used as animal feed and humans use the animals or its products Meeting Basic Needs –Food –Clothing –Shelter

3 Role of Plant Science Field Crops –Agronomy Horticulture Crops –Ornamental Horticulture Floriculture – plants for foliage (flowers) Landscape Horticulture – outdoor environment –Food Crop Horticulture Olericulture - vegetables Pomology - fruits Forestry

4 Important Plants & Uses Grain Crops –Wheat, oats, barley, rye, rice corn Sugar & Oil Crops –Sugar cane, sugar beet –Soybean, cotton, canola, corn Fiber Crops –Cotton, flax, hemp, jute

5 Important Plants & Uses Vegetable, Fruit & Nut Forage –Use leaves and stems for animal use –Hay, grasses, legumes Ornamental –Turf, flowers, shrubs, vines Other –Herbs – non-woody plant used to enhance food – spices – an aromatic plant part –medicinal plants – pain killers, oitments

6 The Plant Kingdom Four major groups: –Mosses –Ferns –Gymnosperm “naked seeds” seeds lay on the scales of cones –Angiosperms Flowering plants Seed is enclosed in the fruit

7 Flowering Plants Two Classes –Monocots Lilies, grasses, corn and palms –Dicots Oaks, cacti, roses and soybeans

8 Flowering Plants MonocotsDicots Leaves Long, narrow blades, parallel veins Broad to narrow leaves with netted veins Flowers Parts in multiples of three Parts in multiples of four or five Stems Vascular bundles scattered Vascular bundles arranged in circle Seedlings One seed leafTwo seed leaves

9 Plant Life Cycles Life Cycle –Time when a plant begins growth until the time it dies.

10 Plant Life Cycles 3 groups –Annuals Complete their life cycle within one year. Must replant every year. Corn, soybeans, marigolds, ragweed, zinnias

11 Plant Life Cycles Biennials –Normally require 2 growing seasons to produce flowers and fruit before dying –Hollyhock, parsley, beets, carrots

12 Plant Life Cycles Perennials –Plants that have a life cycle of more than 2 years. –Produce seeds every year for many years. –2 types Herbaceous – soft shoots that are killed by frost –Daylilies, tulips, asparagus Woody – wood and buds above ground that survive winter –Maple, honeysuckle, grape

13 Plant Parts Stem Leaves Roots Flowers

14 Stem Vascular Tissue –Xylem = transports water & nutrients from roots –Phloem = transport food produced by leaves Buds –Terminal = end of the stem –Lateral = on the side of the stem

15 Leaves Petiole = stem of a leaf –Simple = petiole + 1 leaf –Compound = numerous petioles and/or leaflets

16 Roots Tap –Single, large root, grows straight down Fibrous –Many small roots that grow underground Adventitious –Do not need to be underground, help plant to climb

17 Flower Look on pg 299 for flower diagram –Record all parts of the flower –Identify if they are male, female or both –Identify its job


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