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Plant Science Agscience I Stalder.

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Presentation on theme: "Plant Science Agscience I Stalder."— 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 Horticulture Crops Forestry Agronomy
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 Dicots
Lilies, grasses, corn and palms Dicots Oaks, cacti, roses and soybeans

8 Flowering Plants Monocots Dicots Leaves Flowers Stems Seedlings
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 leaf Two 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 Buds
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 Fibrous Adventitious Single, large root, grows straight down
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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