Importance of Plants Oxygen Foodfeed Medicine httpwwwyoutubecomwatchv6iEOTB1UjjQ Absorb Carbon Dioxide Decoration Aesthetic PLANT LIFE CYCLES Plant Life Cycle Annual Goes from seed to producing seed in one growing season ID: 462911
Download Presentation The PPT/PDF document "IMPORTANCE OF PLANTS" is the property of its rightful owner. Permission is granted to download and print the materials on this web site for personal, non-commercial use only, and to display it on your personal computer provided you do not modify the materials and that you retain all copyright notices contained in the materials. By downloading content from our website, you accept the terms of this agreement.
Slide1
IMPORTANCE OF PLANTSSlide2
Importance of Plants
Oxygen
Food/feedMedicinehttp://www.youtube.com/watch?v=6iEOTB1UjjQ Absorb Carbon DioxideDecoration (Aesthetic) Slide3
PLANT LIFE CYCLESSlide4
Plant Life Cycle
Annual
Goes from seed to producing seed in one growing seasonEx. Corn, beansSlide5
Summer Annuals
Summer annuals
germinate in the spring. Summer annuals produce leaves, flowers, and seed before dying during the summer or fall. Many crops and garden plants are annuals. Corn, soybeans, rice, wheat, potatoes, and tomatoes
Petunias, impatiens, marigolds, and zinnias
Ragweed, pigweed, lambsquarter, crabgrass
Photo, courtesy USDA Peggy GrebSlide6
Winter Annuals
The seed of a
winter annual germinates in the fall. The immature plant overwinters as a compact rosette. Once the plant has received a sufficient period of cold treatment, it bolts. Slide7
Winter Annuals
Bolting
is a process in which the stem of a plant rapidly elongates at the time of flowering. Flowers then develop, seeds are set, and the plant dies. Winter wheatSlide8
Plant Life Cycle
Biennial
Goes from seed to producing seed in two growing seasons1st year – vegetative growth
2
nd
year – vegetative and flower growth
Ex. Carrot, burdockSlide9
Biennials
Biennials
are plants that normally require two growing seasons to produce flowers and seed before dying.
First growing season: biennials grow vegetatively.
Next: plants go dormant and rest until the Spring
Winter: receive a required cold treatment
Growth is resumed in the spring of the 2
nd
season.
The plants bolt, flower, produce seed, and die.
Hollyhock, Sweet William, parsley, beets, and carrotsSlide10
Plant Life Cycle
Perennial
Lives more than two growing seasonsEx. Trees, shrubsSlide11
Perennials
A
perennial is a plant that has a life cycle of more than two growing seasons. May take perennial plants a few years to many years to reach reproductive maturity. Perennials may be woody like trees and shrubs or herbaceous.Slide12Slide13
On the flip chart(s) – create a Venn-Diagram to compare and contrast the three types of plant life cycles Slide14
MAJOR PLANT STRUCTURES Slide15
Major Plant Structures
Flower
Attracts insects for pollinationFruitSeed-carrying structureSlide16
Major Plant Structures
Seeds
Produces new plantsLeavesProduces food/sugarsSlide17
Major Plant Structures
Stem
Supports the plantTransports water, nutrients and food/sugarRootsAnchors plantAbsorbs water and nutrientsStores food