Science 6 Unit 3 Lesson 6 What are plants like?

Start- Up Question: What is the purpose of flowers and why do they come in so many different sizes and shapes? Question: What is the purpose of flowers and why do they come in so many different sizes and shapes? Objectives Objectives Identify the characteristics that plants have in common Identify the basic structures and systems of a plant Describe the function of major plant structures Identify the major groups of plants

Characteristics of plants Plants have stiff outer coverings called cell walls Plants have stiff outer coverings called cell walls Contain a green pigment called chlorophyll Contain a green pigment called chlorophyll Plants have structure for making food, getting water, reproducing, and providing support Plants have structure for making food, getting water, reproducing, and providing support

Plant Systems Plants systems work like the systems in the human body Plants systems work like the systems in the human body 3 major systems are identified in your text 3 major systems are identified in your text

1. Root System Includes all parts of the roots Includes all parts of the roots A root collects water and dissolved minerals from the soild A root collects water and dissolved minerals from the soild They anchor the plant They anchor the plant They store unused food They store unused food

1. Root Systems Two types of root systems- Two types of root systems- Fibrous Fibrous Taproot Taproot Taproot system Taproot system One main root that grows downward One main root that grows downward Fibrous Fibrous Made of several roots that spread out form the root’s base Made of several roots that spread out form the root’s base

2. Shoot system Made up of stems and leaves Made up of stems and leaves Can have different types of stems Can have different types of stems Herbacious- soft flexible stems Herbacious- soft flexible stems Woody- aka trunks Woody- aka trunks

2. Shoot system How do plants get their food from the roots? How do plants get their food from the roots? Vascular tissue-plant tissues that transport water, minerals, and dissolved nutrients Vascular tissue-plant tissues that transport water, minerals, and dissolved nutrients Xylem- vascular tissue that transports water and dissolved minerals from roots to leaves Xylem- vascular tissue that transports water and dissolved minerals from roots to leaves Phloem- vascular tissues that transport s food from leaves to other parts of the plant Phloem- vascular tissues that transport s food from leaves to other parts of the plant If a plant has vascular tissue, it is known as a vascular plant If a plant has vascular tissue, it is known as a vascular plant

2. Shoot system Non vascular plant- a plant that does not have vascular tissue Non vascular plant- a plant that does not have vascular tissue They must transport water without plumbing They must transport water without plumbing They do not get very big They do not get very big Examples: moss and liverworts Examples: moss and liverworts

3. Reproduction Nonvascular plants Nonvascular plants Use spores to reproduce Use spores to reproduce A spore is a reproductive cell that grows directly into the new organism A spore is a reproductive cell that grows directly into the new organism Carried by wind and water Carried by wind and water

3. Reproduction Vascular plants Vascular plants 2 categories 2 categories With seeds With seeds Cone bearing Cone bearing Pines, spruces Pines, spruces Flower bearing Flower bearing Maple tree, house plants, cacti Maple tree, house plants, cacti Without seeds Without seeds Ferris and horsetails (use spores) Ferris and horsetails (use spores)

Lets chart Reproduction! Let’s go to the board! Let’s go to the board!

What next Work on packet for the rest of class! Work on packet for the rest of class!