Plant Parts and Functions 7 th Grade Science

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Plant Parts and Functions 7 th Grade Science

Plant Parts and Functions 7 th Grade Science

Parts of The Plant • Roots • Leaves • Stem • Flower • Seed

Parts of The Plant • Roots • Leaves • Stem • Flower • Seed Image found at: www. webinstituteforteachers. org

Roots • 2 Types of Root Systems – Taproot – Fibrous System Image found

Roots • 2 Types of Root Systems – Taproot – Fibrous System Image found at: http: //www. puc. edu

Roots Taproot System Primary roots grow down from the stem with some secondary roots

Roots Taproot System Primary roots grow down from the stem with some secondary roots forming Image found at: http: //www. arboretum. fullerton. edu

Roots Fibrous Root System Small lateral roots that spread out just below the soil

Roots Fibrous Root System Small lateral roots that spread out just below the soil surface Image found at: www. wildmanstevebrill. com

Can you identify these root types?

Can you identify these root types?

Root Functions Roots have 4 primary functions • Absorption of water and nutrients –

Root Functions Roots have 4 primary functions • Absorption of water and nutrients – performed by root hairs • Transportation of water and nutrients to stem • Anchor plant to maintain stability • Store food and water

Parts of the Root • Root Cap – Provides protection for the root tip

Parts of the Root • Root Cap – Provides protection for the root tip • Root Hairs – Site of absorption Image found at: www. cactus-art. biz • Vascular Tissue – Within cortex, contains cells that transport water, nutrients, and minerals to all parts of the plant Image found at: www. bio. psu. edu

Important Functions of Leaves • Photosynthesis – Process that plants use to produce their

Important Functions of Leaves • Photosynthesis – Process that plants use to produce their food – 6 CO 2 + 6 H 2 O C 6 H 12 O 6 + 6 O 2 • Transpiration – Loss of water and exchange of carbon dioxide

Leaf Parts • Blade – Main body of leaf • Petiole – Attaches blade

Leaf Parts • Blade – Main body of leaf • Petiole – Attaches blade to stem • Midrib – Large central vein Image found at: www. yourdictionary. com

Functions of the Stem • Transport water and nutrients from roots to leaves •

Functions of the Stem • Transport water and nutrients from roots to leaves • Supports leaves, fruit, and flowers • Food storage Image found at: www. karencarr. com

Flower Function Sexual Reproduction!!!! • Flowers are pollinated by: – Wind – Insects –

Flower Function Sexual Reproduction!!!! • Flowers are pollinated by: – Wind – Insects – Birds

Flower Parts • Pistil – Female part of plant – Containing: • Stigma •

Flower Parts • Pistil – Female part of plant – Containing: • Stigma • Style • Ovary Image found at: www. howe. k 12. ok. us

Flower Parts • Stamen – Male reproductive part – Contains • Anther • Filament

Flower Parts • Stamen – Male reproductive part – Contains • Anther • Filament Image found at: www. botanyworld. com

Flower Parts • Petals – Highly colored part of the flower, may contain perfume

Flower Parts • Petals – Highly colored part of the flower, may contain perfume and/or nectar glands • Sepals – Small green structures on the base of a flower that protect the flower bud Image found at: http: //biology. clc. uc. edu

Parts of the Seed • Embryo – Growing part of seed containing: • Plumule

Parts of the Seed • Embryo – Growing part of seed containing: • Plumule – “Shoot” • Hypocotyl – Stem • Radical – “Root” • Endosperm – Tissue that provides nutrition for the developing seed • Cotyledon – Food Storage • Seed Coat – Protective outer covering of the seed

Parts of the Seed Image found at: www. puc. edu

Parts of the Seed Image found at: www. puc. edu

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