Plant Parts and Functions

Document Sample
Plant Parts and Functions Powered By Docstoc
					Plant Parts and Functions

By :

Alisa Kowalski Jessi Spry Alyson Wilson

Parts of The Plant

2 Types of Root Systems

Taproot System
Primary root grows down from the stem with some small secondary roots forming Examples: Carrots & Turnips

Fibrous System
Small lateral roots that spread out just below the soil’s surface
Examples: Corn & Beans

Parts of the Root
Outermost layer of cells

Tissue inside epidermis that stores starch and other substances necessary for the growth of the root

Parts of the Root
Root Cap
Provides protection for the root tip

Root Hairs
Site of absorption

Vascular Tissue
Within cortex, contains cells that transport water, nutrients, and minerals to all parts of the plant

Root Functions
Roots have 4 primary functions
1. Absorption of water and nutrients

(performed by root hairs) 2. Transportation of water and nutrients to stem 3. Anchor plant to maintain stability 4. Store food and water

Main body of leaf

Attaches blade to stem

Large central vein

Tip of leaf

Attaches to petiole, if petiole is absent attaches directly to stem

Edge of leaf

Responsible for gas and water exchange

Opening in epidermis where gas and water exchange

Middle layer of leaf where photosynthesis occurs

Important Functions of Leaves
Process that plants use to produce their food 6CO2 + 6H2OC6H1206 + 6 O2

Loss of water and exchange of carbon dioxide

Parts of the Stem
Areas where side branches and leaves develop from

Area between nodes

Small holes located in the stem (breathing pores)

Functions of the Stem
1. Transports water and nutrients from roots to leaves

2. Supports leaves, fruits and flowers

3. Food Storage

Fruit Classification
Develop from a single flower with many ovaries

Examples: Strawberries & Tulips

Fruit Classification
Fruit develops from a group of tightly clustered flowers

Examples: Pineapples & Figs

Fruit Classification
Develop from a single ovary

Examples: Cherries & Tomatoes

Fruit’s Function
Site of seed production

Flower Parts
Female part of plant Consists of:

•Style •Ovary

Flower Parts
Male reproductive organ Consists of: •Anther •Stamen

Flower Parts
Highly colored part of the flower, may contain perfume and/or nectar glands

Small green structures on the base of a flower that protect the flower bud

Flower Classification
Complete flower
Has all four male and female parts

Incomplete flower
Perfect flower

Missing one of the four male or female parts Has stamens and pistils Lacking either stamens or pistils

Imperfect flower

Flower Function
Sexual Reproduction is the flowers sole function

Pollination by:
Wind Insects and Birds

Parts of the Seed
Embryo Growing part of seed

Endosperm Tissue that provides nutrition for the developing seed

Cotyledon Food storage tissue

Parts of the Seed
Seedcoat Protective outer covering of the seed


Absorbs the endosperm

Shared By: