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The EXTERNAL Structure
of PLANTS
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External Structure of the Plant – Parts of the plant on the outside.
The Root Types of Root Systems Functions of the Root System Specialized Root Systems
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AXILLARY BUD TERMINAL BUD FLOWER FRUIT NODE SHOOT SYSTEM NODE INTER- NODE NODE LEAF STEM LATERAL OR SIDE ROOT ROOT SYSTEM MAIN ROOT
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ground and the Root System
The Shoot System is found ground and the Root System is found ground. ABOVE BELOW or UNDER
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Types of Root System All Grasses Looks like a tangled mass of roots
Examples of plants With this root system are Banana Coconut Rice Corn Sugar Cane All Grasses
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Tap Roots Have a large main central root Have many branching roots
Go deep in the soil Examples of plants : Large trees e.g. mango, avocado Shrubs e.g. tomato, peppers
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Aerial Roots Plant attaches itself to tree branch or telephone wire
Roots hang down in mid-air and absorb water from rainfall Examples : Wild Pine Some Orchids
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Specialized Roots STILT ROOTS e.g. Mangrove
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PROP ROOTS e.g. Corn
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ADVENTITIOUS Roots - Grow from unusual places on plants such as - Stems, leaves and even fruits
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Functions of Roots Roots : - anchor plants firmly in the ground
- absorb water and minerals from the soil - of some plants, can store starch - of some plants can be used to grow a new plant
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