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The EXTERNAL Structure of. PLANTS. 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. AXILLARY BUD. TERMINAL BUD. FLOWER. FRUIT. NODE. SHOOT SYSTEM. NODE. INTER- NODE.
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The EXTERNAL Structure of PLANTS
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
AXILLARY BUD TERMINAL BUD FLOWER FRUIT NODE SHOOT SYSTEM NODE INTER- NODE NODE LEAF STEM LATERAL OR SIDE ROOT ROOT SYSTEM MAIN ROOT
The Shoot System is found ground and the Root System is found ground. ABOVE BELOW or UNDER
Types of Root System Looks like a tangled mass of roots • Examples of plants • With this root • system are • Banana • Coconut • Rice • Corn • Sugar Cane All Grasses
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
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
Specialized Roots STILT ROOTS e.g. Mangrove
PROP ROOTS e.g. Corn
ADVENTITIOUS Roots - Grow from unusual places on plants such as - Stems, leaves and even fruits
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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