parts of the plant
Post on 23-Feb-2016
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Parts of the Plant
ROOTS
Parts of the Plant: Roots
Functions of Roots
• 1. anchor the plant and hold it upright.
• 2. absorb moisture and minerals from the soil and conduct them to the stem.
• 3.Storage of plant food.
Functions of Roots continued
• In some plants, but not all plants...
• 4. propagate or reproduce the plant
• 5. can be used for food: vegetables: carrots, beets,
The Anatomy of a Root
• Root cap – covers the tip of the root and protects it as it pushes through the soil.
• New cells are produced under the root cap by meristem tissue through mitosis.
• This addition of cells is how a root grows.
• Root hairs – are the actual point of moisture absorption.
• The root system of a typical tree develops a root system that extends in all directions as far as the tree is tall or more...
Types of Root Systems
• Plants generally conform to one of two types of roots systems:
• Tap Root System
• Fibrous Root System
Types of Roots • Fibrous- located near soil surface. Made up of
many tiny roots with short branches.
• Fibrous rooted plants - are the easiest type of plants to transplant.
• The many “tiny” roots all have root hairs (are the actual point of moisture absorption)
• Makes it easier for the plant to recover from root loss.
• Most monocots have fibrous root systems.
Types of Roots
• Tap Root- one main root, below the soil surface, several others branching out to the sides.
Types of Roots
• Aerial Roots- develop from the stem and project downward into the soil. Help to support a plant.
• Called 'aerial roots' because they begin above ground
• Found on corn, banyun, weeping fig, sugar cane
Examples of Aerial Roots
2
• Adventitious Tissue - not actually roots. Function to support plants onto other surfaces.
• Have the potential for becoming roots.• Generally develop from underneath leaves at
the nodes.
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