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VacuolesBy Hannah Rogers, Emily Urbanovitch, and Elizabeth Wood
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Central Vacuole: Structure• The prominent organelle
in older plant cells
• Largest organelle in the cell surrounded by membrane
• Solution inside (cell sap) is the plant cell’s main repository of inorganic ions
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Central Vacuole: Function
• Storage• Breakdown of
waste products• Hydrolysis of
macromolecules• Maintain pressure
for support of growing cells
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Other Information:
• Enable plants to grow with minimal investment in new cytoplasm
• Develops from the combination of smaller vacuoles
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Contractile Vacuole: Structure
• Enveloped in membrane
• Video
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Contractile Vacuole: Function
• Pump excess water out of the cell
• In plants:
• Some hold reserves of important organic compounds
• Protect against herbivores
• Contain pigments which attract pollenating insects to petals
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Other Information:
• Important in maintaining hydrostatic equilibrium
• Found in unicellular organisms
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Food Vacuole: Structure• Enveloped in
membrane• Formed by
phagocytosis
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Food Vacuole: Function
• Digestive function
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Which vacuole is involved in the breakdown of waste products?
Food Vacuole
Central Vacuole
Contractile Vacuole
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Which vacuole is enveloped in the membrane?
Food Vacuole
Central Vacuole
Contractile Vacuole
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Which vacuole protects against herbivores?
Food Vacuole
Central Vacuole
Contractile Vacuole
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Fantastic!
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NO