Excretion

In this topic

• What excretion is and why it matters
• Excretion in plants
• Excretion in single-celled animals and worms
• Excretion and breathing out

Key terms

• Excretion
• Contractile vacuole
• Protonephridia
• Flame cell
• Metanephridia
• Nephrostome
• Guttation
• Transpiration
• Leaf fall
• Resin
• Essential oil
• Homeostasis

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