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Excretory Products and their Elimination

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Advanced Zoology

Animal Kingdom
Structural Organisation in Animals
Digestion and Absorption
Breathing and Exchange of Gases
Body Fluids and Circulation
Excretory Products and their Elimination
Locomotion and Movement
Neural Control and Coordination
Chemical Coordination and Integration
Human Reproduction
Human Health and Disease
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  1. In Ornithine cycle, which one pair of the following wastes are removed from the blood?
    1. CO2 and urea
    2. CO2 and ammonia
    3. Ammonia and urea
    4. Urea and sodium salts
Correct Option: B

In ureotelic animals urea is formed from ammonia by Ornithine cycle.
CO2 + 2NH3 → CO(NH2)2 + H2O
ammonia Urea


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