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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
Biotechnology Principles and Processes
Biomolecules (Zoology)
Evolution (Zoology)
Biotechnology and its Applications
Reproductive Health
  1. Nitrogenous waste products are eliminated mainly as
    1. urea in tadpole and ammonia in adult frog
    2. ammonia in tadpole and urea in adult frog
    3. urea in both tadpole and adult frog
    4. urea in tadpole and uric acid in adult frog
Correct Option: B

Ammonia molecules are small and highly soluble in water. In ammonotelic animals large amount of H2O is required to eliminate ammonia from the body, so it is found in aquatic animals like tadpole of frog. When tadpole becomes a mature frog it acquires mainly ureotelism.


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