Biology

6th

grade

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Excretory System

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  • 1. Multiple Choice
    30 seconds
    1 pt
    What is the main function of the excretory system?
    to collect and remove wastes from the body
    to strengthen skeletal muscles
    to protect the nervous system
    to bring oxygen to body cells
  • 2. Multiple Choice
    30 seconds
    1 pt
    Which organ of the excretory system stores urine until the body is ready to eliminate it?
    ureters
    urethra
    urinary bladder
    urea
  • 3. Multiple Choice
    30 seconds
    1 pt
    Tiny filtering structures where urine is produced in the kidneys are called
    ureters.
    alveoli.
    nephrons.
    bronchi.
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