The correct answer is Option (3) → Thyroid gland
- The excretory system removes metabolic wastes from the body and includes:
- Kidneys – filter blood and produce urine
- Ureters – carry urine from kidneys to bladder
- Urinary bladder – stores urine
- Urethra – carries urine out of the body
- Thyroid gland is an endocrine gland, not part of the excretory system.
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