WAEC Biology 2020 Objective — Question 17
Question 17 of 50 from the West African Examinations Council (WAEC) Biology 2020 Objective paper, with the correct answer and a full explanation.
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The properties of endocrine system include the following except
- A. secretion of hormone
- B. transportation by blood to target organs
- C. having specific effect
- D. release of secretions into ductCorrect
Explanation
Endocrine glands are ductless glands; they do not release their secretions into ducts (that is a property of exocrine glands). Their hormones are secreted directly into the bloodstream to target organs.
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