Total number of endocrine glands / tissues? A. 10 B. 20 C. 30 D. 40 Right Answer: B. 20 Share : December 24, 2017 Hassan Ali Biology Total 0 Votes: 0 0 Tell us how can we improve this Mcqs? Captcha: + = Verify Human or Spambot ? Related Mcqs Check Below -After 25 years of age RBC’s are mostly produced in the bone narrow of all of the following bones except?The areas of the lungs in which gas exchange does not takes place is called?Classification of algae is largely based on their?